Merge pull request #703 from cloud-erik/main

Formating of language string in example

.git-blame-ignore-revs

@@ -0,0 +1,2 @@
+# Formatting
+5f771b785130154ed47952635b7acef371ffe0ec

.gitattributes

@@ -1,3 +1,5 @@
+* text=auto eol=lf
+
 # Ignore all JavaScript files in a directory
 src/main/resources/static/pdfjs/* linguist-vendored
 src/main/resources/static/pdfjs/** linguist-vendored

.github/dependabot.yml

@@ -9,3 +9,7 @@ updates:
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
+  - package-ecosystem: "docker"
+    directory: "/" # Location of Dockerfile
+    schedule:
+      interval: "weekly"

.github/workflows/build.yml

@@ -0,0 +1,34 @@
+name: "Build repo"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+
+    - uses: gradle/gradle-build-action@v2.4.2
+      with:
+        gradle-version: 7.6
+        arguments: build --no-build-cache

.github/workflows/codeql.yml

@@ -1,55 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-
-name: "Build repo"
-
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ "main" ]
-  schedule:
-    - cron: '15 12 * * 1'
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    strategy:
-      fail-fast: false
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v3
-      
-    - name: Set up JDK 17
-      uses: actions/setup-java@v3
-      with:
-        java-version: '17'
-        distribution: 'temurin'
-
-   # - name: Initialize CodeQL
-   #   uses: github/codeql-action/init@v2
-   #   with:
-   #     languages: java
-
-    - uses: gradle/gradle-build-action@v2.4.2
-      with:
-        gradle-version: 7.6
-        arguments: assemble --no-build-cache
-
-    #- name: Perform CodeQL analysis
-    #  uses: github/codeql-action/analyze@v2

.github/workflows/licenses-update.yml

@@ -0,0 +1,48 @@
+name: License Report Workflow
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'build.gradle'
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  generate-license-report:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'adopt'
+
+      - name: Run Gradle Command
+        run: ./gradlew clean generateLicenseReport
+
+      - name: Move and Rename License File
+        run: |
+          mv build/reports/dependency-license/index.json src/main/resources/static/3rdPartyLicenses.json
+
+      - name: Check for Changes
+        id: git-check
+        run: |
+          git add src/main/resources/static/3rdPartyLicenses.json
+          git diff --staged --exit-code || echo "changes=true" >> $GITHUB_ENV
+
+      - name: Commit and Push Changes
+        if: env.changes == 'true'
+        run: |
+          git config --global user.name 'Stirling-PDF-Bot'
+          git config --global user.email 'Stirling-PDF-Bot@stirlingtools.com'
+          git commit -m "Update 3rd Party Licenses"
+          git push
+

.github/workflows/push-docker.yml

@@ -6,6 +6,9 @@ on:
     branches: 
       - master
       - main
+permissions:
+  contents: read
+  packages: write
 jobs:
   push:
     runs-on: ubuntu-latest

.github/workflows/releaseArtifacts.yml

@@ -3,7 +3,9 @@ name: Release Artifacts
 on: 
   release: 
     types: [created]
-
+permissions:
+  contents: write
+  packages: write
 jobs:
   push:
     runs-on: ubuntu-latest

.github/workflows/test.yml

@@ -0,0 +1,56 @@
+name: Docker Compose Tests
+
+on:
+  pull_request:
+    paths:
+      - 'src/**'
+      - '**.gradle'
+      - '!src/main/java/resources/messages*'
+      - 'exampleYmlFiles/**'
+      - 'Dockerfile'
+      - 'Dockerfile**'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout Repository
+      uses: actions/checkout@v2
+
+    - name: Set up Java 17
+      uses: actions/setup-java@v2
+      with:
+        java-version: '17'
+        distribution: 'adopt'
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - name: Run Docker Compose Tests
+      run: |
+        chmod +x ./gradlew
+        
+    - name: Get version number
+      id: versionNumber
+      run: echo "::set-output name=versionNumber::$(./gradlew printVersion --quiet | tail -1)"
+
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ steps.versionNumber.outputs.versionNumber }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Install Docker Compose
+      run: |
+        sudo curl -L "https://github.com/docker/compose/releases/download/v2.6.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
+        sudo chmod +x /usr/local/bin/docker-compose
+
+
+    - name: Run Docker Compose Tests
+      run: |
+        chmod +x ./test.sh
+        ./test.sh

CNAME

@@ -1 +0,0 @@
-stirlingtools.com

CONTRIBUTING.md

@@ -0,0 +1,40 @@
+# Contributing to Stirling-PDF
+
+Thank you for your interest in contributing to Stirling-PDF! There are many ways to contribute other than writing code. For example, reporting bugs, creating suggestions, and adding or modifying translations.
+
+## Issue Guidelines
+
+Issues can be used to report bugs, request features, or ask questions. If you have a question, you could also ask us in our [Discord](https://discord.gg/FJUSXUSYec).
+
+Before opening an issue, please check to make sure someone hasn't already opened an issue about it.
+
+## Pull Requests
+
+Before you start working on an issue, please comment on (or create) the issue and wait for it to be assigned to you. If someone has already been assigned but didn't have the time to work on it lately, please communicate with them and ask if they're still working on it. This is to avoid multiple people working on the same issue.
+
+Once you have been assigned an issue, you can start working on it. When you are ready to submit your changes, open a pull request.
+For a detailed pull request tutorial, see [this guide](https://www.digitalocean.com/community/tutorials/how-to-create-a-pull-request-on-github).
+
+Please make sure your Pull Request adheres to the following guidelines:
+
+- Use the PR template provided.
+- Keep your Pull Request title succinct, detailed and to the point.
+- Keep commits atomic. One commit should contain one change. If you want to make multiple changes, submit multiple Pull Requests.
+- Commits should be clear, concise and easy to understand.
+- References to the Issue number in the Pull Request and/or Commit message.
+
+## Translations
+
+If you would like to add or modify a translation, please see [How to add new languages to Stirling-PDF](HowToAddNewLanguage.md). Also, please create a Pull Request so others can use it!
+
+## Fixing Bugs or Adding a New Feature
+
+First, make sure you've read the section [Pull Requests](#pull-requests).
+
+To build from source, please follow this [Guide](LocalRunGuide.md).
+
+If, at any point of time, you have a question, please feel free to ask in the same issue thread or in our [Discord](https://discord.gg/FJUSXUSYec).
+
+## License
+
+By contributing to this project, you agree that your contributions will be licensed under the [GPL 3 License](LICENSE). You also acknowledge and agree that your contributions will be included in Stirling-PDF and that they can be relicensed in the future under the MPL 2.0 (Mozilla Public License Version 2.0) license.

DockerfileBase

@@ -6,7 +6,8 @@ FROM ubuntu:latest AS base
 # JDK for app
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
-    	openjdk-17-jre
+    	openjdk-17-jre && \
+    rm -rf /var/lib/apt/lists/*
     	
 # Doc conversion
 RUN apt-get update && \
@@ -18,7 +19,8 @@ RUN apt-get update && \
         libreoffice-impress \
 		python3-uno \
 		curl \
-		unoconv
+		unoconv && \
+    rm -rf /var/lib/apt/lists/*
 		
 		
 # OCR MY PDF (unpaper for descew and other advanced featues)
@@ -30,21 +32,12 @@ apt-get update && \
         python3-pip \
         ocrmypdf \
         unpaper && \
-    pip install --upgrade pip && \
+    rm -rf /var/lib/apt/lists/* && \
+    mv /usr/share/tesseract-ocr /usr/share/tesseract-ocr-original && \
+    pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir --upgrade ocrmypdf && \
     pip install --no-cache-dir --upgrade pillow==10.0.1 reportlab==3.6.13 wheel==0.38.1 setuptools==65.5.1 pyjwt==2.4.0 cryptography==39.0.1
     
     
 #CV and HTML   
 RUN pip install --no-cache-dir opencv-python-headless WeasyPrint 
-
-
-# cleanup and etc
-RUN rm -rf /var/lib/apt/lists/* && \
-    mkdir /usr/share/tesseract-ocr-original && \
-    cp -r /usr/share/tesseract-ocr/* /usr/share/tesseract-ocr-original && \
-    rm -rf /usr/share/tesseract-ocr
-
-
-
-    

FolderScanning.md

@@ -0,0 +1,41 @@
+## User Guide for Local Directory Scanning and File Processing
+
+### Whilst Pipelines are in alpha...
+You must enable this alpha functionality by setting
+```yaml
+system:
+  enableAlphaFunctionality: true
+```
+To true like in the above for your `/config/settings.yml` file, after restarting Stirling-PDF you should see both UI and folder scanning enabled.
+
+### Setting Up Watched Folders:
+- Create a folder where you want your files to be monitored. This is your 'watched folder'.
+- The default directory for this is `./pipeline/watchedFolders/`
+- Place any directories you want to be scanned into this folder, this folder should contain multiple folders each for their own tasks and pipelines.
+
+### Configuring Processing with JSON Files:
+- In each directory you want processed (e.g `./pipeline/watchedFolders/officePrinter`), include a JSON configuration file.
+- This JSON file should specify how you want the files in the directory to be handled (e.g., what operations to perform on them) which can be made, configured and downloaded from Stirling-PDF Pipeline interface.r
+
+### Automatic Scanning and Processing:
+- The system automatically checks the watched folder every minute for new directories and files to process.
+- When a directory with a valid JSON configuration file is found, it begins processing the files inside as per the configuration.
+
+### Processing Steps:
+- Files in each directory are processed according to the instructions in the JSON file.
+- This might involve file conversions, data filtering, renaming files, etc. If the output of a step is a zip, this zip will be automatically unzipped as it passes to next process.
+
+### Results and Output:
+- After processing, the results are saved in a specified output location. This could be a different folder or location as defined in the JSON file or the default location `./pipeline/finishedFolders/`.
+- Each processed file is named and organized according to the rules set in the JSON configuration.
+
+### Completion and Cleanup:
+- Once processing is complete, the original files in the watched folder's directory are removed.
+- You can find the processed files in the designated output location.
+
+### Error Handling:
+- If there's an error during processing, the system will not delete the original files, allowing you to check and retry if necessary.
+
+### User Interaction:
+- As a user, your main tasks are to set up the watched folders, place directories with files for processing, and create the corresponding JSON configuration files.
+- The system handles the rest, including scanning, processing, and outputting results.

HowToAddNewLanguage.md

@@ -1,4 +1,4 @@
-<p align="center"><img src="https://raw.githubusercontent.com/Frooodle/Stirling-PDF/main/docs/stirling.png" width="80" ><br><h1 align="center">Stirling-PDF</h1>
+<p align="center"><img src="https://raw.githubusercontent.com/Stirling-Tools/Stirling-PDF/main/docs/stirling.png" width="80" ><br><h1 align="center">Stirling-PDF</h1>
 </p>
 
 
@@ -8,15 +8,15 @@ Fork Stirling-PDF and make a new branch out of Main
 
 Then add reference to the language in the navbar by adding a new language entry to the dropdown
 
-https://github.com/Frooodle/Stirling-PDF/blob/main/src/main/resources/templates/fragments/languages.html
+https://github.com/Stirling-Tools/Stirling-PDF/blob/main/src/main/resources/templates/fragments/languages.html
 and add a flag svg file to 
-https://github.com/Frooodle/Stirling-PDF/tree/main/src/main/resources/static/images/flags
+https://github.com/Stirling-Tools/Stirling-PDF/tree/main/src/main/resources/static/images/flags
 Any SVG flags are fine, i got most of mine from [here](https://flagicons.lipis.dev/)
 If your language isnt represented by a flag just find whichever closely matches it, such as for Arabic i chose Saudi Arabia
 
 
 For example to add Polish you would add 
-```
+```html
 <a class="dropdown-item lang_dropdown-item" href="" data-language-code="pl_PL">
     <img src="images/flags/pl.svg" alt="icon" width="20" height="15"> Polski
 </a>
@@ -25,7 +25,7 @@ The data-language-code is the code used to reference the file in the next step.
 
 Start by copying the existing english property file 
 
-[https://github.com/Frooodle/Stirling-PDF/blob/main/src/main/resources/messages_en_GB.properties](https://github.com/Frooodle/Stirling-PDF/blob/main/src/main/resources/messages_en_GB.properties)
+[https://github.com/Stirling-Tools/Stirling-PDF/blob/main/src/main/resources/messages_en_GB.properties](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/src/main/resources/messages_en_GB.properties)
 
 Copy and rename it to messages_{your data-language-code here}.properties, in the polish example you would set the name to messages_pl_PL.properties
 

LocalRunGuide.md

@@ -109,7 +109,7 @@ pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint
 
 ```bash
 cd ~/.git &&\
-git clone https://github.com/Frooodle/Stirling-PDF.git &&\
+git clone https://github.com/Stirling-Tools/Stirling-PDF.git &&\
 cd Stirling-PDF &&\
 chmod +x ./gradlew &&\
 ./gradlew build

PipelineFeature.md

@@ -0,0 +1,42 @@
+# Pipeline Configuration and Usage Tutorial
+
+## Whilst Pipelines are in alpha...
+You must enable this alpha functionality by setting
+```yaml
+system:
+  enableAlphaFunctionality: true
+```
+To true like in the above for your `/config/settings.yml` file, after restarting Stirling-PDF you should see both UI and folder scanning enabled.
+
+
+## Steps to Configure and Use Your Pipeline
+
+1. **Access Configuration**
+   - Upon entering the screen, click on the **Configure** button.
+
+2. **Enter Pipeline Name**
+   - Provide a name for your pipeline in the designated field.
+
+3. **Select Operations**
+   - Choose the operations for your pipeline (e.g., **Split Pages**), then click **Add Operation**.
+
+4. **Configure Operation Settings**
+   - Input the necessary settings for each added operation. Settings are highlighted in yellow if customization is needed.
+
+5. **Add More Operations**
+   - You can add and adjust the order of multiple operations. Ensure each operation's settings are customized.
+
+6. **Save Settings**
+   - Click **Save Operation Settings** after customizing settings for each operation.
+
+7. **Validate Pipeline**
+   - Use the **Validation** button to check your pipeline. A green indicator signifies correct setup; a pop-out error indicates issues.
+
+8. **Download Pipeline Configuration**
+   - To use the configuration for folder scanning (or save it for future use and reupload it), you can also download a JSON file in this menu. You can also pre-load this for future use by placing it in ``/pipeline/defaultWebUIConfigs/``. It will then appear in the dropdown menu for all users to use.
+
+9. **Submit Files for Processing**
+   - If your pipeline is correctly set up close the configure menu, input the files and hit **Submit**.
+
+10. **Note on Web UI Limitations**
+    - The current web UI version does not support operations that require multiple different types of inputs, such as adding a separate image to a PDF.

README.md

@@ -1,14 +1,14 @@
-<p align="center"><img src="https://raw.githubusercontent.com/Frooodle/Stirling-PDF/main/docs/stirling.png" width="80" ><br><h1 align="center">Stirling-PDF</h1>
+<p align="center"><img src="https://raw.githubusercontent.com/Stirling-Tools/Stirling-PDF/main/docs/stirling.png" width="80" ><br><h1 align="center">Stirling-PDF</h1>
 </p>
 
 [![Docker Pulls](https://img.shields.io/docker/pulls/frooodle/s-pdf)](https://hub.docker.com/r/frooodle/s-pdf)
 [![Discord](https://img.shields.io/discord/1068636748814483718?label=Discord)](https://discord.gg/Cn8pWhQRxZ)
-[![Docker Image Version (tag latest semver)](https://img.shields.io/docker/v/frooodle/s-pdf/latest)](https://github.com/Frooodle/Stirling-PDF/)
+[![Docker Image Version (tag latest semver)](https://img.shields.io/docker/v/frooodle/s-pdf/latest)](https://github.com/Stirling-Tools/Stirling-PDF/)
-[![GitHub Repo stars](https://img.shields.io/github/stars/frooodle/stirling-pdf?style=social)](https://github.com/Frooodle/stirling-pdf)
+[![GitHub Repo stars](https://img.shields.io/github/stars/stirling-tools/stirling-pdf?style=social)](https://github.com/Stirling-Tools/stirling-pdf)
 [![Paypal Donate](https://img.shields.io/badge/Paypal%20Donate-yellow?style=flat&logo=paypal)](https://www.paypal.com/paypalme/froodleplex)
 [![Github Sponser](https://img.shields.io/badge/Github%20Sponsor-yellow?style=flat&logo=github)](https://github.com/sponsors/Frooodle)
 
-[![Deploy to DO](https://www.deploytodo.com/do-btn-blue.svg)](https://cloud.digitalocean.com/apps/new?repo=https://github.com/Frooodle/Stirling-PDF/tree/digitalOcean&refcode=c3210994b1af)
+[![Deploy to DO](https://www.deploytodo.com/do-btn-blue.svg)](https://cloud.digitalocean.com/apps/new?repo=https://github.com/Stirling-Tools/Stirling-PDF/tree/digitalOcean&refcode=c3210994b1af)
 
 This is a powerful locally hosted web based PDF manipulation tool using docker that allows you to perform various operations on PDF files, such as splitting merging, converting, reorganizing, adding images, rotating, compressing, and more. This locally hosted web application started as a 100% ChatGPT-made application and has evolved to include a wide range of features to handle all your PDF needs.
 
@@ -16,16 +16,14 @@ Stirling PDF makes no outbound calls for any record keeping or tracking.
 
 All files and PDFs exist either exclusively on the client side, reside in server memory only during task execution, or temporarily reside in a file solely for the execution of the task. Any file downloaded by the user will have been deleted from the server by that point.
 
-Please feel free to submit feature requests or report bugs either through GitHub issues or on our [Discord](https://discord.gg/Cn8pWhQRxZ)
-
 ![stirling-home](images/stirling-home.png)
 
 ## Features
 - Dark mode support.
-- Custom download options (see [here](https://github.com/Frooodle/Stirling-PDF/blob/main/images/settings.png) for example)
+- Custom download options (see [here](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/images/settings.png) for example)
 - Parallel file processing and downloads
 - API for integration with external scripts
-- Optional Login and Authentication support (see [here](https://github.com/Frooodle/Stirling-PDF/tree/main#login-authentication) for documentation)
+- Optional Login and Authentication support (see [here](https://github.com/Stirling-Tools/Stirling-PDF/tree/main#login-authentication) for documentation)
 
 
 ## **PDF Features**
@@ -80,36 +78,36 @@ Please feel free to submit feature requests or report bugs either through GitHub
 - Get all information on a PDF to view or export as JSON.
 
 
-For a overview of the tasks and the technology each uses please view [Endpoint-groups.md](https://github.com/Frooodle/Stirling-PDF/blob/main/Endpoint-groups.md)
+For a overview of the tasks and the technology each uses please view [Endpoint-groups.md](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/Endpoint-groups.md)
-Hosted instance/demo of the app can be seen [here](https://pdf.adminforge.de/) hosted by the team at adminforge.de
+Demo of the app is available [here](https://stirlingpdf.io). username: demo, password: demo
 
 ## Technologies used
 - Spring Boot + Thymeleaf
-- PDFBox
+- [PDFBox](https://github.com/apache/pdfbox/tree/trunk)
 - [LibreOffice](https://www.libreoffice.org/discover/libreoffice/) for advanced conversions
 - [OcrMyPdf](https://github.com/ocrmypdf/OCRmyPDF)
 - HTML, CSS, JavaScript
 - Docker
-- PDF.js
+- [PDF.js](https://github.com/mozilla/pdf.js)
-- PDF-LIB.js
+- [PDF-LIB.js](https://github.com/Hopding/pdf-lib)
 
 ## How to use
 
 ### Locally
-Please view https://github.com/Frooodle/Stirling-PDF/blob/main/LocalRunGuide.md
+Please view https://github.com/Stirling-Tools/Stirling-PDF/blob/main/LocalRunGuide.md
 
 ### Docker / Podman
 https://hub.docker.com/r/frooodle/s-pdf
 
 Stirling PDF has 3 different versions, a Full version, Lite, and ultra-Lite. Depending on the types of features you use you may want a smaller image to save on space.
-To see what the different versions offer please look at our [version mapping](https://github.com/Frooodle/Stirling-PDF/blob/main/Version-groups.md)
+To see what the different versions offer please look at our [version mapping](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/Version-groups.md)
 For people that don't mind about space optimization just use the latest tag.
 ![Docker Image Size (tag)](https://img.shields.io/docker/image-size/frooodle/s-pdf/latest?label=Stirling-PDF%20Full)
 ![Docker Image Size (tag)](https://img.shields.io/docker/image-size/frooodle/s-pdf/latest-lite?label=Stirling-PDF%20Lite)
 ![Docker Image Size (tag)](https://img.shields.io/docker/image-size/frooodle/s-pdf/latest-ultra-lite?label=Stirling-PDF%20Ultra-Lite)
 
 Docker Run
-```
+```bash
 docker run -d \
   -p 8080:8080 \
   -v /location/of/trainingData:/usr/share/tesseract-ocr/5/tessdata \
@@ -125,7 +123,7 @@ docker run -d \
   -v /location/of/customFiles:/customFiles \
 ```
 Docker Compose
-```
+```yaml
 version: '3.3'
 services:
   stirling-pdf:
@@ -144,17 +142,19 @@ services:
 Note: Podman is CLI-compatible with Docker, so simply replace "docker" with "podman".
 
 ## Enable OCR/Compression feature
-Please view https://github.com/Frooodle/Stirling-PDF/blob/main/HowToUseOCR.md
+Please view https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToUseOCR.md
 
-## Want to add your own language?
+## Supported Languages
-Stirling PDF currently supports 21!
+
+Stirling PDF currently supports 26!
 - English (English) (en_GB)
 - English (US) (en_US)
 - Arabic (العربية) (ar_AR)
 - German (Deutsch) (de_DE)
 - French (Français) (fr_FR)
 - Spanish (Español) (es_ES)
-- Chinese (简体中文) (zh_CN)
+- Simplified Chinese (简体中文) (zh_CN)
+- Traditional Chinese (繁體中文) (zh_TW)
 - Catalan (Català) (ca_CA)
 - Italian (Italiano) (it_IT)
 - Swedish (Svenska) (sv_SE)
@@ -170,16 +170,13 @@ Stirling PDF currently supports 21!
 - Turkish (Türkçe) (tr_TR)
 - Indonesia (Bahasa Indonesia) (id_ID)
 - Hindi (हिंदी) (hi_IN)
+- Hungarian (Magyar) (hu_HU)
+- Bulgarian (Български) (bg_BG)
+- Sebian Latin alphabet (Srpski) (sr-Latn-RS)
 
-If you want to add your own language to Stirling-PDF please refer
+## Contributing (creating issues, translations, fixing bugs, etc.)
-https://github.com/Frooodle/Stirling-PDF/blob/main/HowToAddNewLanguage.md
-
-And please create a PR to merge it back in so others can use it! 
-
-## How to View
-1. Open a web browser and navigate to `http://localhost:8080/`
-2. Use the application by following the instructions on the website.
 
+Please see our [Contributing Guide](CONTRIBUTING.md)!
 
 ## Customisation
 Stirling PDF allows easy customization of the app.
@@ -193,7 +190,7 @@ This file is located in the ``/configs`` directory and follows standard YAML for
 
 Environment variables are also supported and would override the settings file
 For example in the settings.yml you have
-```
+```yaml
 system:
   defaultLocale: 'en-US'
 ```
@@ -201,7 +198,7 @@ system:
 To have this via an environment variable you would have ``SYSTEM_DEFAULTLOCALE``
 
 The Current list of settings is
-```
+```yaml
 security:
   enableLogin: false # set to 'true' to enable login
   csrfDisabled: true
@@ -224,7 +221,7 @@ metrics:
   enabled: true # 'true' to enable Info APIs endpoints (view http://localhost:8080/swagger-ui/index.html#/API to learn more), 'false' to disable
 ```
 ### Extra notes
-- Endpoints. Currently, the endpoints ENDPOINTS_TO_REMOVE and GROUPS_TO_REMOVE can include comma separate lists of endpoints and groups to disable as example ENDPOINTS_TO_REMOVE=img-to-pdf,remove-pages would disable both image-to-pdf and remove pages, GROUPS_TO_REMOVE=LibreOffice Would disable all things that use LibreOffice. You can see a list of all endpoints and groups [here](https://github.com/Frooodle/Stirling-PDF/blob/main/Endpoint-groups.md) 
+- Endpoints. Currently, the endpoints ENDPOINTS_TO_REMOVE and GROUPS_TO_REMOVE can include comma separate lists of endpoints and groups to disable as example ENDPOINTS_TO_REMOVE=img-to-pdf,remove-pages would disable both image-to-pdf and remove pages, GROUPS_TO_REMOVE=LibreOffice Would disable all things that use LibreOffice. You can see a list of all endpoints and groups [here](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/Endpoint-groups.md)
 - customStaticFilePath. Customise static files such as the app logo by placing files in the /customFiles/static/ directory. An example of customising app logo is placing a /customFiles/static/favicon.svg to override current SVG. This can be used to change any images/icons/css/fonts/js etc in Stirling-PDF
 
 ### Environment only parameters
@@ -234,7 +231,7 @@ metrics:
 
 ## API
 For those wanting to use Stirling-PDFs backend API to link with their own custom scripting to edit PDFs you can view all existing API documentation
-[here](https://app.swaggerhub.com/apis-docs/Frooodle/Stirling-PDF/) or navigate to /swagger-ui/index.html of your stirling-pdf instance for your versions documentation (Or by following the API button in your settings of Stirling-PDF)
+[here](https://app.swaggerhub.com/apis-docs/Stirling-Tools/Stirling-PDF/) or navigate to /swagger-ui/index.html of your stirling-pdf instance for your versions documentation (Or by following the API button in your settings of Stirling-PDF)
 
 
 ## Login authentication

build.gradle

@@ -1,18 +1,28 @@
 plugins {
-	id 'java'
+    id 'java'
-	id 'org.springframework.boot' version '3.1.2'
+    id 'org.springframework.boot' version '3.2.1'
-	id 'io.spring.dependency-management' version '1.1.3'
+    id 'io.spring.dependency-management' version '1.1.3'
-	id 'org.springdoc.openapi-gradle-plugin' version '1.8.0'
+    id 'org.springdoc.openapi-gradle-plugin' version '1.8.0'
-	id "io.swagger.swaggerhub" version "1.3.2"
+    id "io.swagger.swaggerhub" version "1.3.2"
-	id 'edu.sc.seis.launch4j' version '3.0.5'
+    id 'edu.sc.seis.launch4j' version '3.0.5'
+    id 'com.diffplug.spotless' version '6.23.3'
+    id 'com.github.jk1.dependency-license-report' version '2.5'
 }
 
+import com.github.jk1.license.render.*
+
 group = 'stirling.software'
-version = '0.18.0'
+version = '0.20.1'
 sourceCompatibility = '17'
 
 repositories {
-	mavenCentral()
+    mavenCentral()
+}
+
+
+
+licenseReport {
+    renderers = [new JsonReportRenderer()]
 }
 
 sourceSets {
@@ -61,21 +71,37 @@ launch4j {
   messagesInstanceAlreadyExists="Stirling-PDF is already running."
 }
 
-dependencies {
+spotless {
-	//security updates
+    java {
-	implementation 'ch.qos.logback:logback-classic:1.4.14'
+        target project.fileTree('src/main/java')
-	implementation 'ch.qos.logback:logback-core:1.4.14'
-	implementation 'org.springframework:spring-webmvc:6.0.15'
 
-    implementation 'org.yaml:snakeyaml:2.1'
+        googleJavaFormat('1.19.1').aosp().reorderImports(false)
+
+        importOrder('java', 'javax', 'org', 'com', 'net', 'io')
+        toggleOffOn()
+        trimTrailingWhitespace()
+        indentWithSpaces()
+        endWithNewline()
+    }
+}
+
+dependencies {
+    //security updates
+    implementation 'ch.qos.logback:logback-classic:1.4.14'
+    implementation 'ch.qos.logback:logback-core:1.4.14'
+    implementation 'org.springframework:spring-webmvc:6.1.2'
+
+    implementation 'org.yaml:snakeyaml:2.2'
     implementation 'org.springframework.boot:spring-boot-starter-web:3.2.1'
     implementation 'org.springframework.boot:spring-boot-starter-thymeleaf:3.2.1'
 
     if (System.getenv('DOCKER_ENABLE_SECURITY') != 'false') {
         implementation 'org.springframework.boot:spring-boot-starter-security:3.2.1'
         implementation 'org.thymeleaf.extras:thymeleaf-extras-springsecurity5:3.1.2.RELEASE'
-        implementation "org.springframework.boot:spring-boot-starter-data-jpa"
+        implementation "org.springframework.boot:spring-boot-starter-data-jpa:3.2.1"
-        implementation "com.h2database:h2"
+        
+        //2.2.x requires rebuild of DB file.. need migration path
+        implementation "com.h2database:h2:2.1.214"
     }
 
     testImplementation 'org.springframework.boot:spring-boot-starter-test:3.2.1'
@@ -107,15 +133,15 @@ dependencies {
     //general PDF
 
     // https://mvnrepository.com/artifact/com.opencsv/opencsv
-    implementation ('com.opencsv:opencsv:5.7.1') {
+    implementation ('com.opencsv:opencsv:5.9') {
         exclude group: 'commons-logging', module: 'commons-logging'
     }
     
-    implementation ('org.apache.pdfbox:pdfbox:2.0.29'){
+    implementation ('org.apache.pdfbox:pdfbox:3.0.1'){
         exclude group: 'commons-logging', module: 'commons-logging'
     }
     
-    implementation ('org.apache.pdfbox:xmpbox:2.0.29'){
+    implementation ('org.apache.pdfbox:xmpbox:3.0.1'){
         exclude group: 'commons-logging', module: 'commons-logging'
     }
     
@@ -126,6 +152,7 @@ dependencies {
     implementation group: 'com.google.zxing', name: 'core', version: '3.5.2'
     // https://mvnrepository.com/artifact/org.commonmark/commonmark
     implementation 'org.commonmark:commonmark:0.21.0'
+    implementation 'org.commonmark:commonmark-ext-gfm-tables:0.21.0'
     // https://mvnrepository.com/artifact/com.github.vladimir-bukhtoyarov/bucket4j-core
     implementation 'com.github.vladimir-bukhtoyarov:bucket4j-core:7.6.0'
 
@@ -134,6 +161,12 @@ dependencies {
     annotationProcessor 'org.projectlombok:lombok:1.18.28'
 }
 
+tasks.withType(JavaCompile) {
+    dependsOn 'spotlessApply'
+}
+compileJava {
+    options.compilerArgs << '-parameters'
+}
 
 task writeVersion {
     def propsFile = file('src/main/resources/version.properties')
@@ -164,7 +197,7 @@ jar {
 }
 
 tasks.named('test') {
-	useJUnitPlatform()
+    useJUnitPlatform()
 }
 
 task printVersion {

chart/stirling-pdf/Chart.yaml

@@ -1,15 +1,15 @@
 apiVersion: v2
 appVersion: 0.14.2
 description: locally hosted web application that allows you to perform various operations on PDF files
-home: https://github.com/Frooodle/Stirling-PDF
+home: https://github.com/Stirling-Tools/Stirling-PDF
 keywords:
 - stirling-pdf
 - helm
 - charts repo
 maintainers:
-- name: Frooodle
+- name: Stirling-Tools
-  url: https://github.com/Frooodle/Stirling-PDF
+  url: https://github.com/Stirling-Tools/Stirling-PDF
 name: stirling-pdf-chart
 sources:
-- https://github.com/Frooodle/Stirling-PDF
+- https://github.com/Stirling-Tools/Stirling-PDF
 version: 1.0.0

exampleYmlFiles/docker-compose-latest-lite-security.yml

@@ -0,0 +1,31 @@
+version: '3.3'
+services:
+  stirling-pdf:
+    container_name: Stirling-PDF-Lite-Security
+    image: frooodle/s-pdf:latest-lite
+    deploy:
+      resources:
+        limits:
+          memory: 2G
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:8080/api/v1/info/status | grep -q 'UP' && curl -fL http://localhost:8080/ | grep -q 'Please sign in'"]
+      interval: 5s
+      timeout: 10s
+      retries: 16
+    ports:
+      - 8080:8080
+    volumes:
+      - /stirling/latest/data:/usr/share/tesseract-ocr/5/tessdata:rw
+      - /stirling/latest/config:/configs:rw
+      - /stirling/latest/logs:/logs:rw
+    environment:
+      DOCKER_ENABLE_SECURITY: "true"
+      SECURITY_ENABLELOGIN: "true"
+      SYSTEM_DEFAULTLOCALE: en-US
+      UI_APPNAME: Stirling-PDF-Lite
+      UI_HOMEDESCRIPTION: Demo site for Stirling-PDF-Lite Latest with Security
+      UI_APPNAMENAVBAR: Stirling-PDF-Lite Latest
+      SYSTEM_MAXFILESIZE: "100"
+      METRICS_ENABLED: "true"
+      SYSTEM_GOOGLEVISIBILITY: "true"
+    restart: on-failure:5

exampleYmlFiles/docker-compose-latest-lite.yml

@@ -0,0 +1,30 @@
+version: '3.3'
+services:
+  stirling-pdf:
+    container_name: Stirling-PDF-Lite
+    image: frooodle/s-pdf:latest-lite
+    deploy:
+      resources:
+        limits:
+          memory: 2G
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:8080/api/v1/info/status | grep -q 'UP' && curl -fL http://localhost:8080/ | grep -qv 'Please sign in'"]
+      interval: 5s
+      timeout: 10s
+      retries: 16
+    ports:
+      - 8080:8080
+    volumes:
+      - /stirling/latest/config:/configs:rw
+      - /stirling/latest/logs:/logs:rw
+    environment:
+      DOCKER_ENABLE_SECURITY: "false"
+      SECURITY_ENABLELOGIN: "false"
+      SYSTEM_DEFAULTLOCALE: en-US
+      UI_APPNAME: Stirling-PDF-Lite
+      UI_HOMEDESCRIPTION: Demo site for Stirling-PDF-Lite Latest
+      UI_APPNAMENAVBAR: Stirling-PDF-Lite Latest
+      SYSTEM_MAXFILESIZE: "100"
+      METRICS_ENABLED: "true"
+      SYSTEM_GOOGLEVISIBILITY: "true"
+    restart: on-failure:5

exampleYmlFiles/docker-compose-latest-security.yml

@@ -0,0 +1,31 @@
+version: '3.3'
+services:
+  stirling-pdf:
+    container_name: Stirling-PDF-Security
+    image: frooodle/s-pdf:latest
+    deploy:
+      resources:
+        limits:
+          memory: 4G
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:8080/api/v1/info/status | grep -q 'UP' && curl -fL http://localhost:8080/ | grep -q 'Please sign in'"]
+      interval: 5s
+      timeout: 10s
+      retries: 16
+    ports:
+      - 8080:8080
+    volumes:
+      - /stirling/latest/data:/usr/share/tesseract-ocr/5/tessdata:rw
+      - /stirling/latest/config:/configs:rw
+      - /stirling/latest/logs:/logs:rw
+    environment:
+      DOCKER_ENABLE_SECURITY: "true"
+      SECURITY_ENABLELOGIN: "true"
+      SYSTEM_DEFAULTLOCALE: en-US
+      UI_APPNAME: Stirling-PDF
+      UI_HOMEDESCRIPTION: Demo site for Stirling-PDF Latest with Security
+      UI_APPNAMENAVBAR: Stirling-PDF Latest
+      SYSTEM_MAXFILESIZE: "100"
+      METRICS_ENABLED: "true"
+      SYSTEM_GOOGLEVISIBILITY: "true"
+    restart: on-failure:5

exampleYmlFiles/docker-compose-latest-ultra-lite-security.yml

@@ -0,0 +1,31 @@
+version: '3.3'
+services:
+  stirling-pdf:
+    container_name: Stirling-PDF-Ultra-Lite-Security
+    image: frooodle/s-pdf:latest-ultra-lite
+    deploy:
+      resources:
+        limits:
+          memory: 1G
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:8080/api/v1/info/status | grep -q 'UP' && curl -fL http://localhost:8080/ | grep -q 'Please sign in'"]
+      interval: 5s
+      timeout: 10s
+      retries: 16
+    ports:
+      - 8080:8080
+    volumes:
+      - /stirling/latest/data:/usr/share/tesseract-ocr/5/tessdata:rw
+      - /stirling/latest/config:/configs:rw
+      - /stirling/latest/logs:/logs:rw
+    environment:
+      DOCKER_ENABLE_SECURITY: "true"
+      SECURITY_ENABLELOGIN: "true"
+      SYSTEM_DEFAULTLOCALE: en-US
+      UI_APPNAME: Stirling-PDF-Lite
+      UI_HOMEDESCRIPTION: Demo site for Stirling-PDF-Lite Latest with Security
+      UI_APPNAMENAVBAR: Stirling-PDF-Lite Latest
+      SYSTEM_MAXFILESIZE: "100"
+      METRICS_ENABLED: "true"
+      SYSTEM_GOOGLEVISIBILITY: "true"
+    restart: on-failure:5

exampleYmlFiles/docker-compose-latest-ultra-lite.yml

@@ -0,0 +1,30 @@
+version: '3.3'
+services:
+  stirling-pdf:
+    container_name: Stirling-PDF-Ultra-Lite
+    image: frooodle/s-pdf:latest-ultra-lite
+    deploy:
+      resources:
+        limits:
+          memory: 1G
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:8080/api/v1/info/status | grep -q 'UP' && curl -fL http://localhost:8080/ | grep -qv 'Please sign in'"]
+      interval: 5s
+      timeout: 10s
+      retries: 16
+    ports:
+      - 8080:8080
+    volumes:
+      - /stirling/latest/config:/configs:rw
+      - /stirling/latest/logs:/logs:rw
+    environment:
+      DOCKER_ENABLE_SECURITY: "false"
+      SECURITY_ENABLELOGIN: "false"
+      SYSTEM_DEFAULTLOCALE: en-US
+      UI_APPNAME: Stirling-PDF-Ultra-lite
+      UI_HOMEDESCRIPTION: Demo site for Stirling-PDF-Ultra-lite Latest
+      UI_APPNAMENAVBAR: Stirling-PDF-Ultra-lite Latest
+      SYSTEM_MAXFILESIZE: "100"
+      METRICS_ENABLED: "true"
+      SYSTEM_GOOGLEVISIBILITY: "true"
+    restart: on-failure:5

exampleYmlFiles/docker-compose-latest.yml

@@ -0,0 +1,31 @@
+version: '3.3'
+services:
+  stirling-pdf:
+    container_name: Stirling-PDF
+    image: frooodle/s-pdf:latest
+    deploy:
+      resources:
+        limits:
+          memory: 4G
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:8080/api/v1/info/status | grep -q 'UP' && curl -fL http://localhost:8080/ | grep -qv 'Please sign in'"]
+      interval: 5s
+      timeout: 10s
+      retries: 16
+    ports:
+      - 8080:8080
+    volumes:
+      - /stirling/latest/data:/usr/share/tesseract-ocr/5/tessdata:rw
+      - /stirling/latest/config:/configs:rw
+      - /stirling/latest/logs:/logs:rw
+    environment:
+      DOCKER_ENABLE_SECURITY: "false"
+      SECURITY_ENABLELOGIN: "false"
+      SYSTEM_DEFAULTLOCALE: en-US
+      UI_APPNAME: Stirling-PDF
+      UI_HOMEDESCRIPTION: Demo site for Stirling-PDF Latest
+      UI_APPNAMENAVBAR: Stirling-PDF Latest
+      SYSTEM_MAXFILESIZE: "100"
+      METRICS_ENABLED: "true"
+      SYSTEM_GOOGLEVISIBILITY: "true"
+    restart: on-failure:5

scripts/download-security-jar.sh

@@ -2,13 +2,13 @@ echo "Running Stirling PDF with DOCKER_ENABLE_SECURITY=${DOCKER_ENABLE_SECURITY}
 # Check for DOCKER_ENABLE_SECURITY and download the appropriate JAR if required
 if [ "$DOCKER_ENABLE_SECURITY" = "true" ] && [ "$VERSION_TAG" != "alpha" ]; then
     if [ ! -f app-security.jar ]; then
-    	echo "Trying to download from: https://github.com/Frooodle/Stirling-PDF/releases/download/v$VERSION_TAG/Stirling-PDF-with-login.jar"
+    	echo "Trying to download from: https://github.com/Stirling-Tools/Stirling-PDF/releases/download/v$VERSION_TAG/Stirling-PDF-with-login.jar"
-        curl -L -o app-security.jar https://github.com/Frooodle/Stirling-PDF/releases/download/v$VERSION_TAG/Stirling-PDF-with-login.jar
+        curl -L -o app-security.jar https://github.com/Stirling-Tools/Stirling-PDF/releases/download/v$VERSION_TAG/Stirling-PDF-with-login.jar
        
         # If the first download attempt failed, try with the 'v' prefix
         if [ $? -ne 0 ]; then
-            echo "Trying to download from: https://github.com/Frooodle/Stirling-PDF/releases/download/$VERSION_TAG/Stirling-PDF-with-login.jar"
+            echo "Trying to download from: https://github.com/Stirling-Tools/Stirling-PDF/releases/download/$VERSION_TAG/Stirling-PDF-with-login.jar"
-        	curl -L -o app-security.jar https://github.com/Frooodle/Stirling-PDF/releases/download/$VERSION_TAG/Stirling-PDF-with-login.jar
+        	curl -L -o app-security.jar https://github.com/Stirling-Tools/Stirling-PDF/releases/download/$VERSION_TAG/Stirling-PDF-with-login.jar
         fi
 
         if [ $? -eq 0 ]; then  # checks if curl was successful

src/main/java/org/apache/pdfbox/examples/signature/CMSProcessableInputStream.java

@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.pdfbox.examples.signature;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import org.bouncycastle.asn1.ASN1ObjectIdentifier;
+import org.bouncycastle.asn1.cms.CMSObjectIdentifiers;
+import org.bouncycastle.cms.CMSException;
+import org.bouncycastle.cms.CMSTypedData;
+
+/**
+ * Wraps a InputStream into a CMSProcessable object for bouncy castle. It's a memory saving
+ * alternative to the {@link org.bouncycastle.cms.CMSProcessableByteArray CMSProcessableByteArray}
+ * class.
+ *
+ * @author Thomas Chojecki
+ */
+class CMSProcessableInputStream implements CMSTypedData {
+    private final InputStream in;
+    private final ASN1ObjectIdentifier contentType;
+
+    CMSProcessableInputStream(InputStream is) {
+        this(new ASN1ObjectIdentifier(CMSObjectIdentifiers.data.getId()), is);
+    }
+
+    CMSProcessableInputStream(ASN1ObjectIdentifier type, InputStream is) {
+        contentType = type;
+        in = is;
+    }
+
+    @Override
+    public Object getContent() {
+        return in;
+    }
+
+    @Override
+    public void write(OutputStream out) throws IOException, CMSException {
+        // read the content only one time
+        in.transferTo(out);
+        in.close();
+    }
+
+    @Override
+    public ASN1ObjectIdentifier getContentType() {
+        return contentType;
+    }
+}

src/main/java/org/apache/pdfbox/examples/signature/CreateSignatureBase.java

@@ -0,0 +1,170 @@
+/*
+ * Copyright 2015 The Apache Software Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.pdfbox.examples.signature;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URISyntaxException;
+import java.security.GeneralSecurityException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.PrivateKey;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import java.util.Arrays;
+import java.util.Enumeration;
+
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.SignatureInterface;
+import org.bouncycastle.cert.jcajce.JcaCertStore;
+import org.bouncycastle.cms.CMSException;
+import org.bouncycastle.cms.CMSSignedData;
+import org.bouncycastle.cms.CMSSignedDataGenerator;
+import org.bouncycastle.cms.jcajce.JcaSignerInfoGeneratorBuilder;
+import org.bouncycastle.operator.ContentSigner;
+import org.bouncycastle.operator.OperatorCreationException;
+import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
+import org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder;
+
+public abstract class CreateSignatureBase implements SignatureInterface {
+    private PrivateKey privateKey;
+    private Certificate[] certificateChain;
+    private String tsaUrl;
+    private boolean externalSigning;
+
+    /**
+     * Initialize the signature creator with a keystore (pkcs12) and pin that should be used for the
+     * signature.
+     *
+     * @param keystore is a pkcs12 keystore.
+     * @param pin is the pin for the keystore / private key
+     * @throws KeyStoreException if the keystore has not been initialized (loaded)
+     * @throws NoSuchAlgorithmException if the algorithm for recovering the key cannot be found
+     * @throws UnrecoverableKeyException if the given password is wrong
+     * @throws CertificateException if the certificate is not valid as signing time
+     * @throws IOException if no certificate could be found
+     */
+    public CreateSignatureBase(KeyStore keystore, char[] pin)
+            throws KeyStoreException,
+                    UnrecoverableKeyException,
+                    NoSuchAlgorithmException,
+                    IOException,
+                    CertificateException {
+        // grabs the first alias from the keystore and get the private key. An
+        // alternative method or constructor could be used for setting a specific
+        // alias that should be used.
+        Enumeration<String> aliases = keystore.aliases();
+        String alias;
+        Certificate cert = null;
+        while (cert == null && aliases.hasMoreElements()) {
+            alias = aliases.nextElement();
+            setPrivateKey((PrivateKey) keystore.getKey(alias, pin));
+            Certificate[] certChain = keystore.getCertificateChain(alias);
+            if (certChain != null) {
+                setCertificateChain(certChain);
+                cert = certChain[0];
+                if (cert instanceof X509Certificate) {
+                    // avoid expired certificate
+                    ((X509Certificate) cert).checkValidity();
+
+                    //// SigUtils.checkCertificateUsage((X509Certificate) cert);
+                }
+            }
+        }
+
+        if (cert == null) {
+            throw new IOException("Could not find certificate");
+        }
+    }
+
+    public final void setPrivateKey(PrivateKey privateKey) {
+        this.privateKey = privateKey;
+    }
+
+    public final void setCertificateChain(final Certificate[] certificateChain) {
+        this.certificateChain = certificateChain;
+    }
+
+    public Certificate[] getCertificateChain() {
+        return certificateChain;
+    }
+
+    public void setTsaUrl(String tsaUrl) {
+        this.tsaUrl = tsaUrl;
+    }
+
+    /**
+     * SignatureInterface sample implementation.
+     *
+     * <p>This method will be called from inside of the pdfbox and create the PKCS #7 signature. The
+     * given InputStream contains the bytes that are given by the byte range.
+     *
+     * <p>This method is for internal use only.
+     *
+     * <p>Use your favorite cryptographic library to implement PKCS #7 signature creation. If you
+     * want to create the hash and the signature separately (e.g. to transfer only the hash to an
+     * external application), read <a href="https://stackoverflow.com/questions/41767351">this
+     * answer</a> or <a href="https://stackoverflow.com/questions/56867465">this answer</a>.
+     *
+     * @throws IOException
+     */
+    @Override
+    public byte[] sign(InputStream content) throws IOException {
+        // cannot be done private (interface)
+        try {
+            CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
+            X509Certificate cert = (X509Certificate) certificateChain[0];
+            ContentSigner sha1Signer =
+                    new JcaContentSignerBuilder("SHA256WithRSA").build(privateKey);
+            gen.addSignerInfoGenerator(
+                    new JcaSignerInfoGeneratorBuilder(
+                                    new JcaDigestCalculatorProviderBuilder().build())
+                            .build(sha1Signer, cert));
+            gen.addCertificates(new JcaCertStore(Arrays.asList(certificateChain)));
+            CMSProcessableInputStream msg = new CMSProcessableInputStream(content);
+            CMSSignedData signedData = gen.generate(msg, false);
+            if (tsaUrl != null && !tsaUrl.isEmpty()) {
+                ValidationTimeStamp validation = new ValidationTimeStamp(tsaUrl);
+                signedData = validation.addSignedTimeStamp(signedData);
+            }
+            return signedData.getEncoded();
+        } catch (GeneralSecurityException
+                | CMSException
+                | OperatorCreationException
+                | URISyntaxException e) {
+            throw new IOException(e);
+        }
+    }
+
+    /**
+     * Set if external signing scenario should be used. If {@code false}, SignatureInterface would
+     * be used for signing.
+     *
+     * <p>Default: {@code false}
+     *
+     * @param externalSigning {@code true} if external signing should be performed
+     */
+    public void setExternalSigning(boolean externalSigning) {
+        this.externalSigning = externalSigning;
+    }
+
+    public boolean isExternalSigning() {
+        return externalSigning;
+    }
+}

src/main/java/org/apache/pdfbox/examples/signature/TSAClient.java

@@ -0,0 +1,176 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.pdfbox.examples.signature;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.math.BigInteger;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.charset.StandardCharsets;
+import java.security.DigestInputStream;
+import java.security.MessageDigest;
+import java.security.SecureRandom;
+import java.util.Base64;
+import java.util.Random;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.bouncycastle.asn1.ASN1ObjectIdentifier;
+import org.bouncycastle.operator.DefaultDigestAlgorithmIdentifierFinder;
+import org.bouncycastle.operator.DigestAlgorithmIdentifierFinder;
+import org.bouncycastle.tsp.TSPException;
+import org.bouncycastle.tsp.TimeStampRequest;
+import org.bouncycastle.tsp.TimeStampRequestGenerator;
+import org.bouncycastle.tsp.TimeStampResponse;
+import org.bouncycastle.tsp.TimeStampToken;
+
+/**
+ * Time Stamping Authority (TSA) Client [RFC 3161].
+ *
+ * @author Vakhtang Koroghlishvili
+ * @author John Hewson
+ */
+public class TSAClient {
+    private static final Logger LOG = LogManager.getLogger(TSAClient.class);
+
+    private static final DigestAlgorithmIdentifierFinder ALGORITHM_OID_FINDER =
+            new DefaultDigestAlgorithmIdentifierFinder();
+
+    private final URL url;
+    private final String username;
+    private final String password;
+    private final MessageDigest digest;
+
+    // SecureRandom.getInstanceStrong() would be better, but sometimes blocks on Linux
+    private static final Random RANDOM = new SecureRandom();
+
+    /**
+     * @param url the URL of the TSA service
+     * @param username user name of TSA
+     * @param password password of TSA
+     * @param digest the message digest to use
+     */
+    public TSAClient(URL url, String username, String password, MessageDigest digest) {
+        this.url = url;
+        this.username = username;
+        this.password = password;
+        this.digest = digest;
+    }
+
+    /**
+     * @param content
+     * @return the time stamp token
+     * @throws IOException if there was an error with the connection or data from the TSA server, or
+     *     if the time stamp response could not be validated
+     */
+    public TimeStampToken getTimeStampToken(InputStream content) throws IOException {
+        digest.reset();
+        DigestInputStream dis = new DigestInputStream(content, digest);
+        while (dis.read() != -1) {
+            // do nothing
+        }
+        byte[] hash = digest.digest();
+
+        // 32-bit cryptographic nonce
+        int nonce = RANDOM.nextInt();
+
+        // generate TSA request
+        TimeStampRequestGenerator tsaGenerator = new TimeStampRequestGenerator();
+        tsaGenerator.setCertReq(true);
+        ASN1ObjectIdentifier oid = ALGORITHM_OID_FINDER.find(digest.getAlgorithm()).getAlgorithm();
+        TimeStampRequest request = tsaGenerator.generate(oid, hash, BigInteger.valueOf(nonce));
+
+        // get TSA response
+        byte[] tsaResponse = getTSAResponse(request.getEncoded());
+
+        TimeStampResponse response;
+        try {
+            response = new TimeStampResponse(tsaResponse);
+            response.validate(request);
+        } catch (TSPException e) {
+            throw new IOException(e);
+        }
+
+        TimeStampToken timeStampToken = response.getTimeStampToken();
+        if (timeStampToken == null) {
+            // https://www.ietf.org/rfc/rfc3161.html#section-2.4.2
+            throw new IOException(
+                    "Response from "
+                            + url
+                            + " does not have a time stamp token, status: "
+                            + response.getStatus()
+                            + " ("
+                            + response.getStatusString()
+                            + ")");
+        }
+
+        return timeStampToken;
+    }
+
+    // gets response data for the given encoded TimeStampRequest data
+    // throws IOException if a connection to the TSA cannot be established
+    private byte[] getTSAResponse(byte[] request) throws IOException {
+        LOG.debug("Opening connection to TSA server");
+
+        // todo: support proxy servers
+        URLConnection connection = url.openConnection();
+        connection.setDoOutput(true);
+        connection.setDoInput(true);
+        connection.setRequestProperty("Content-Type", "application/timestamp-query");
+
+        LOG.debug("Established connection to TSA server");
+
+        if (username != null && password != null && !username.isEmpty() && !password.isEmpty()) {
+            String contentEncoding = connection.getContentEncoding();
+            if (contentEncoding == null) {
+                contentEncoding = StandardCharsets.UTF_8.name();
+            }
+            connection.setRequestProperty(
+                    "Authorization",
+                    "Basic "
+                            + new String(
+                                    Base64.getEncoder()
+                                            .encode(
+                                                    (username + ":" + password)
+                                                            .getBytes(contentEncoding))));
+        }
+
+        // read response
+        try (OutputStream output = connection.getOutputStream()) {
+            output.write(request);
+        } catch (IOException ex) {
+            LOG.error("Exception when writing to {}", this.url, ex);
+            throw ex;
+        }
+
+        LOG.debug("Waiting for response from TSA server");
+
+        byte[] response;
+        try (InputStream input = connection.getInputStream()) {
+            response = input.readAllBytes();
+        } catch (IOException ex) {
+            LOG.error("Exception when reading from {}", this.url, ex);
+            throw ex;
+        }
+
+        LOG.debug("Received response from TSA server");
+
+        return response;
+    }
+}

src/main/java/org/apache/pdfbox/examples/signature/ValidationTimeStamp.java

@@ -0,0 +1,134 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.pdfbox.examples.signature;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.bouncycastle.asn1.ASN1Encodable;
+import org.bouncycastle.asn1.ASN1EncodableVector;
+import org.bouncycastle.asn1.ASN1ObjectIdentifier;
+import org.bouncycastle.asn1.ASN1Primitive;
+import org.bouncycastle.asn1.DERSet;
+import org.bouncycastle.asn1.cms.Attribute;
+import org.bouncycastle.asn1.cms.AttributeTable;
+import org.bouncycastle.asn1.cms.Attributes;
+import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
+import org.bouncycastle.cms.CMSSignedData;
+import org.bouncycastle.cms.SignerInformation;
+import org.bouncycastle.cms.SignerInformationStore;
+import org.bouncycastle.tsp.TimeStampToken;
+
+/**
+ * This class wraps the TSAClient and the work that has to be done with it. Like Adding Signed
+ * TimeStamps to a signature, or creating a CMS timestamp attribute (with a signed timestamp)
+ *
+ * @author Others
+ * @author Alexis Suter
+ */
+public class ValidationTimeStamp {
+    private TSAClient tsaClient;
+
+    /**
+     * @param tsaUrl The url where TS-Request will be done.
+     * @throws NoSuchAlgorithmException
+     * @throws MalformedURLException
+     * @throws java.net.URISyntaxException
+     */
+    public ValidationTimeStamp(String tsaUrl)
+            throws NoSuchAlgorithmException, MalformedURLException, URISyntaxException {
+        if (tsaUrl != null) {
+            MessageDigest digest = MessageDigest.getInstance("SHA-256");
+            this.tsaClient = new TSAClient(new URI(tsaUrl).toURL(), null, null, digest);
+        }
+    }
+
+    /**
+     * Creates a signed timestamp token by the given input stream.
+     *
+     * @param content InputStream of the content to sign
+     * @return the byte[] of the timestamp token
+     * @throws IOException
+     */
+    public byte[] getTimeStampToken(InputStream content) throws IOException {
+        TimeStampToken timeStampToken = tsaClient.getTimeStampToken(content);
+        return timeStampToken.getEncoded();
+    }
+
+    /**
+     * Extend cms signed data with TimeStamp first or to all signers
+     *
+     * @param signedData Generated CMS signed data
+     * @return CMSSignedData Extended CMS signed data
+     * @throws IOException
+     */
+    public CMSSignedData addSignedTimeStamp(CMSSignedData signedData) throws IOException {
+        SignerInformationStore signerStore = signedData.getSignerInfos();
+        List<SignerInformation> newSigners = new ArrayList<>();
+
+        for (SignerInformation signer : signerStore.getSigners()) {
+            // This adds a timestamp to every signer (into his unsigned attributes) in the
+            // signature.
+            newSigners.add(signTimeStamp(signer));
+        }
+
+        // Because new SignerInformation is created, new SignerInfoStore has to be created
+        // and also be replaced in signedData. Which creates a new signedData object.
+        return CMSSignedData.replaceSigners(signedData, new SignerInformationStore(newSigners));
+    }
+
+    /**
+     * Extend CMS Signer Information with the TimeStampToken into the unsigned Attributes.
+     *
+     * @param signer information about signer
+     * @return information about SignerInformation
+     * @throws IOException
+     */
+    private SignerInformation signTimeStamp(SignerInformation signer) throws IOException {
+        AttributeTable unsignedAttributes = signer.getUnsignedAttributes();
+
+        ASN1EncodableVector vector = new ASN1EncodableVector();
+        if (unsignedAttributes != null) {
+            vector = unsignedAttributes.toASN1EncodableVector();
+        }
+
+        TimeStampToken timeStampToken =
+                tsaClient.getTimeStampToken(new ByteArrayInputStream(signer.getSignature()));
+        byte[] token = timeStampToken.getEncoded();
+        ASN1ObjectIdentifier oid = PKCSObjectIdentifiers.id_aa_signatureTimeStampToken;
+        ASN1Encodable signatureTimeStamp =
+                new Attribute(oid, new DERSet(ASN1Primitive.fromByteArray(token)));
+
+        vector.add(signatureTimeStamp);
+        Attributes signedAttributes = new Attributes(vector);
+
+        // There is no other way changing the unsigned attributes of the signer information.
+        // result is never null, new SignerInformation always returned,
+        // see source code of replaceUnsignedAttributes
+        return SignerInformation.replaceUnsignedAttributes(
+                signer, new AttributeTable(signedAttributes));
+    }
+}

src/main/java/org/apache/pdfbox/examples/util/ConnectedInputStream.java

@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.pdfbox.examples.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.HttpURLConnection;
+
+/**
+ * Delegate class to close the connection when the class gets closed.
+ *
+ * @author Tilman Hausherr
+ */
+public class ConnectedInputStream extends InputStream {
+    HttpURLConnection con;
+    InputStream is;
+
+    public ConnectedInputStream(HttpURLConnection con, InputStream is) {
+        this.con = con;
+        this.is = is;
+    }
+
+    @Override
+    public int read() throws IOException {
+        return is.read();
+    }
+
+    @Override
+    public int read(byte[] b) throws IOException {
+        return is.read(b);
+    }
+
+    @Override
+    public int read(byte[] b, int off, int len) throws IOException {
+        return is.read(b, off, len);
+    }
+
+    @Override
+    public long skip(long n) throws IOException {
+        return is.skip(n);
+    }
+
+    @Override
+    public int available() throws IOException {
+        return is.available();
+    }
+
+    @Override
+    public synchronized void mark(int readlimit) {
+        is.mark(readlimit);
+    }
+
+    @Override
+    public synchronized void reset() throws IOException {
+        is.reset();
+    }
+
+    @Override
+    public boolean markSupported() {
+        return is.markSupported();
+    }
+
+    @Override
+    public void close() throws IOException {
+        is.close();
+        con.disconnect();
+    }
+}

src/main/java/stirling/software/SPDF/LibreOfficeListener.java

@@ -22,14 +22,14 @@ public class LibreOfficeListener {
 
     private Process process;
 
-    private LibreOfficeListener() {
+    private LibreOfficeListener() {}
-    }
 
     private boolean isListenerRunning() {
         try {
             System.out.println("waiting for listener to start");
             Socket socket = new Socket();
-            socket.connect(new InetSocketAddress("localhost", 2002), 1000); // Timeout after 1 second
+            socket.connect(
+                    new InetSocketAddress("localhost", 2002), 1000); // Timeout after 1 second
             socket.close();
             return true;
         } catch (IOException e) {
@@ -49,21 +49,22 @@ public class LibreOfficeListener {
 
         // Start a background thread to monitor the activity timeout
         executorService = Executors.newSingleThreadExecutor();
-        executorService.submit(() -> {
+        executorService.submit(
-            while (true) {
+                () -> {
-                long idleTime = System.currentTimeMillis() - lastActivityTime;
+                    while (true) {
-                if (idleTime >= ACTIVITY_TIMEOUT) {
+                        long idleTime = System.currentTimeMillis() - lastActivityTime;
-                    // If there has been no activity for too long, tear down the listener
+                        if (idleTime >= ACTIVITY_TIMEOUT) {
-                    process.destroy();
+                            // If there has been no activity for too long, tear down the listener
-                    break;
+                            process.destroy();
-                }
+                            break;
-                try {
+                        }
-                    Thread.sleep(5000); // Check for inactivity every 5 seconds
+                        try {
-                } catch (InterruptedException e) {
+                            Thread.sleep(5000); // Check for inactivity every 5 seconds
-                    break;
+                        } catch (InterruptedException e) {
-                }
+                            break;
-            }
+                        }
-        });
+                    }
+                });
 
         // Wait for the listener to start up
         long startTime = System.currentTimeMillis();
@@ -92,5 +93,4 @@ public class LibreOfficeListener {
             process.destroy();
         }
     }
-
 }

src/main/java/stirling/software/SPDF/SPdfApplication.java

@@ -13,13 +13,12 @@ import org.springframework.scheduling.annotation.EnableScheduling;
 import jakarta.annotation.PostConstruct;
 import stirling.software.SPDF.config.ConfigInitializer;
 import stirling.software.SPDF.utils.GeneralUtils;
-@SpringBootApplication
 
+@SpringBootApplication
 @EnableScheduling
 public class SPdfApplication {
 
-	@Autowired
+    @Autowired private Environment env;
-    private Environment env;
 
     @PostConstruct
     public void init() {
@@ -29,11 +28,7 @@ public class SPdfApplication {
 
         if (browserOpen) {
             try {
-                String port = env.getProperty("local.server.port");
+                String url = "http://localhost:" + getPort();
-                if(port == null || port.length() == 0) {
-                	port="8080";
-                }
-                String url = "http://localhost:" + port;
 
                 String os = System.getProperty("os.name").toLowerCase();
                 Runtime rt = Runtime.getRuntime();
@@ -48,36 +43,39 @@ public class SPdfApplication {
     }
 
     public static void main(String[] args) {
-    	SpringApplication app = new SpringApplication(SPdfApplication.class);
+        SpringApplication app = new SpringApplication(SPdfApplication.class);
-    	app.addInitializers(new ConfigInitializer());
+        app.addInitializers(new ConfigInitializer());
-    	if (Files.exists(Paths.get("configs/settings.yml"))) {
+        if (Files.exists(Paths.get("configs/settings.yml"))) {
-            app.setDefaultProperties(Collections.singletonMap("spring.config.additional-location", "file:configs/settings.yml"));
+            app.setDefaultProperties(
+                    Collections.singletonMap(
+                            "spring.config.additional-location", "file:configs/settings.yml"));
         } else {
-            System.out.println("External configuration file 'configs/settings.yml' does not exist. Using default configuration and environment configuration instead.");
+            System.out.println(
+                    "External configuration file 'configs/settings.yml' does not exist. Using default configuration and environment configuration instead.");
         }
         app.run(args);
 
         try {
-			Thread.sleep(1000);
+            Thread.sleep(1000);
-		} catch (InterruptedException e) {
+        } catch (InterruptedException e) {
-			// TODO Auto-generated catch block
+            // TODO Auto-generated catch block
-			e.printStackTrace();
+            e.printStackTrace();
-		}
+        }
 
         GeneralUtils.createDir("customFiles/static/");
         GeneralUtils.createDir("customFiles/templates/");
 
-        
-        
         System.out.println("Stirling-PDF Started.");
 
-        String port = System.getProperty("local.server.port");
+        String url = "http://localhost:" + getPort();
-        if(port == null || port.length() == 0) {
-        	port="8080";
-        }
-        String url = "http://localhost:" + port;
         System.out.println("Navigate to " + url);
     }
 
-    
+    public static String getPort() {
+        String port = System.getProperty("local.server.port");
+        if (port == null || port.isEmpty()) {
+            port = "8080";
+        }
+        return port;
+    }
 }

src/main/java/stirling/software/SPDF/config/AppConfig.java

@@ -1,16 +1,22 @@
 package stirling.software.SPDF.config;
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Properties;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
 
 import stirling.software.SPDF.model.ApplicationProperties;
+
 @Configuration
 public class AppConfig {
 
-    
+    @Autowired ApplicationProperties applicationProperties;
-    @Autowired
-    ApplicationProperties applicationProperties;
 
     @Bean(name = "loginEnabled")
     public boolean loginEnabled() {
@@ -19,40 +25,68 @@ public class AppConfig {
 
     @Bean(name = "appName")
     public String appName() {
-        String homeTitle =  applicationProperties.getUi().getAppName();
+        String homeTitle = applicationProperties.getUi().getAppName();
         return (homeTitle != null) ? homeTitle : "Stirling PDF";
     }
 
     @Bean(name = "appVersion")
     public String appVersion() {
-        String version = getClass().getPackage().getImplementationVersion();
+        Resource resource = new ClassPathResource("version.properties");
-        return (version != null) ? version : "0.0.0";
+        Properties props = new Properties();
+        try {
+            props.load(resource.getInputStream());
+            return props.getProperty("version");
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return "0.0.0";
     }
 
     @Bean(name = "homeText")
     public String homeText() {
-    	return (applicationProperties.getUi().getHomeDescription() != null) ? applicationProperties.getUi().getHomeDescription() : "null";
+        return (applicationProperties.getUi().getHomeDescription() != null)
+                ? applicationProperties.getUi().getHomeDescription()
+                : "null";
     }
 
-
     @Bean(name = "navBarText")
     public String navBarText() {
-        String defaultNavBar = applicationProperties.getUi().getAppNameNavbar() != null ? applicationProperties.getUi().getAppNameNavbar() : applicationProperties.getUi().getAppName();
+        String defaultNavBar =
+                applicationProperties.getUi().getAppNameNavbar() != null
+                        ? applicationProperties.getUi().getAppNameNavbar()
+                        : applicationProperties.getUi().getAppName();
         return (defaultNavBar != null) ? defaultNavBar : "Stirling PDF";
     }
 
     @Bean(name = "enableAlphaFunctionality")
     public boolean enableAlphaFunctionality() {
-        return applicationProperties.getSystem().getEnableAlphaFunctionality() != null ? applicationProperties.getSystem().getEnableAlphaFunctionality() : false;
+        return applicationProperties.getSystem().getEnableAlphaFunctionality() != null
+                ? applicationProperties.getSystem().getEnableAlphaFunctionality()
+                : false;
     }
 
-	@Bean(name = "rateLimit")
+    @Bean(name = "rateLimit")
     public boolean rateLimit() {
         String appName = System.getProperty("rateLimit");
-        if (appName == null) 
+        if (appName == null) appName = System.getenv("rateLimit");
-            appName = System.getenv("rateLimit");
         return (appName != null) ? Boolean.valueOf(appName) : false;
     }
 
+    @Bean(name = "RunningInDocker")
+    public boolean runningInDocker() {
+        return Files.exists(Paths.get("/.dockerenv"));
+    }
 
+    @Bean(name = "bookFormatsInstalled")
+    public boolean bookFormatsInstalled() {
+        return applicationProperties.getSystem().getCustomApplications().isInstallBookFormats();
+    }
+
+    @Bean(name = "htmlFormatsInstalled")
+    public boolean htmlFormatsInstalled() {
+        return applicationProperties
+                .getSystem()
+                .getCustomApplications()
+                .isInstallAdvancedHtmlToPDF();
+    }
 }

src/main/java/stirling/software/SPDF/config/Beans.java

@@ -16,8 +16,7 @@ import stirling.software.SPDF.model.ApplicationProperties;
 @Configuration
 public class Beans implements WebMvcConfigurer {
 
-	@Autowired
+    @Autowired ApplicationProperties applicationProperties;
-    ApplicationProperties applicationProperties;
 
     @Override
     public void addInterceptors(InterceptorRegistry registry) {
@@ -36,24 +35,25 @@ public class Beans implements WebMvcConfigurer {
     public LocaleResolver localeResolver() {
         SessionLocaleResolver slr = new SessionLocaleResolver();
 
-        
         String appLocaleEnv = applicationProperties.getSystem().getDefaultLocale();
-        Locale defaultLocale = Locale.UK; // Fallback to UK locale if environment variable is not set
+        Locale defaultLocale =
+                Locale.UK; // Fallback to UK locale if environment variable is not set
 
         if (appLocaleEnv != null && !appLocaleEnv.isEmpty()) {
             Locale tempLocale = Locale.forLanguageTag(appLocaleEnv);
             String tempLanguageTag = tempLocale.toLanguageTag();
 
-             if (appLocaleEnv.equalsIgnoreCase(tempLanguageTag)) {
+            if (appLocaleEnv.equalsIgnoreCase(tempLanguageTag)) {
                 defaultLocale = tempLocale;
             } else {
-                tempLocale = Locale.forLanguageTag(appLocaleEnv.replace("_","-"));
+                tempLocale = Locale.forLanguageTag(appLocaleEnv.replace("_", "-"));
                 tempLanguageTag = tempLocale.toLanguageTag();
 
                 if (appLocaleEnv.equalsIgnoreCase(tempLanguageTag)) {
                     defaultLocale = tempLocale;
                 } else {
-                    System.err.println("Invalid APP_LOCALE environment variable value. Falling back to default Locale.UK.");
+                    System.err.println(
+                            "Invalid APP_LOCALE environment variable value. Falling back to default Locale.UK.");
                 }
             }
         }
@@ -61,5 +61,4 @@ public class Beans implements WebMvcConfigurer {
         slr.setDefaultLocale(defaultLocale);
         return slr;
     }
-    
 }

src/main/java/stirling/software/SPDF/config/CleanUrlInterceptor.java

@@ -13,56 +13,62 @@ import jakarta.servlet.http.HttpServletResponse;
 
 public class CleanUrlInterceptor implements HandlerInterceptor {
 
-	private static final List<String> ALLOWED_PARAMS = Arrays.asList("lang", "endpoint", "endpoints", "logout", "error", "file", "messageType");
+    private static final List<String> ALLOWED_PARAMS =
+            Arrays.asList(
+                    "lang", "endpoint", "endpoints", "logout", "error", "file", "messageType");
 
+    @Override
+    public boolean preHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler)
+            throws Exception {
+        String queryString = request.getQueryString();
+        if (queryString != null && !queryString.isEmpty()) {
+            String requestURI = request.getRequestURI();
+            Map<String, String> parameters = new HashMap<>();
 
-	@Override
+            // Keep only the allowed parameters
-	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
+            String[] queryParameters = queryString.split("&");
-			throws Exception {
+            for (String param : queryParameters) {
-		String queryString = request.getQueryString();
+                String[] keyValue = param.split("=");
-		if (queryString != null && !queryString.isEmpty()) {
+                if (keyValue.length != 2) {
-			String requestURI = request.getRequestURI();
+                    continue;
-			Map<String, String> parameters = new HashMap<>();
+                }
+                if (ALLOWED_PARAMS.contains(keyValue[0])) {
+                    parameters.put(keyValue[0], keyValue[1]);
+                }
+            }
 
-			// Keep only the allowed parameters
+            // If there are any parameters that are not allowed
-			String[] queryParameters = queryString.split("&");
+            if (parameters.size() != queryParameters.length) {
-			for (String param : queryParameters) {
+                // Construct new query string
-				String[] keyValue = param.split("=");
+                StringBuilder newQueryString = new StringBuilder();
-				if (keyValue.length != 2) {
+                for (Map.Entry<String, String> entry : parameters.entrySet()) {
-					continue;
+                    if (newQueryString.length() > 0) {
-				}
+                        newQueryString.append("&");
-				if (ALLOWED_PARAMS.contains(keyValue[0])) {
+                    }
-					parameters.put(keyValue[0], keyValue[1]);
+                    newQueryString.append(entry.getKey()).append("=").append(entry.getValue());
-				}
+                }
-			}
 
-			// If there are any parameters that are not allowed
+                // Redirect to the URL with only allowed query parameters
-			if (parameters.size() != queryParameters.length) {
+                String redirectUrl = requestURI + "?" + newQueryString;
-				// Construct new query string
+                response.sendRedirect(redirectUrl);
-				StringBuilder newQueryString = new StringBuilder();
+                return false;
-				for (Map.Entry<String, String> entry : parameters.entrySet()) {
+            }
-					if (newQueryString.length() > 0) {
+        }
-						newQueryString.append("&");
+        return true;
-					}
+    }
-					newQueryString.append(entry.getKey()).append("=").append(entry.getValue());
-				}
 
-				// Redirect to the URL with only allowed query parameters
+    @Override
-				String redirectUrl = requestURI + "?" + newQueryString;
+    public void postHandle(
-				response.sendRedirect(redirectUrl);
+            HttpServletRequest request,
-				return false;
+            HttpServletResponse response,
-			}
+            Object handler,
-		}
+            ModelAndView modelAndView) {}
-		return true;
-	}
 
-	@Override
+    @Override
-	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
+    public void afterCompletion(
-			ModelAndView modelAndView) {
+            HttpServletRequest request,
-	}
+            HttpServletResponse response,
-
+            Object handler,
-	@Override
+            Exception ex) {}
-	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
-			Exception ex) {
-	}
 }

src/main/java/stirling/software/SPDF/config/ConfigInitializer.java

@@ -19,111 +19,125 @@ import java.util.stream.Collectors;
 import org.springframework.context.ApplicationContextInitializer;
 import org.springframework.context.ConfigurableApplicationContext;
 
-public class ConfigInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
+public class ConfigInitializer
+        implements ApplicationContextInitializer<ConfigurableApplicationContext> {
 
-	@Override
+    @Override
-	public void initialize(ConfigurableApplicationContext applicationContext) {
+    public void initialize(ConfigurableApplicationContext applicationContext) {
-		try {
+        try {
-			ensureConfigExists();
+            ensureConfigExists();
-		} catch (IOException e) {
+        } catch (IOException e) {
-			throw new RuntimeException("Failed to initialize application configuration", e);
+            throw new RuntimeException("Failed to initialize application configuration", e);
-		}
+        }
-	}
+    }
 
-	public void ensureConfigExists() throws IOException {
+    public void ensureConfigExists() throws IOException {
-		// Define the path to the external config directory
+        // Define the path to the external config directory
-		Path destPath = Paths.get("configs", "settings.yml");
+        Path destPath = Paths.get("configs", "settings.yml");
 
-		// Check if the file already exists
+        // Check if the file already exists
-		if (Files.notExists(destPath)) {
+        if (Files.notExists(destPath)) {
-			// Ensure the destination directory exists
+            // Ensure the destination directory exists
-			Files.createDirectories(destPath.getParent());
+            Files.createDirectories(destPath.getParent());
 
-			// Copy the resource from classpath to the external directory
+            // Copy the resource from classpath to the external directory
-			try (InputStream in = getClass().getClassLoader().getResourceAsStream("settings.yml.template")) {
+            try (InputStream in =
-				if (in != null) {
+                    getClass().getClassLoader().getResourceAsStream("settings.yml.template")) {
-					Files.copy(in, destPath);
+                if (in != null) {
-				} else {
+                    Files.copy(in, destPath);
-					throw new FileNotFoundException("Resource file not found: settings.yml.template");
+                } else {
-				}
+                    throw new FileNotFoundException(
-			}
+                            "Resource file not found: settings.yml.template");
-		} else {
+                }
-			// If user file exists, we need to merge it with the template from the classpath
+            }
-			List<String> templateLines;
+        } else {
-			try (InputStream in = getClass().getClassLoader().getResourceAsStream("settings.yml.template")) {
+            // If user file exists, we need to merge it with the template from the classpath
-				templateLines = new BufferedReader(new InputStreamReader(in, StandardCharsets.UTF_8)).lines()
+            List<String> templateLines;
-						.collect(Collectors.toList());
+            try (InputStream in =
-			}
+                    getClass().getClassLoader().getResourceAsStream("settings.yml.template")) {
+                templateLines =
+                        new BufferedReader(new InputStreamReader(in, StandardCharsets.UTF_8))
+                                .lines()
+                                .collect(Collectors.toList());
+            }
 
-			mergeYamlFiles(templateLines, destPath, destPath);
+            mergeYamlFiles(templateLines, destPath, destPath);
-		}
+        }
-	}
+    }
 
-	public void mergeYamlFiles(List<String> templateLines, Path userFilePath, Path outputPath) throws IOException {
+    public void mergeYamlFiles(List<String> templateLines, Path userFilePath, Path outputPath)
-		List<String> userLines = Files.readAllLines(userFilePath);
+            throws IOException {
-		List<String> mergedLines = new ArrayList<>();
+        List<String> userLines = Files.readAllLines(userFilePath);
-		boolean insideAutoGenerated = false;
+        List<String> mergedLines = new ArrayList<>();
-		boolean beforeFirstKey = true;
+        boolean insideAutoGenerated = false;
+        boolean beforeFirstKey = true;
 
-		Function<String, Boolean> isCommented = line -> line.trim().startsWith("#");
+        Function<String, Boolean> isCommented = line -> line.trim().startsWith("#");
-		Function<String, String> extractKey = line -> {
+        Function<String, String> extractKey =
-			String[] parts = line.split(":");
+                line -> {
-			return parts.length > 0 ? parts[0].trim().replace("#", "").trim() : "";
+                    String[] parts = line.split(":");
-		};
+                    return parts.length > 0 ? parts[0].trim().replace("#", "").trim() : "";
+                };
 
-		Set<String> userKeys = userLines.stream().map(extractKey).collect(Collectors.toSet());
+        Set<String> userKeys = userLines.stream().map(extractKey).collect(Collectors.toSet());
 
-		for (String line : templateLines) {
+        for (String line : templateLines) {
-			String key = extractKey.apply(line);
+            String key = extractKey.apply(line);
 
-			if (line.trim().equalsIgnoreCase("AutomaticallyGenerated:")) {
+            if (line.trim().equalsIgnoreCase("AutomaticallyGenerated:")) {
-				insideAutoGenerated = true;
+                insideAutoGenerated = true;
-				mergedLines.add(line);
+                mergedLines.add(line);
-				continue;
+                continue;
-			} else if (insideAutoGenerated && line.trim().isEmpty()) {
+            } else if (insideAutoGenerated && line.trim().isEmpty()) {
-				insideAutoGenerated = false;
+                insideAutoGenerated = false;
-				mergedLines.add(line);
+                mergedLines.add(line);
-				continue;
+                continue;
-			}
+            }
 
-			if (beforeFirstKey && (isCommented.apply(line) || line.trim().isEmpty())) {
+            if (beforeFirstKey && (isCommented.apply(line) || line.trim().isEmpty())) {
-				// Handle top comments and empty lines before the first key.
+                // Handle top comments and empty lines before the first key.
-				mergedLines.add(line);
+                mergedLines.add(line);
-				continue;
+                continue;
-			}
+            }
 
-			if (!key.isEmpty())
+            if (!key.isEmpty()) beforeFirstKey = false;
-				beforeFirstKey = false;
 
-			if (userKeys.contains(key)) {
+            if (userKeys.contains(key)) {
-				// If user has any version (commented or uncommented) of this key, skip the
+                // If user has any version (commented or uncommented) of this key, skip the
-				// template line
+                // template line
-				Optional<String> userValue = userLines.stream()
+                Optional<String> userValue =
-						.filter(l -> extractKey.apply(l).equalsIgnoreCase(key) && !isCommented.apply(l)).findFirst();
+                        userLines.stream()
-				if (userValue.isPresent())
+                                .filter(
-					mergedLines.add(userValue.get());
+                                        l ->
-				continue;
+                                                extractKey.apply(l).equalsIgnoreCase(key)
-			}
+                                                        && !isCommented.apply(l))
+                                .findFirst();
+                if (userValue.isPresent()) mergedLines.add(userValue.get());
+                continue;
+            }
 
-			if (isCommented.apply(line) || line.trim().isEmpty() || !userKeys.contains(key)) {
+            if (isCommented.apply(line) || line.trim().isEmpty() || !userKeys.contains(key)) {
-				mergedLines.add(line); // If line is commented, empty or key not present in user's file, retain the
+                mergedLines.add(
-										// template line
+                        line); // If line is commented, empty or key not present in user's file,
-				continue;
+                // retain the
-			}
+                // template line
-		}
+                continue;
+            }
+        }
 
-		// Add any additional uncommented user lines that are not present in the
+        // Add any additional uncommented user lines that are not present in the
-		// template
+        // template
-		for (String userLine : userLines) {
+        for (String userLine : userLines) {
-			String userKey = extractKey.apply(userLine);
+            String userKey = extractKey.apply(userLine);
-			boolean isPresentInTemplate = templateLines.stream().map(extractKey)
+            boolean isPresentInTemplate =
-					.anyMatch(templateKey -> templateKey.equalsIgnoreCase(userKey));
+                    templateLines.stream()
-			if (!isPresentInTemplate && !isCommented.apply(userLine)) {
+                            .map(extractKey)
-				mergedLines.add(userLine);
+                            .anyMatch(templateKey -> templateKey.equalsIgnoreCase(userKey));
-			}
+            if (!isPresentInTemplate && !isCommented.apply(userLine)) {
-		}
+                mergedLines.add(userLine);
-
+            }
-		Files.write(outputPath, mergedLines, StandardCharsets.UTF_8);
+        }
-	}
 
+        Files.write(outputPath, mergedLines, StandardCharsets.UTF_8);
+    }
 }

src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java

@@ -9,10 +9,14 @@ import java.util.concurrent.ConcurrentHashMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.annotation.DependsOn;
 import org.springframework.stereotype.Service;
 
 import stirling.software.SPDF.model.ApplicationProperties;
+
 @Service
+@DependsOn({"bookFormatsInstalled"})
 public class EndpointConfiguration {
     private static final Logger logger = LoggerFactory.getLogger(EndpointConfiguration.class);
     private Map<String, Boolean> endpointStatuses = new ConcurrentHashMap<>();
@@ -20,22 +24,27 @@ public class EndpointConfiguration {
 
     private final ApplicationProperties applicationProperties;
 
+    private boolean bookFormatsInstalled;
+
     @Autowired
-    public EndpointConfiguration(ApplicationProperties applicationProperties) {
+    public EndpointConfiguration(
+            ApplicationProperties applicationProperties,
+            @Qualifier("bookFormatsInstalled") boolean bookFormatsInstalled) {
         this.applicationProperties = applicationProperties;
+        this.bookFormatsInstalled = bookFormatsInstalled;
         init();
         processEnvironmentConfigs();
     }
 
     public void enableEndpoint(String endpoint) {
-    	endpointStatuses.put(endpoint, true);
+        endpointStatuses.put(endpoint, true);
     }
 
     public void disableEndpoint(String endpoint) {
-    	if(!endpointStatuses.containsKey(endpoint) || endpointStatuses.get(endpoint) !=  false) {
+        if (!endpointStatuses.containsKey(endpoint) || endpointStatuses.get(endpoint) != false) {
-	        logger.info("Disabling {}", endpoint);
+            logger.info("Disabling {}", endpoint);
-	        endpointStatuses.put(endpoint, false);
+            endpointStatuses.put(endpoint, false);
-    	}
+        }
     }
 
     public boolean isEndpointEnabled(String endpoint) {
@@ -85,7 +94,6 @@ public class EndpointConfiguration {
         addEndpointToGroup("PageOps", "overlay-pdf");
         addEndpointToGroup("PageOps", "split-pdf-by-sections");
 
-        
         // Adding endpoints to "Convert" group
         addEndpointToGroup("Convert", "pdf-to-img");
         addEndpointToGroup("Convert", "img-to-pdf");
@@ -102,7 +110,6 @@ public class EndpointConfiguration {
         addEndpointToGroup("Convert", "markdown-to-pdf");
         addEndpointToGroup("Convert", "pdf-to-csv");
 
-        
         // Adding endpoints to "Security" group
         addEndpointToGroup("Security", "add-password");
         addEndpointToGroup("Security", "remove-password");
@@ -112,7 +119,6 @@ public class EndpointConfiguration {
         addEndpointToGroup("Security", "sanitize-pdf");
         addEndpointToGroup("Security", "auto-redact");
 
-        
         // Adding endpoints to "Other" group
         addEndpointToGroup("Other", "ocr-pdf");
         addEndpointToGroup("Other", "add-image");
@@ -131,9 +137,7 @@ public class EndpointConfiguration {
         addEndpointToGroup("Other", "get-info-on-pdf");
         addEndpointToGroup("Other", "show-javascript");
 
-        
+        // CLI
-        
-        //CLI
         addEndpointToGroup("CLI", "compress-pdf");
         addEndpointToGroup("CLI", "extract-image-scans");
         addEndpointToGroup("CLI", "remove-blanks");
@@ -149,19 +153,24 @@ public class EndpointConfiguration {
         addEndpointToGroup("CLI", "ocr-pdf");
         addEndpointToGroup("CLI", "html-to-pdf");
         addEndpointToGroup("CLI", "url-to-pdf");
+        addEndpointToGroup("CLI", "book-to-pdf");
+        addEndpointToGroup("CLI", "pdf-to-book");
 
+        // Calibre
+        addEndpointToGroup("Calibre", "book-to-pdf");
+        addEndpointToGroup("Calibre", "pdf-to-book");
 
-        //python
+        // python
         addEndpointToGroup("Python", "extract-image-scans");
         addEndpointToGroup("Python", "remove-blanks");
         addEndpointToGroup("Python", "html-to-pdf");
         addEndpointToGroup("Python", "url-to-pdf");
 
-        //openCV
+        // openCV
         addEndpointToGroup("OpenCV", "extract-image-scans");
         addEndpointToGroup("OpenCV", "remove-blanks");
 
-        //LibreOffice
+        // LibreOffice
         addEndpointToGroup("LibreOffice", "repair");
         addEndpointToGroup("LibreOffice", "file-to-pdf");
         addEndpointToGroup("LibreOffice", "xlsx-to-pdf");
@@ -171,13 +180,12 @@ public class EndpointConfiguration {
         addEndpointToGroup("LibreOffice", "pdf-to-html");
         addEndpointToGroup("LibreOffice", "pdf-to-xml");
 
-        
+        // OCRmyPDF
-        //OCRmyPDF
         addEndpointToGroup("OCRmyPDF", "compress-pdf");
         addEndpointToGroup("OCRmyPDF", "pdf-to-pdfa");
         addEndpointToGroup("OCRmyPDF", "ocr-pdf");
 
-        //Java
+        // Java
         addEndpointToGroup("Java", "merge-pdfs");
         addEndpointToGroup("Java", "remove-pages");
         addEndpointToGroup("Java", "split-pdfs");
@@ -211,19 +219,19 @@ public class EndpointConfiguration {
         addEndpointToGroup("Java", "overlay-pdf");
         addEndpointToGroup("Java", "split-pdf-by-sections");
 
-        //Javascript
+        // Javascript
         addEndpointToGroup("Javascript", "pdf-organizer");
         addEndpointToGroup("Javascript", "sign");
         addEndpointToGroup("Javascript", "compare");
         addEndpointToGroup("Javascript", "adjust-contrast");
-        
-        
     }
 
     private void processEnvironmentConfigs() {
         List<String> endpointsToRemove = applicationProperties.getEndpoints().getToRemove();
         List<String> groupsToRemove = applicationProperties.getEndpoints().getGroupsToRemove();
-
+        if (!bookFormatsInstalled) {
+            groupsToRemove.add("Calibre");
+        }
         if (endpointsToRemove != null) {
             for (String endpoint : endpointsToRemove) {
                 disableEndpoint(endpoint.trim());
@@ -236,6 +244,4 @@ public class EndpointConfiguration {
             }
         }
     }
-
 }
-

src/main/java/stirling/software/SPDF/config/EndpointInterceptor.java

@@ -10,11 +10,11 @@ import jakarta.servlet.http.HttpServletResponse;
 @Component
 public class EndpointInterceptor implements HandlerInterceptor {
 
-    @Autowired
+    @Autowired private EndpointConfiguration endpointConfiguration;
-    private EndpointConfiguration endpointConfiguration;
 
     @Override
-    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
+    public boolean preHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler)
             throws Exception {
         String requestURI = request.getRequestURI();
         if (!endpointConfiguration.isEndpointEnabled(requestURI)) {

src/main/java/stirling/software/SPDF/config/MetricsConfig.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.config;
+
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 

src/main/java/stirling/software/SPDF/config/MetricsFilter.java

@@ -8,6 +8,7 @@ import org.springframework.web.filter.OncePerRequestFilter;
 
 import io.micrometer.core.instrument.Counter;
 import io.micrometer.core.instrument.MeterRegistry;
+
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
@@ -16,35 +17,48 @@ import jakarta.servlet.http.HttpServletResponse;
 @Component
 public class MetricsFilter extends OncePerRequestFilter {
 
-	private final MeterRegistry meterRegistry;
+    private final MeterRegistry meterRegistry;
 
-	@Autowired
+    @Autowired
-	public MetricsFilter(MeterRegistry meterRegistry) {
+    public MetricsFilter(MeterRegistry meterRegistry) {
-		this.meterRegistry = meterRegistry;
+        this.meterRegistry = meterRegistry;
-	}
+    }
 
-	@Override
+    @Override
-	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
+    protected void doFilterInternal(
-			throws ServletException, IOException {
+            HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
-		String uri = request.getRequestURI();
+            throws ServletException, IOException {
+        String uri = request.getRequestURI();
 
-		// System.out.println("uri="+uri + ", method=" + request.getMethod() );
+        // System.out.println("uri="+uri + ", method=" + request.getMethod() );
-		// Ignore static resources
+        // Ignore static resources
-		if (!(uri.startsWith("/js") || uri.startsWith("/v1/api-docs") || uri.endsWith("robots.txt")
+        if (!(uri.startsWith("/js")
-				|| uri.startsWith("/images")  || uri.startsWith("/images")|| uri.endsWith(".png") || uri.endsWith(".ico") || uri.endsWith(".css") || uri.endsWith(".map")
+                || uri.startsWith("/v1/api-docs")
-				|| uri.endsWith(".svg") || uri.endsWith(".js") || uri.contains("swagger")
+                || uri.endsWith("robots.txt")
-				|| uri.startsWith("/api/v1/info") || uri.startsWith("/site.webmanifest")  || uri.startsWith("/fonts") || uri.startsWith("/pdfjs") )) {
+                || uri.startsWith("/images")
+                || uri.startsWith("/images")
+                || uri.endsWith(".png")
+                || uri.endsWith(".ico")
+                || uri.endsWith(".css")
+                || uri.endsWith(".map")
+                || uri.endsWith(".svg")
+                || uri.endsWith(".js")
+                || uri.contains("swagger")
+                || uri.startsWith("/api/v1/info")
+                || uri.startsWith("/site.webmanifest")
+                || uri.startsWith("/fonts")
+                || uri.startsWith("/pdfjs"))) {
 
+            Counter counter =
+                    Counter.builder("http.requests")
+                            .tag("uri", uri)
+                            .tag("method", request.getMethod())
+                            .register(meterRegistry);
 
+            counter.increment();
+            // System.out.println("Counted");
+        }
 
-			Counter counter = Counter.builder("http.requests").tag("uri", uri).tag("method", request.getMethod())
+        filterChain.doFilter(request, response);
-					.register(meterRegistry);
+    }
-
-			counter.increment();
-			// System.out.println("Counted");
-		}
-
-		filterChain.doFilter(request, response);
-	}
-
 }

src/main/java/stirling/software/SPDF/config/OpenApiConfig.java

@@ -9,34 +9,45 @@ import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.info.Info;
 import io.swagger.v3.oas.models.security.SecurityRequirement;
 import io.swagger.v3.oas.models.security.SecurityScheme;
+
 import stirling.software.SPDF.model.ApplicationProperties;
 
 @Configuration
 public class OpenApiConfig {
 
-	@Autowired
+    @Autowired ApplicationProperties applicationProperties;
-	ApplicationProperties applicationProperties;
 
-	@Bean
+    @Bean
-	public OpenAPI customOpenAPI() {
+    public OpenAPI customOpenAPI() {
-		String version = getClass().getPackage().getImplementationVersion();
+        String version = getClass().getPackage().getImplementationVersion();
-		if (version == null) {
+        if (version == null) {
-			version = "1.0.0"; // default version if all else fails
+            version = "1.0.0"; // default version if all else fails
-		}
+        }
-
-		SecurityScheme apiKeyScheme = new SecurityScheme().type(SecurityScheme.Type.APIKEY).in(SecurityScheme.In.HEADER)
-				.name("X-API-KEY");
-		if (!applicationProperties.getSecurity().getEnableLogin()) {
-			return new OpenAPI().components(new Components())
-					.info(new Info().title("Stirling PDF API").version(version).description(
-							"API documentation for all Server-Side processing.\nPlease note some functionality might be UI only and missing from here."));
-		} else {
-			return new OpenAPI().components(new Components().addSecuritySchemes("apiKey", apiKeyScheme))
-					.info(new Info().title("Stirling PDF API").version(version).description(
-							"API documentation for all Server-Side processing.\nPlease note some functionality might be UI only and missing from here."))
-					.addSecurityItem(new SecurityRequirement().addList("apiKey"));
-		}
-
-	}
 
+        SecurityScheme apiKeyScheme =
+                new SecurityScheme()
+                        .type(SecurityScheme.Type.APIKEY)
+                        .in(SecurityScheme.In.HEADER)
+                        .name("X-API-KEY");
+        if (!applicationProperties.getSecurity().getEnableLogin()) {
+            return new OpenAPI()
+                    .components(new Components())
+                    .info(
+                            new Info()
+                                    .title("Stirling PDF API")
+                                    .version(version)
+                                    .description(
+                                            "API documentation for all Server-Side processing.\nPlease note some functionality might be UI only and missing from here."));
+        } else {
+            return new OpenAPI()
+                    .components(new Components().addSecuritySchemes("apiKey", apiKeyScheme))
+                    .info(
+                            new Info()
+                                    .title("Stirling PDF API")
+                                    .version(version)
+                                    .description(
+                                            "API documentation for all Server-Side processing.\nPlease note some functionality might be UI only and missing from here."))
+                    .addSecurityItem(new SecurityRequirement().addList("apiKey"));
+        }
+    }
 }

src/main/java/stirling/software/SPDF/config/PostStartupProcesses.java

@@ -0,0 +1,98 @@
+package stirling.software.SPDF.config;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Component;
+
+import jakarta.annotation.PostConstruct;
+import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.utils.ProcessExecutor;
+import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
+
+@Component
+public class PostStartupProcesses {
+
+    @Autowired ApplicationProperties applicationProperties;
+
+    @Autowired
+    @Qualifier("RunningInDocker")
+    private boolean runningInDocker;
+
+    @Autowired
+    @Qualifier("bookFormatsInstalled")
+    private boolean bookFormatsInstalled;
+
+    @Autowired
+    @Qualifier("htmlFormatsInstalled")
+    private boolean htmlFormatsInstalled;
+
+    private static final Logger logger = LoggerFactory.getLogger(PostStartupProcesses.class);
+
+    @PostConstruct
+    public void runInstallCommandBasedOnEnvironment() throws IOException, InterruptedException {
+        List<List<String>> commands = new ArrayList<>();
+        // Checking for DOCKER_INSTALL_BOOK_FORMATS environment variable
+        if (bookFormatsInstalled) {
+            List<String> tmpList = new ArrayList<>();
+            // Set up the timezone configuration commands
+            tmpList.addAll(
+                    Arrays.asList(
+                            "sh",
+                            "-c",
+                            "echo 'tzdata tzdata/Areas select Europe' | debconf-set-selections; "
+                                    + "echo 'tzdata tzdata/Zones/Europe select Berlin' | debconf-set-selections"));
+            commands.add(tmpList);
+
+            // Install calibre with DEBIAN_FRONTEND set to noninteractive
+            tmpList = new ArrayList<>();
+            tmpList.addAll(
+                    Arrays.asList(
+                            "sh",
+                            "-c",
+                            "DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends calibre"));
+            commands.add(tmpList);
+        }
+
+        // Checking for DOCKER_INSTALL_HTML_FORMATS environment variable
+        if (htmlFormatsInstalled) {
+            List<String> tmpList = new ArrayList<>();
+            // Add -y flag for automatic yes to prompts and --no-install-recommends to reduce size
+            tmpList.addAll(
+                    Arrays.asList(
+                            "apt-get", "install", "wkhtmltopdf", "-y", "--no-install-recommends"));
+            commands.add(tmpList);
+        }
+
+        if (!commands.isEmpty()) {
+            // Run the command
+            if (runningInDocker) {
+                List<String> tmpList = new ArrayList<>();
+                tmpList.addAll(Arrays.asList("apt-get", "update"));
+                commands.add(0, tmpList);
+
+                for (List<String> list : commands) {
+                    ProcessExecutorResult returnCode =
+                            ProcessExecutor.getInstance(ProcessExecutor.Processes.INSTALL_APP, true)
+                                    .runCommandWithOutputHandling(list);
+                    logger.info("RC for app installs {}", returnCode.getRc());
+                }
+            } else {
+
+                logger.info(
+                        "Not running inside Docker so skipping automated install process with command.");
+            }
+
+        } else {
+            if (runningInDocker) {
+                logger.info("No custom apps to install.");
+            }
+        }
+    }
+}

src/main/java/stirling/software/SPDF/config/StartupApplicationListener.java

@@ -1,6 +1,5 @@
 package stirling.software.SPDF.config;
 
-
 import java.time.LocalDateTime;
 
 import org.springframework.context.ApplicationListener;
@@ -17,4 +16,3 @@ public class StartupApplicationListener implements ApplicationListener<ContextRe
         startTime = LocalDateTime.now();
     }
 }
- 

src/main/java/stirling/software/SPDF/config/WebMvcConfig.java

@@ -9,8 +9,7 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 @Configuration
 public class WebMvcConfig implements WebMvcConfigurer {
 
-    @Autowired
+    @Autowired private EndpointInterceptor endpointInterceptor;
-    private EndpointInterceptor endpointInterceptor;
 
     @Override
     public void addInterceptors(InterceptorRegistry registry) {
@@ -22,6 +21,6 @@ public class WebMvcConfig implements WebMvcConfigurer {
         // Handler for external static resources
         registry.addResourceHandler("/**")
                 .addResourceLocations("file:customFiles/static/", "classpath:/static/");
-                //.setCachePeriod(0); // Optional: disable caching
+        // .setCachePeriod(0); // Optional: disable caching
     }
 }

src/main/java/stirling/software/SPDF/config/YamlPropertySourceFactory.java

@@ -8,16 +8,18 @@ import org.springframework.core.env.PropertiesPropertySource;
 import org.springframework.core.env.PropertySource;
 import org.springframework.core.io.support.EncodedResource;
 import org.springframework.core.io.support.PropertySourceFactory;
+
 public class YamlPropertySourceFactory implements PropertySourceFactory {
 
     @Override
     public PropertySource<?> createPropertySource(String name, EncodedResource encodedResource)
-      throws IOException {
+            throws IOException {
         YamlPropertiesFactoryBean factory = new YamlPropertiesFactoryBean();
         factory.setResources(encodedResource.getResource());
 
         Properties properties = factory.getObject();
 
-        return new PropertiesPropertySource(encodedResource.getResource().getFilename(), properties);
+        return new PropertiesPropertySource(
+                encodedResource.getResource().getFilename(), properties);
     }
 }

src/main/java/stirling/software/SPDF/config/security/CustomAuthenticationFailureHandler.java

@@ -12,11 +12,11 @@ import org.springframework.stereotype.Component;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+
 @Component
 public class CustomAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler {
 
-	@Autowired
+    @Autowired private final LoginAttemptService loginAttemptService;
-	private final LoginAttemptService loginAttemptService;
 
     @Autowired
     public CustomAuthenticationFailureHandler(LoginAttemptService loginAttemptService) {
@@ -24,24 +24,26 @@ public class CustomAuthenticationFailureHandler extends SimpleUrlAuthenticationF
     }
 
     @Override
-    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) 
+    public void onAuthenticationFailure(
-      throws IOException, ServletException {
+            HttpServletRequest request,
-    	String ip = request.getRemoteAddr();
+            HttpServletResponse response,
+            AuthenticationException exception)
+            throws IOException, ServletException {
+        String ip = request.getRemoteAddr();
         logger.error("Failed login attempt from IP: " + ip);
 
         String username = request.getParameter("username");
-        if(loginAttemptService.loginAttemptCheck(username)) {
+        if (loginAttemptService.loginAttemptCheck(username)) {
-        	setDefaultFailureUrl("/login?error=locked");
+            setDefaultFailureUrl("/login?error=locked");
 
         } else {
-	        if (exception.getClass().isAssignableFrom(BadCredentialsException.class)) {
+            if (exception.getClass().isAssignableFrom(BadCredentialsException.class)) {
-	        	setDefaultFailureUrl("/login?error=badcredentials");
+                setDefaultFailureUrl("/login?error=badcredentials");
-	        } else if (exception.getClass().isAssignableFrom(LockedException.class)) {
+            } else if (exception.getClass().isAssignableFrom(LockedException.class)) {
-	        	setDefaultFailureUrl("/login?error=locked");
+                setDefaultFailureUrl("/login?error=locked");
-	        }
+            }
         }
 
-        
         super.onAuthenticationFailure(request, response, exception);
     }
 }

src/main/java/stirling/software/SPDF/config/security/CustomAuthenticationSuccessHandler.java

@@ -15,21 +15,26 @@ import jakarta.servlet.http.HttpSession;
 import stirling.software.SPDF.utils.RequestUriUtils;
 
 @Component
-public class CustomAuthenticationSuccessHandler extends SavedRequestAwareAuthenticationSuccessHandler {
+public class CustomAuthenticationSuccessHandler
+        extends SavedRequestAwareAuthenticationSuccessHandler {
 
-    @Autowired
+    @Autowired private LoginAttemptService loginAttemptService;
-    private LoginAttemptService loginAttemptService;
 
     @Override
-    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws ServletException, IOException {
+    public void onAuthenticationSuccess(
-    	String username = request.getParameter("username");
+            HttpServletRequest request, HttpServletResponse response, Authentication authentication)
+            throws ServletException, IOException {
+        String username = request.getParameter("username");
         loginAttemptService.loginSucceeded(username);
 
-        
         // Get the saved request
         HttpSession session = request.getSession(false);
-        SavedRequest savedRequest = session != null ? (SavedRequest) session.getAttribute("SPRING_SECURITY_SAVED_REQUEST") : null;
+        SavedRequest savedRequest =
-        if (savedRequest != null && !RequestUriUtils.isStaticResource(savedRequest.getRedirectUrl())) {
+                session != null
+                        ? (SavedRequest) session.getAttribute("SPRING_SECURITY_SAVED_REQUEST")
+                        : null;
+        if (savedRequest != null
+                && !RequestUriUtils.isStaticResource(savedRequest.getRedirectUrl())) {
             // Redirect to the original destination
             super.onAuthenticationSuccess(request, response, authentication);
         } else {
@@ -37,8 +42,6 @@ public class CustomAuthenticationSuccessHandler extends SavedRequestAwareAuthent
             getRedirectStrategy().sendRedirect(request, response, "/");
         }
 
-        //super.onAuthenticationSuccess(request, response, authentication);
+        // super.onAuthenticationSuccess(request, response, authentication);
     }
-
-    
 }

src/main/java/stirling/software/SPDF/config/security/CustomUserDetailsService.java

@@ -20,33 +20,38 @@ import stirling.software.SPDF.repository.UserRepository;
 @Service
 public class CustomUserDetailsService implements UserDetailsService {
 
-    @Autowired
+    @Autowired private UserRepository userRepository;
-    private UserRepository userRepository;
 
-    @Autowired
+    @Autowired private LoginAttemptService loginAttemptService;
-    private LoginAttemptService loginAttemptService;
 
     @Override
     public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
-        User user = userRepository.findByUsername(username)
+        User user =
-            .orElseThrow(() -> new UsernameNotFoundException("No user found with username: " + username));
+                userRepository
+                        .findByUsername(username)
+                        .orElseThrow(
+                                () ->
+                                        new UsernameNotFoundException(
+                                                "No user found with username: " + username));
 
         if (loginAttemptService.isBlocked(username)) {
-            throw new LockedException("Your account has been locked due to too many failed login attempts.");
+            throw new LockedException(
+                    "Your account has been locked due to too many failed login attempts.");
         }
 
         return new org.springframework.security.core.userdetails.User(
-            user.getUsername(),
+                user.getUsername(),
-            user.getPassword(),
+                user.getPassword(),
-            user.isEnabled(),
+                user.isEnabled(),
-            true, true, true,
+                true,
-            getAuthorities(user.getAuthorities())
+                true,
-        );
+                true,
+                getAuthorities(user.getAuthorities()));
     }
 
     private Collection<? extends GrantedAuthority> getAuthorities(Set<Authority> authorities) {
         return authorities.stream()
-            .map(authority -> new SimpleGrantedAuthority(authority.getAuthority()))
+                .map(authority -> new SimpleGrantedAuthority(authority.getAuthority()))
-            .collect(Collectors.toList());
+                .collect(Collectors.toList());
     }
 }

src/main/java/stirling/software/SPDF/config/security/FirstLoginFilter.java

@@ -20,15 +20,15 @@ import stirling.software.SPDF.utils.RequestUriUtils;
 @Component
 public class FirstLoginFilter extends OncePerRequestFilter {
 
-    @Autowired
+    @Autowired @Lazy private UserService userService;
-    @Lazy
-    private UserService userService;
 
     @Override
-    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
+    protected void doFilterInternal(
-    	String method = request.getMethod();
+            HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
-    	String requestURI = request.getRequestURI(); 
+            throws ServletException, IOException {
-    	 // Check if the request is for static resources
+        String method = request.getMethod();
+        String requestURI = request.getRequestURI();
+        // Check if the request is for static resources
         boolean isStaticResource = RequestUriUtils.isStaticResource(requestURI);
 
         // If it's a static resource, just continue the filter chain and skip the logic below
@@ -40,7 +40,10 @@ public class FirstLoginFilter extends OncePerRequestFilter {
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
         if (authentication != null && authentication.isAuthenticated()) {
             Optional<User> user = userService.findByUsername(authentication.getName());
-            if ("GET".equalsIgnoreCase(method) && user.isPresent() && user.get().isFirstLogin() && !"/change-creds".equals(requestURI)) {
+            if ("GET".equalsIgnoreCase(method)
+                    && user.isPresent()
+                    && user.get().isFirstLogin()
+                    && !"/change-creds".equals(requestURI)) {
                 response.sendRedirect("/change-creds");
                 return;
             }

src/main/java/stirling/software/SPDF/config/security/IPRateLimitingFilter.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.config.security;
+
 import java.io.IOException;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -13,7 +14,8 @@ import stirling.software.SPDF.utils.RequestUriUtils;
 
 public class IPRateLimitingFilter implements Filter {
 
-    private final ConcurrentHashMap<String, AtomicInteger> requestCounts = new ConcurrentHashMap<>();
+    private final ConcurrentHashMap<String, AtomicInteger> requestCounts =
+            new ConcurrentHashMap<>();
     private final ConcurrentHashMap<String, AtomicInteger> getCounts = new ConcurrentHashMap<>();
     private final int maxRequests;
     private final int maxGetRequests;
@@ -24,38 +26,39 @@ public class IPRateLimitingFilter implements Filter {
     }
 
     @Override
-    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
-    	if (request instanceof HttpServletRequest) {
+            throws IOException, ServletException {
-	    	HttpServletRequest httpRequest = (HttpServletRequest) request;
+        if (request instanceof HttpServletRequest) {
-	        String method = httpRequest.getMethod();
+            HttpServletRequest httpRequest = (HttpServletRequest) request;
-	        String requestURI = httpRequest.getRequestURI(); 
+            String method = httpRequest.getMethod();
-	    	 // Check if the request is for static resources
+            String requestURI = httpRequest.getRequestURI();
-	        boolean isStaticResource = RequestUriUtils.isStaticResource(requestURI);
+            // Check if the request is for static resources
+            boolean isStaticResource = RequestUriUtils.isStaticResource(requestURI);
 
-	        // If it's a static resource, just continue the filter chain and skip the logic below
+            // If it's a static resource, just continue the filter chain and skip the logic below
-	        if (isStaticResource) {
+            if (isStaticResource) {
-	        	chain.doFilter(request, response);
+                chain.doFilter(request, response);
-	            return;
+                return;
-	        }
+            }
 
-	        String clientIp = request.getRemoteAddr();
+            String clientIp = request.getRemoteAddr();
-	        requestCounts.computeIfAbsent(clientIp, k -> new AtomicInteger(0));
+            requestCounts.computeIfAbsent(clientIp, k -> new AtomicInteger(0));
-	        if (!"GET".equalsIgnoreCase(method)) {
+            if (!"GET".equalsIgnoreCase(method)) {
 
-		        if (requestCounts.get(clientIp).incrementAndGet() > maxRequests) {
+                if (requestCounts.get(clientIp).incrementAndGet() > maxRequests) {
-		            // Handle limit exceeded (e.g., send error response)
+                    // Handle limit exceeded (e.g., send error response)
-		            response.getWriter().write("Rate limit exceeded");
+                    response.getWriter().write("Rate limit exceeded");
-		            return;
+                    return;
-		        }
+                }
-	        } else {
+            } else {
-	        	if (requestCounts.get(clientIp).incrementAndGet() > maxGetRequests) {
+                if (requestCounts.get(clientIp).incrementAndGet() > maxGetRequests) {
-		            // Handle limit exceeded (e.g., send error response)
+                    // Handle limit exceeded (e.g., send error response)
-		            response.getWriter().write("GET Rate limit exceeded");
+                    response.getWriter().write("GET Rate limit exceeded");
-		            return;
+                    return;
-		        }
+                }
-	        }
+            }
-    	}
+        }
-    	 chain.doFilter(request, response);
+        chain.doFilter(request, response);
     }
 
     public void resetRequestCounts() {

src/main/java/stirling/software/SPDF/config/security/InitialSecuritySetup.java

@@ -13,75 +13,76 @@ import org.springframework.stereotype.Component;
 import jakarta.annotation.PostConstruct;
 import stirling.software.SPDF.model.ApplicationProperties;
 import stirling.software.SPDF.model.Role;
+
 @Component
 public class InitialSecuritySetup {
 
-	@Autowired
+    @Autowired private UserService userService;
-	private UserService userService;
 
+    @Autowired ApplicationProperties applicationProperties;
 
-	@Autowired
+    @PostConstruct
-	ApplicationProperties applicationProperties;
+    public void init() {
+        if (!userService.hasUsers()) {
 
-	@PostConstruct
+            String initialUsername =
-	public void init() {
+                    applicationProperties.getSecurity().getInitialLogin().getUsername();
-		if (!userService.hasUsers()) {
+            String initialPassword =
+                    applicationProperties.getSecurity().getInitialLogin().getPassword();
+            if (initialUsername != null && initialPassword != null) {
+                userService.saveUser(initialUsername, initialPassword, Role.ADMIN.getRoleId());
+            } else {
+                initialUsername = "admin";
+                initialPassword = "stirling";
+                userService.saveUser(
+                        initialUsername, initialPassword, Role.ADMIN.getRoleId(), true);
+            }
+        }
+        if (!userService.usernameExists(Role.INTERNAL_API_USER.getRoleId())) {
+            userService.saveUser(
+                    Role.INTERNAL_API_USER.getRoleId(),
+                    UUID.randomUUID().toString(),
+                    Role.INTERNAL_API_USER.getRoleId());
+            userService.addApiKeyToUser(Role.INTERNAL_API_USER.getRoleId());
+        }
+    }
 
+    @PostConstruct
+    public void initSecretKey() throws IOException {
+        String secretKey = applicationProperties.getAutomaticallyGenerated().getKey();
+        if (secretKey == null || secretKey.isEmpty()) {
+            secretKey = UUID.randomUUID().toString(); // Generating a random UUID as the secret key
+            saveKeyToConfig(secretKey);
+        }
+    }
 
-			String initialUsername = applicationProperties.getSecurity().getInitialLogin().getUsername();
+    private void saveKeyToConfig(String key) throws IOException {
-			String initialPassword = applicationProperties.getSecurity().getInitialLogin().getPassword();
+        Path path = Paths.get("configs", "settings.yml"); // Target the configs/settings.yml
-			if (initialUsername != null && initialPassword != null) {
+        List<String> lines = Files.readAllLines(path);
-				userService.saveUser(initialUsername, initialPassword, Role.ADMIN.getRoleId());
+        boolean keyFound = false;
-			} else {
-				initialUsername = "admin";
-			    initialPassword = "stirling";
-				userService.saveUser(initialUsername, initialPassword, Role.ADMIN.getRoleId(), true);
-			}
-		}
-		if(!userService.usernameExists(Role.INTERNAL_API_USER.getRoleId())) {
-			userService.saveUser(Role.INTERNAL_API_USER.getRoleId(), UUID.randomUUID().toString(), Role.INTERNAL_API_USER.getRoleId());
-			userService.addApiKeyToUser(Role.INTERNAL_API_USER.getRoleId());
-		}
-	}
 
+        // Search for the existing key to replace it or place to add it
+        for (int i = 0; i < lines.size(); i++) {
+            if (lines.get(i).startsWith("AutomaticallyGenerated:")) {
+                keyFound = true;
+                if (i + 1 < lines.size() && lines.get(i + 1).trim().startsWith("key:")) {
+                    lines.set(i + 1, "  key: " + key);
+                    break;
+                } else {
+                    lines.add(i + 1, "  key: " + key);
+                    break;
+                }
+            }
+        }
 
+        // If the section doesn't exist, append it
+        if (!keyFound) {
+            lines.add("# Automatically Generated Settings (Do Not Edit Directly)");
+            lines.add("AutomaticallyGenerated:");
+            lines.add("  key: " + key);
+        }
 
-	@PostConstruct
+        // Write back to the file
-	public void initSecretKey() throws IOException {
+        Files.write(path, lines);
-		String secretKey = applicationProperties.getAutomaticallyGenerated().getKey();
+    }
-		if (secretKey == null || secretKey.isEmpty()) {
-			secretKey = UUID.randomUUID().toString(); // Generating a random UUID as the secret key
-			saveKeyToConfig(secretKey);
-		}
-	}
-
-	private void saveKeyToConfig(String key) throws IOException {
-		Path path = Paths.get("configs", "settings.yml"); // Target the configs/settings.yml
-		List<String> lines = Files.readAllLines(path);
-		boolean keyFound = false;
-
-		// Search for the existing key to replace it or place to add it
-		for (int i = 0; i < lines.size(); i++) {
-			if (lines.get(i).startsWith("AutomaticallyGenerated:")) {
-				keyFound = true;
-				if (i + 1 < lines.size() && lines.get(i + 1).trim().startsWith("key:")) {
-					lines.set(i + 1, "  key: " + key);
-					break;
-				} else {
-					lines.add(i + 1, "  key: " + key);
-					break;
-				}
-			}
-		}
-
-		// If the section doesn't exist, append it
-		if (!keyFound) {
-			lines.add("# Automatically Generated Settings (Do Not Edit Directly)");
-			lines.add("AutomaticallyGenerated:");
-			lines.add("  key: " + key);
-		}
-
-		// Write back to the file
-		Files.write(path, lines);
-	}
 }

src/main/java/stirling/software/SPDF/config/security/LoginAttemptService.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.config.security;
+
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 
@@ -12,39 +13,41 @@ import stirling.software.SPDF.model.AttemptCounter;
 @Service
 public class LoginAttemptService {
 
-	
+    @Autowired ApplicationProperties applicationProperties;
-	@Autowired
-	ApplicationProperties applicationProperties;
 
     private int MAX_ATTEMPTS;
     private long ATTEMPT_INCREMENT_TIME;
 
-    
     @PostConstruct
     public void init() {
-    	MAX_ATTEMPTS = applicationProperties.getSecurity().getLoginAttemptCount();
+        MAX_ATTEMPTS = applicationProperties.getSecurity().getLoginAttemptCount();
-    	ATTEMPT_INCREMENT_TIME = TimeUnit.MINUTES.toMillis(applicationProperties.getSecurity().getLoginResetTimeMinutes());
+        ATTEMPT_INCREMENT_TIME =
+                TimeUnit.MINUTES.toMillis(
+                        applicationProperties.getSecurity().getLoginResetTimeMinutes());
     }
 
-    private final ConcurrentHashMap<String, AttemptCounter> attemptsCache = new ConcurrentHashMap<>();
+    private final ConcurrentHashMap<String, AttemptCounter> attemptsCache =
+            new ConcurrentHashMap<>();
 
     public void loginSucceeded(String key) {
         attemptsCache.remove(key);
     }
 
     public boolean loginAttemptCheck(String key) {
-        attemptsCache.compute(key, (k, attemptCounter) -> {
+        attemptsCache.compute(
-            if (attemptCounter == null || attemptCounter.shouldReset(ATTEMPT_INCREMENT_TIME)) {
+                key,
-                return new AttemptCounter();
+                (k, attemptCounter) -> {
-            } else {
+                    if (attemptCounter == null
-                attemptCounter.increment();
+                            || attemptCounter.shouldReset(ATTEMPT_INCREMENT_TIME)) {
-                return attemptCounter;
+                        return new AttemptCounter();
-            }
+                    } else {
-        });
+                        attemptCounter.increment();
+                        return attemptCounter;
+                    }
+                });
         return attemptsCache.get(key).getAttemptCount() >= MAX_ATTEMPTS;
     }
 
-
     public boolean isBlocked(String key) {
         AttemptCounter attemptCounter = attemptsCache.get(key);
         if (attemptCounter != null) {
@@ -52,5 +55,4 @@ public class LoginAttemptService {
         }
         return false;
     }
-
 }

src/main/java/stirling/software/SPDF/config/security/RateLimitResetScheduler.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.config.security;
+
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 

src/main/java/stirling/software/SPDF/config/security/SecurityConfiguration.java

@@ -19,104 +19,112 @@ import org.springframework.security.web.savedrequest.NullRequestCache;
 import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 
 import stirling.software.SPDF.repository.JPATokenRepositoryImpl;
+
 @Configuration
 @EnableWebSecurity()
 @EnableMethodSecurity
 public class SecurityConfiguration {
 
-    @Autowired
+    @Autowired private UserDetailsService userDetailsService;
-    private UserDetailsService userDetailsService;
 
     @Bean
     public PasswordEncoder passwordEncoder() {
         return new BCryptPasswordEncoder();
     }
-    @Autowired
+
-    @Lazy
+    @Autowired @Lazy private UserService userService;
-    private UserService userService;
 
     @Autowired
     @Qualifier("loginEnabled")
     public boolean loginEnabledValue;
 
-    @Autowired
+    @Autowired private UserAuthenticationFilter userAuthenticationFilter;
-    private UserAuthenticationFilter userAuthenticationFilter;
 
+    @Autowired private LoginAttemptService loginAttemptService;
 
-
+    @Autowired private FirstLoginFilter firstLoginFilter;
-    @Autowired
-    private  LoginAttemptService loginAttemptService;
-    
-    @Autowired
-    private FirstLoginFilter firstLoginFilter;
 
     @Bean
-    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception  {
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
-    	http.addFilterBefore(userAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);
+        http.addFilterBefore(userAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);
 
-    	if(loginEnabledValue) {
+        if (loginEnabledValue) {
 
-    		http.csrf(csrf -> csrf.disable());
+            http.csrf(csrf -> csrf.disable());
-    		http.addFilterBefore(rateLimitingFilter(), UsernamePasswordAuthenticationFilter.class);
+            http.addFilterBefore(rateLimitingFilter(), UsernamePasswordAuthenticationFilter.class);
-    		http.addFilterAfter(firstLoginFilter, UsernamePasswordAuthenticationFilter.class);
+            http.addFilterAfter(firstLoginFilter, UsernamePasswordAuthenticationFilter.class);
-	        http
+            http.formLogin(
-	            .formLogin(formLogin -> formLogin
+                            formLogin ->
-	                .loginPage("/login")
+                                    formLogin
-	                .successHandler(new CustomAuthenticationSuccessHandler())
+                                            .loginPage("/login")
-	                .defaultSuccessUrl("/")
+                                            .successHandler(
-	                .failureHandler(new CustomAuthenticationFailureHandler(loginAttemptService))
+                                                    new CustomAuthenticationSuccessHandler())
-	                .permitAll()
+                                            .defaultSuccessUrl("/")
-	            ).requestCache(requestCache -> requestCache
+                                            .failureHandler(
-	                    .requestCache(new NullRequestCache())
+                                                    new CustomAuthenticationFailureHandler(
-	            	    )
+                                                            loginAttemptService))
-	            .logout(logout -> logout
+                                            .permitAll())
-	            		.logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
+                    .requestCache(requestCache -> requestCache.requestCache(new NullRequestCache()))
-	                    .logoutSuccessUrl("/login?logout=true")
+                    .logout(
-	                    .invalidateHttpSession(true)        // Invalidate session
+                            logout ->
-	                    .deleteCookies("JSESSIONID", "remember-me") 
+                                    logout.logoutRequestMatcher(
-	            ).rememberMe(rememberMeConfigurer -> rememberMeConfigurer // Use the configurator directly
+                                                    new AntPathRequestMatcher("/logout"))
-                    .key("uniqueAndSecret")
+                                            .logoutSuccessUrl("/login?logout=true")
-                    .tokenRepository(persistentTokenRepository())
+                                            .invalidateHttpSession(true) // Invalidate session
-                    .tokenValiditySeconds(1209600) // 2 weeks
+                                            .deleteCookies("JSESSIONID", "remember-me"))
-                )
+                    .rememberMe(
-	            .authorizeHttpRequests(authz -> authz
+                            rememberMeConfigurer ->
-	                    .requestMatchers(req ->  {
+                                    rememberMeConfigurer // Use the configurator directly
-	                        String uri = req.getRequestURI();
+                                            .key("uniqueAndSecret")
-	                        String contextPath = req.getContextPath();
+                                            .tokenRepository(persistentTokenRepository())
+                                            .tokenValiditySeconds(1209600) // 2 weeks
+                            )
+                    .authorizeHttpRequests(
+                            authz ->
+                                    authz.requestMatchers(
+                                                    req -> {
+                                                        String uri = req.getRequestURI();
+                                                        String contextPath = req.getContextPath();
 
-	                        // Remove the context path from the URI
+                                                        // Remove the context path from the URI
-	                        String trimmedUri = uri.startsWith(contextPath) ? uri.substring(contextPath.length()) : uri;
+                                                        String trimmedUri =
+                                                                uri.startsWith(contextPath)
+                                                                        ? uri.substring(
+                                                                                contextPath
+                                                                                        .length())
+                                                                        : uri;
+
+                                                        return trimmedUri.startsWith("/login")
+                                                                || trimmedUri.endsWith(".svg")
+                                                                || trimmedUri.startsWith(
+                                                                        "/register")
+                                                                || trimmedUri.startsWith("/error")
+                                                                || trimmedUri.startsWith("/images/")
+                                                                || trimmedUri.startsWith("/public/")
+                                                                || trimmedUri.startsWith("/css/")
+                                                                || trimmedUri.startsWith("/js/")
+                                                                || trimmedUri.startsWith(
+                                                                        "/api/v1/info/status");
+                                                    })
+                                            .permitAll()
+                                            .anyRequest()
+                                            .authenticated())
+                    .userDetailsService(userDetailsService)
+                    .authenticationProvider(authenticationProvider());
+        } else {
+            http.csrf(csrf -> csrf.disable())
+                    .authorizeHttpRequests(authz -> authz.anyRequest().permitAll());
+        }
 
-	                        return trimmedUri.startsWith("/login") || trimmedUri.endsWith(".svg") || 
-	                               trimmedUri.startsWith("/register") || trimmedUri.startsWith("/error") || 
-	                               trimmedUri.startsWith("/images/") || trimmedUri.startsWith("/public/") || 
-	                               trimmedUri.startsWith("/css/") || trimmedUri.startsWith("/js/");
-	                    }
-	                    ).permitAll()
-	                    .anyRequest().authenticated()
-	                )
-	            .userDetailsService(userDetailsService)
-	            .authenticationProvider(authenticationProvider());
-    	} else {
-    		 http.csrf(csrf -> csrf.disable())
-             .authorizeHttpRequests(authz -> authz
-                 .anyRequest().permitAll()
-             );
-    	}
         return http.build();
     }
 
-    
-
-    
     @Bean
     public IPRateLimitingFilter rateLimitingFilter() {
         int maxRequestsPerIp = 1000000; // Example limit TODO add config level
         return new IPRateLimitingFilter(maxRequestsPerIp, maxRequestsPerIp);
     }
 
- 
-    
     @Bean
     public DaoAuthenticationProvider authenticationProvider() {
         DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
@@ -129,8 +137,4 @@ public class SecurityConfiguration {
     public PersistentTokenRepository persistentTokenRepository() {
         return new JPATokenRepositoryImpl();
     }
-    
-
-    
 }
-

src/main/java/stirling/software/SPDF/config/security/UserAuthenticationFilter.java

@@ -19,25 +19,22 @@ import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import stirling.software.SPDF.model.ApiKeyAuthenticationToken;
+
 @Component
 public class UserAuthenticationFilter extends OncePerRequestFilter {
 
-    @Autowired
+    @Autowired private UserDetailsService userDetailsService;
-    private UserDetailsService userDetailsService;
-
-    @Autowired
-    @Lazy
-    private UserService userService;
 
+    @Autowired @Lazy private UserService userService;
 
     @Autowired
     @Qualifier("loginEnabled")
     public boolean loginEnabledValue;
 
     @Override
-    protected void doFilterInternal(HttpServletRequest request,
+    protected void doFilterInternal(
-                                    HttpServletResponse response,
+            HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
-                                    FilterChain filterChain) throws ServletException, IOException {
+            throws ServletException, IOException {
 
         if (!loginEnabledValue) {
             // If login is not enabled, just pass all requests without authentication
@@ -52,15 +49,17 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
             String apiKey = request.getHeader("X-API-Key");
             if (apiKey != null && !apiKey.trim().isEmpty()) {
                 try {
-                    // Use API key to authenticate. This requires you to have an authentication provider for API keys.
+                    // Use API key to authenticate. This requires you to have an authentication
-                	UserDetails userDetails = userService.loadUserByApiKey(apiKey);
+                    // provider for API keys.
-                	if(userDetails == null)
+                    UserDetails userDetails = userService.loadUserByApiKey(apiKey);
-                	{
+                    if (userDetails == null) {
-                		response.setStatus(HttpStatus.UNAUTHORIZED.value());
+                        response.setStatus(HttpStatus.UNAUTHORIZED.value());
                         response.getWriter().write("Invalid API Key.");
                         return;
-                	}
+                    }
-                    authentication = new ApiKeyAuthenticationToken(userDetails, apiKey, userDetails.getAuthorities());
+                    authentication =
+                            new ApiKeyAuthenticationToken(
+                                    userDetails, apiKey, userDetails.getAuthorities());
                     SecurityContextHolder.getContext().setAuthentication(authentication);
                 } catch (AuthenticationException e) {
                     // If API key authentication fails, deny the request
@@ -73,16 +72,18 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
 
         // If we still don't have any authentication, deny the request
         if (authentication == null || !authentication.isAuthenticated()) {
-        	String method = request.getMethod();
+            String method = request.getMethod();
-        	String contextPath = request.getContextPath();
+            String contextPath = request.getContextPath();
 
-        	if ("GET".equalsIgnoreCase(method) && !  (contextPath + "/login").equals(requestURI)) {
+            if ("GET".equalsIgnoreCase(method) && !(contextPath + "/login").equals(requestURI)) {
-        		 response.sendRedirect(contextPath + "/login");  // redirect to the login page
+                response.sendRedirect(contextPath + "/login"); // redirect to the login page
-        	     return;
+                return;
             } else {
-	            response.setStatus(HttpStatus.UNAUTHORIZED.value());
+                response.setStatus(HttpStatus.UNAUTHORIZED.value());
-	            response.getWriter().write("Authentication required. Please provide a X-API-KEY in request header.\nThis is found in Settings -> Account Settings -> API Key\nAlternativly you can disable authentication if this is unexpected");
+                response.getWriter()
-	            return;
+                        .write(
+                                "Authentication required. Please provide a X-API-KEY in request header.\nThis is found in Settings -> Account Settings -> API Key\nAlternativly you can disable authentication if this is unexpected");
+                return;
             }
         }
 
@@ -94,15 +95,16 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
         String uri = request.getRequestURI();
         String contextPath = request.getContextPath();
         String[] permitAllPatterns = {
-        		contextPath + "/login",
+            contextPath + "/login",
-        		contextPath + "/register",
+            contextPath + "/register",
-        		contextPath + "/error",
+            contextPath + "/error",
-        		contextPath + "/images/",
+            contextPath + "/images/",
-        		contextPath + "/public/",
+            contextPath + "/public/",
-        		contextPath + "/css/",
+            contextPath + "/css/",
-        		contextPath + "/js/",
+            contextPath + "/js/",
-        		contextPath +  "/pdfjs/",
+            contextPath + "/pdfjs/",
-        		contextPath +  "/site.webmanifest"
+            contextPath + "/api/v1/info/status",
+            contextPath + "/site.webmanifest"
         };
 
         for (String pattern : permitAllPatterns) {
@@ -113,5 +115,4 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
 
         return false;
     }
-
 }

src/main/java/stirling/software/SPDF/config/security/UserBasedRateLimitingFilter.java

@@ -20,28 +20,29 @@ import io.github.bucket4j.Bandwidth;
 import io.github.bucket4j.Bucket;
 import io.github.bucket4j.ConsumptionProbe;
 import io.github.bucket4j.Refill;
+
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import stirling.software.SPDF.model.Role;
+
 @Component
 public class UserBasedRateLimitingFilter extends OncePerRequestFilter {
 
-	private final Map<String, Bucket> apiBuckets = new ConcurrentHashMap<>();
+    private final Map<String, Bucket> apiBuckets = new ConcurrentHashMap<>();
     private final Map<String, Bucket> webBuckets = new ConcurrentHashMap<>();
 
-    @Autowired
+    @Autowired private UserDetailsService userDetailsService;
-    private UserDetailsService userDetailsService;
 
     @Autowired
     @Qualifier("rateLimit")
     public boolean rateLimit;
 
     @Override
-    protected void doFilterInternal(HttpServletRequest request,
+    protected void doFilterInternal(
-                                    HttpServletResponse response,
+            HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
-                                    FilterChain filterChain) throws ServletException, IOException {
+            throws ServletException, IOException {
         if (!rateLimit) {
             // If rateLimit is not enabled, just pass all requests without rate limiting
             filterChain.doFilter(request, response);
@@ -60,7 +61,8 @@ public class UserBasedRateLimitingFilter extends OncePerRequestFilter {
         // Check for API key in the request headers
         String apiKey = request.getHeader("X-API-Key");
         if (apiKey != null && !apiKey.trim().isEmpty()) {
-            identifier = "API_KEY_" + apiKey; // Prefix to distinguish between API keys and usernames
+            identifier =
+                    "API_KEY_" + apiKey; // Prefix to distinguish between API keys and usernames
         } else {
             Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
             if (authentication != null && authentication.isAuthenticated()) {
@@ -74,14 +76,27 @@ public class UserBasedRateLimitingFilter extends OncePerRequestFilter {
             identifier = request.getRemoteAddr();
         }
 
-        Role userRole = getRoleFromAuthentication(SecurityContextHolder.getContext().getAuthentication());
+        Role userRole =
+                getRoleFromAuthentication(SecurityContextHolder.getContext().getAuthentication());
 
         if (request.getHeader("X-API-Key") != null) {
             // It's an API call
-            processRequest(userRole.getApiCallsPerDay(), identifier, apiBuckets, request, response, filterChain);
+            processRequest(
+                    userRole.getApiCallsPerDay(),
+                    identifier,
+                    apiBuckets,
+                    request,
+                    response,
+                    filterChain);
         } else {
             // It's a Web UI call
-            processRequest(userRole.getWebCallsPerDay(), identifier, webBuckets, request, response, filterChain);
+            processRequest(
+                    userRole.getWebCallsPerDay(),
+                    identifier,
+                    webBuckets,
+                    request,
+                    response,
+                    filterChain);
         }
     }
 
@@ -98,8 +113,13 @@ public class UserBasedRateLimitingFilter extends OncePerRequestFilter {
         throw new IllegalStateException("User does not have a valid role.");
     }
 
-    private void processRequest(int limitPerDay, String identifier, Map<String, Bucket> buckets,
+    private void processRequest(
-                                HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
+            int limitPerDay,
+            String identifier,
+            Map<String, Bucket> buckets,
+            HttpServletRequest request,
+            HttpServletResponse response,
+            FilterChain filterChain)
             throws IOException, ServletException {
         Bucket userBucket = buckets.computeIfAbsent(identifier, k -> createUserBucket(limitPerDay));
         ConsumptionProbe probe = userBucket.tryConsumeAndReturnRemaining(1);
@@ -116,10 +136,8 @@ public class UserBasedRateLimitingFilter extends OncePerRequestFilter {
     }
 
     private Bucket createUserBucket(int limitPerDay) {
-        Bandwidth limit = Bandwidth.classic(limitPerDay, Refill.intervally(limitPerDay, Duration.ofDays(1)));
+        Bandwidth limit =
+                Bandwidth.classic(limitPerDay, Refill.intervally(limitPerDay, Duration.ofDays(1)));
         return Bucket.builder().addLimit(limit).build();
     }
 }
-
-
-

src/main/java/stirling/software/SPDF/config/security/UserService.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.config.security;
+
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
@@ -21,14 +22,13 @@ import stirling.software.SPDF.model.Authority;
 import stirling.software.SPDF.model.Role;
 import stirling.software.SPDF.model.User;
 import stirling.software.SPDF.repository.UserRepository;
+
 @Service
-public class UserService  implements UserServiceInterface{
+public class UserService implements UserServiceInterface {
 
-    @Autowired
+    @Autowired private UserRepository userRepository;
-    private UserRepository userRepository;
 
-    @Autowired
+    @Autowired private PasswordEncoder passwordEncoder;
-    private PasswordEncoder passwordEncoder;
 
     public Authentication getAuthentication(String apiKey) {
         User user = getUserByApiKey(apiKey);
@@ -38,19 +38,17 @@ public class UserService  implements UserServiceInterface{
 
         // Convert the user into an Authentication object
         return new UsernamePasswordAuthenticationToken(
-            user,                       // principal (typically the user)
+                user, // principal (typically the user)
-            null,                       // credentials (we don't expose the password or API key here)
+                null, // credentials (we don't expose the password or API key here)
-            getAuthorities(user)        // user's authorities (roles/permissions)
+                getAuthorities(user) // user's authorities (roles/permissions)
-        );
+                );
     }
 
     private Collection<? extends GrantedAuthority> getAuthorities(User user) {
         // Convert each Authority object into a SimpleGrantedAuthority object.
-    	return user.getAuthorities().stream()
+        return user.getAuthorities().stream()
-    		    .map((Authority authority) -> new SimpleGrantedAuthority(authority.getAuthority()))
+                .map((Authority authority) -> new SimpleGrantedAuthority(authority.getAuthority()))
-    		    .collect(Collectors.toList());
+                .collect(Collectors.toList());
-
-
     }
 
     private String generateApiKey() {
@@ -62,8 +60,10 @@ public class UserService  implements UserServiceInterface{
     }
 
     public User addApiKeyToUser(String username) {
-        User user = userRepository.findByUsername(username)
+        User user =
-            .orElseThrow(() -> new UsernameNotFoundException("User not found"));
+                userRepository
+                        .findByUsername(username)
+                        .orElseThrow(() -> new UsernameNotFoundException("User not found"));
 
         user.setApiKey(generateApiKey());
         return userRepository.save(user);
@@ -74,8 +74,10 @@ public class UserService  implements UserServiceInterface{
     }
 
     public String getApiKeyForUser(String username) {
-        User user = userRepository.findByUsername(username)
+        User user =
-            .orElseThrow(() -> new UsernameNotFoundException("User not found"));
+                userRepository
+                        .findByUsername(username)
+                        .orElseThrow(() -> new UsernameNotFoundException("User not found"));
         return user.getApiKey();
     }
 
@@ -93,15 +95,13 @@ public class UserService  implements UserServiceInterface{
             User user = userOptional;
             // Convert your User entity to a UserDetails object with authorities
             return new org.springframework.security.core.userdetails.User(
-                user.getUsername(),
+                    user.getUsername(),
-                user.getPassword(), // you might not need this for API key auth
+                    user.getPassword(), // you might not need this for API key auth
-                getAuthorities(user)
+                    getAuthorities(user));
-            );
         }
-        return null;  // or throw an exception
+        return null; // or throw an exception
     }
 
-
     public boolean validateApiKeyForUser(String username, String apiKey) {
         Optional<User> userOpt = userRepository.findByUsername(username);
         return userOpt.isPresent() && userOpt.get().getApiKey().equals(apiKey);
@@ -136,15 +136,15 @@ public class UserService  implements UserServiceInterface{
     }
 
     public void deleteUser(String username) {
-    	 Optional<User> userOpt = userRepository.findByUsername(username);
+        Optional<User> userOpt = userRepository.findByUsername(username);
-         if (userOpt.isPresent()) {
+        if (userOpt.isPresent()) {
-        	 for (Authority authority : userOpt.get().getAuthorities()) {
+            for (Authority authority : userOpt.get().getAuthorities()) {
-	             if (authority.getAuthority().equals(Role.INTERNAL_API_USER.getRoleId())) {
+                if (authority.getAuthority().equals(Role.INTERNAL_API_USER.getRoleId())) {
-	                 return;
+                    return;
-	             }
+                }
-	         }
+            }
-        	 userRepository.delete(userOpt.get());
+            userRepository.delete(userOpt.get());
-         }
+        }
     }
 
     public boolean usernameExists(String username) {
@@ -161,8 +161,8 @@ public class UserService  implements UserServiceInterface{
             User user = userOpt.get();
             Map<String, String> settingsMap = user.getSettings();
 
-            if(settingsMap == null) {
+            if (settingsMap == null) {
-                settingsMap = new HashMap<String,String>();
+                settingsMap = new HashMap<String, String>();
             }
             settingsMap.clear();
             settingsMap.putAll(updates);
@@ -191,7 +191,6 @@ public class UserService  implements UserServiceInterface{
         userRepository.save(user);
     }
 
-    
     public boolean isPasswordCorrect(User user, String currentPassword) {
         return passwordEncoder.matches(currentPassword, user.getPassword());
     }

src/main/java/stirling/software/SPDF/controller/api/CropController.java

@@ -1,13 +1,14 @@
 package stirling.software.SPDF.controller.api;
 
-import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.LayerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.PDPageContentStream.AppendMode;
 import org.apache.pdfbox.pdmodel.common.PDRectangle;
 import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.slf4j.Logger;
@@ -20,6 +21,7 @@ import org.springframework.web.bind.annotation.RestController;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.general.CropPdfForm;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -28,59 +30,61 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "General", description = "General APIs")
 public class CropController {
 
-	private static final Logger logger = LoggerFactory.getLogger(CropController.class);
+    private static final Logger logger = LoggerFactory.getLogger(CropController.class);
 
-	@PostMapping(value = "/crop", consumes = "multipart/form-data")
+    @PostMapping(value = "/crop", consumes = "multipart/form-data")
-	@Operation(summary = "Crops a PDF document", description = "This operation takes an input PDF file and crops it according to the given coordinates. Input:PDF Output:PDF Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> cropPdf(@ModelAttribute CropPdfForm form)
+            summary = "Crops a PDF document",
-			throws IOException {
+            description =
+                    "This operation takes an input PDF file and crops it according to the given coordinates. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> cropPdf(@ModelAttribute CropPdfForm form) throws IOException {
+        PDDocument sourceDocument = Loader.loadPDF(form.getFileInput().getBytes());
 
+        PDDocument newDocument = new PDDocument();
 
+        int totalPages = sourceDocument.getNumberOfPages();
 
+        LayerUtility layerUtility = new LayerUtility(newDocument);
 
-PDDocument sourceDocument = PDDocument.load(new ByteArrayInputStream(form.getFileInput().getBytes()));
+        for (int i = 0; i < totalPages; i++) {
+            PDPage sourcePage = sourceDocument.getPage(i);
 
-PDDocument newDocument = new PDDocument();
+            // Create a new page with the size of the source page
+            PDPage newPage = new PDPage(sourcePage.getMediaBox());
+            newDocument.addPage(newPage);
+            PDPageContentStream contentStream =
+                    new PDPageContentStream(newDocument, newPage, AppendMode.OVERWRITE, true, true);
 
-int totalPages = sourceDocument.getNumberOfPages();
+            // Import the source page as a form XObject
+            PDFormXObject formXObject = layerUtility.importPageAsForm(sourceDocument, i);
 
-LayerUtility layerUtility = new LayerUtility(newDocument);
+            contentStream.saveGraphicsState();
 
-for (int i = 0; i < totalPages; i++) {
+            // Define the crop area
-    PDPage sourcePage = sourceDocument.getPage(i);
+            contentStream.addRect(form.getX(), form.getY(), form.getWidth(), form.getHeight());
+            contentStream.clip();
 
-    // Create a new page with the size of the source page
+            // Draw the entire formXObject
-    PDPage newPage = new PDPage(sourcePage.getMediaBox());
+            contentStream.drawForm(formXObject);
-    newDocument.addPage(newPage);
-    PDPageContentStream contentStream = new PDPageContentStream(newDocument, newPage);
 
-    // Import the source page as a form XObject
+            contentStream.restoreGraphicsState();
-    PDFormXObject formXObject = layerUtility.importPageAsForm(sourceDocument, i);
 
-    contentStream.saveGraphicsState();
+            contentStream.close();
 
-    // Define the crop area
+            // Now, set the new page's media box to the cropped size
-    contentStream.addRect(form.getX(), form.getY(), form.getWidth(), form.getHeight());
+            newPage.setMediaBox(
-    contentStream.clip();
+                    new PDRectangle(form.getX(), form.getY(), form.getWidth(), form.getHeight()));
+        }
 
-    // Draw the entire formXObject
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-    contentStream.drawForm(formXObject);
+        newDocument.save(baos);
-
+        newDocument.close();
-    contentStream.restoreGraphicsState();
+        sourceDocument.close();
-
-    contentStream.close();
-    
-    // Now, set the new page's media box to the cropped size
-    newPage.setMediaBox(new PDRectangle(form.getX(), form.getY(), form.getWidth(), form.getHeight()));
-}
-
-ByteArrayOutputStream baos = new ByteArrayOutputStream();
-newDocument.save(baos);
-newDocument.close();
-sourceDocument.close();
-
-byte[] pdfContent = baos.toByteArray();
-return WebResponseUtils.bytesToWebResponse(pdfContent, form.getFileInput().getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_cropped.pdf");
-	}
 
+        byte[] pdfContent = baos.toByteArray();
+        return WebResponseUtils.bytesToWebResponse(
+                pdfContent,
+                form.getFileInput().getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                        + "_cropped.pdf");
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/MergeController.java

@@ -1,8 +1,17 @@
 package stirling.software.SPDF.controller.api;
 
-import io.swagger.v3.oas.annotations.Operation;
+import java.io.ByteArrayOutputStream;
-import io.swagger.v3.oas.annotations.tags.Tag;
+import java.io.File;
-import org.apache.pdfbox.io.MemoryUsageSetting;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.List;
+
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.PDFMergerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -14,18 +23,13 @@ import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
-import stirling.software.SPDF.model.api.general.MergePdfsRequest;
-import stirling.software.SPDF.utils.WebResponseUtils;
 
-import java.io.ByteArrayInputStream;
+import io.swagger.v3.oas.annotations.Operation;
-import java.io.ByteArrayOutputStream;
+import io.swagger.v3.oas.annotations.tags.Tag;
-import java.io.IOException;
+
-import java.nio.file.Files;
+import stirling.software.SPDF.model.api.general.MergePdfsRequest;
-import java.nio.file.Paths;
+import stirling.software.SPDF.utils.GeneralUtils;
-import java.nio.file.attribute.BasicFileAttributes;
+import stirling.software.SPDF.utils.WebResponseUtils;
-import java.util.Arrays;
-import java.util.Comparator;
-import java.util.List;
 
 @RestController
 @RequestMapping("/api/v1/general")
@@ -34,7 +38,6 @@ public class MergeController {
 
     private static final Logger logger = LoggerFactory.getLogger(MergeController.class);
 
-
     private PDDocument mergeDocuments(List<PDDocument> documents) throws IOException {
         PDDocument mergedDoc = new PDDocument();
         for (PDDocument doc : documents) {
@@ -52,27 +55,39 @@ public class MergeController {
             case "byDateModified":
                 return (file1, file2) -> {
                     try {
-                        BasicFileAttributes attr1 = Files.readAttributes(Paths.get(file1.getOriginalFilename()), BasicFileAttributes.class);
+                        BasicFileAttributes attr1 =
-                        BasicFileAttributes attr2 = Files.readAttributes(Paths.get(file2.getOriginalFilename()), BasicFileAttributes.class);
+                                Files.readAttributes(
+                                        Paths.get(file1.getOriginalFilename()),
+                                        BasicFileAttributes.class);
+                        BasicFileAttributes attr2 =
+                                Files.readAttributes(
+                                        Paths.get(file2.getOriginalFilename()),
+                                        BasicFileAttributes.class);
                         return attr1.lastModifiedTime().compareTo(attr2.lastModifiedTime());
                     } catch (IOException e) {
-                        return 0;  // If there's an error, treat them as equal
+                        return 0; // If there's an error, treat them as equal
                     }
                 };
             case "byDateCreated":
                 return (file1, file2) -> {
                     try {
-                        BasicFileAttributes attr1 = Files.readAttributes(Paths.get(file1.getOriginalFilename()), BasicFileAttributes.class);
+                        BasicFileAttributes attr1 =
-                        BasicFileAttributes attr2 = Files.readAttributes(Paths.get(file2.getOriginalFilename()), BasicFileAttributes.class);
+                                Files.readAttributes(
+                                        Paths.get(file1.getOriginalFilename()),
+                                        BasicFileAttributes.class);
+                        BasicFileAttributes attr2 =
+                                Files.readAttributes(
+                                        Paths.get(file2.getOriginalFilename()),
+                                        BasicFileAttributes.class);
                         return attr1.creationTime().compareTo(attr2.creationTime());
                     } catch (IOException e) {
-                        return 0;  // If there's an error, treat them as equal
+                        return 0; // If there's an error, treat them as equal
                     }
                 };
             case "byPDFTitle":
                 return (file1, file2) -> {
-                    try (PDDocument doc1 = PDDocument.load(file1.getInputStream());
+                    try (PDDocument doc1 = Loader.loadPDF(file1.getBytes());
-                         PDDocument doc2 = PDDocument.load(file2.getInputStream())) {
+                            PDDocument doc2 = Loader.loadPDF(file2.getBytes())) {
                         String title1 = doc1.getDocumentInformation().getTitle();
                         String title2 = doc2.getDocumentInformation().getTitle();
                         return title1.compareTo(title2);
@@ -82,14 +97,18 @@ public class MergeController {
                 };
             case "orderProvided":
             default:
-                return (file1, file2) -> 0;  // Default is the order provided
+                return (file1, file2) -> 0; // Default is the order provided
         }
     }
 
     @PostMapping(consumes = "multipart/form-data", value = "/merge-pdfs")
-    @Operation(summary = "Merge multiple PDF files into one",
+    @Operation(
-            description = "This endpoint merges multiple PDF files into a single PDF file. The merged file will contain all pages from the input files in the order they were provided. Input:PDF Output:PDF Type:MISO")
+            summary = "Merge multiple PDF files into one",
-    public ResponseEntity<byte[]> mergePdfs(@ModelAttribute MergePdfsRequest form) throws IOException {
+            description =
+                    "This endpoint merges multiple PDF files into a single PDF file. The merged file will contain all pages from the input files in the order they were provided. Input:PDF Output:PDF Type:MISO")
+    public ResponseEntity<byte[]> mergePdfs(@ModelAttribute MergePdfsRequest form)
+            throws IOException {
+        List<File> filesToDelete = new ArrayList<File>();
         try {
             MultipartFile[] files = form.getFileInput();
             Arrays.sort(files, getSortComparator(form.getSortType()));
@@ -97,18 +116,27 @@ public class MergeController {
             PDFMergerUtility mergedDoc = new PDFMergerUtility();
             ByteArrayOutputStream docOutputstream = new ByteArrayOutputStream();
 
-            for (MultipartFile file : files) {
+            for (MultipartFile multipartFile : files) {
-                mergedDoc.addSource(new ByteArrayInputStream(file.getBytes()));
+                File tempFile = GeneralUtils.convertMultipartFileToFile(multipartFile);
+                filesToDelete.add(tempFile);
+                mergedDoc.addSource(tempFile);
             }
 
-            mergedDoc.setDestinationFileName(files[0].getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_merged.pdf");
+            mergedDoc.setDestinationFileName(
+                    files[0].getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_merged.pdf");
             mergedDoc.setDestinationStream(docOutputstream);
-            mergedDoc.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());
 
-            return WebResponseUtils.bytesToWebResponse(docOutputstream.toByteArray(), mergedDoc.getDestinationFileName());
+            mergedDoc.mergeDocuments(null);
+
+            return WebResponseUtils.bytesToWebResponse(
+                    docOutputstream.toByteArray(), mergedDoc.getDestinationFileName());
         } catch (Exception ex) {
             logger.error("Error in merge pdf process", ex);
-           throw ex;
+            throw ex;
+        } finally {
+            for (File file : filesToDelete) {
+                file.delete();
+            }
         }
     }
 }

src/main/java/stirling/software/SPDF/controller/api/MultiPageLayoutController.java

@@ -1,10 +1,10 @@
 package stirling.software.SPDF.controller.api;
 
-
 import java.awt.Color;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.LayerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -23,6 +23,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.general.MergeMultiplePagesRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -31,94 +32,110 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "General", description = "General APIs")
 public class MultiPageLayoutController {
 
-	private static final Logger logger = LoggerFactory.getLogger(MultiPageLayoutController.class);
+    private static final Logger logger = LoggerFactory.getLogger(MultiPageLayoutController.class);
 
-	@PostMapping(value = "/multi-page-layout", consumes = "multipart/form-data")
+    @PostMapping(value = "/multi-page-layout", consumes = "multipart/form-data")
-	@Operation(
+    @Operation(
-	    summary = "Merge multiple pages of a PDF document into a single page",
+            summary = "Merge multiple pages of a PDF document into a single page",
-	    description = "This operation takes an input PDF file and the number of pages to merge into a single sheet in the output PDF file. Input:PDF Output:PDF Type:SISO"
+            description =
-	)
+                    "This operation takes an input PDF file and the number of pages to merge into a single sheet in the output PDF file. Input:PDF Output:PDF Type:SISO")
-	public ResponseEntity<byte[]> mergeMultiplePagesIntoOne(@ModelAttribute MergeMultiplePagesRequest request)
+    public ResponseEntity<byte[]> mergeMultiplePagesIntoOne(
-	        throws IOException {
+            @ModelAttribute MergeMultiplePagesRequest request) throws IOException {
 
-	    int pagesPerSheet = request.getPagesPerSheet();
+        int pagesPerSheet = request.getPagesPerSheet();
-	    MultipartFile file = request.getFileInput();
+        MultipartFile file = request.getFileInput();
-	    boolean addBorder = request.isAddBorder();
+        boolean addBorder = request.isAddBorder();
 
-	    if (pagesPerSheet != 2 && pagesPerSheet != 3 && pagesPerSheet != (int) Math.sqrt(pagesPerSheet) * Math.sqrt(pagesPerSheet)) {
+        if (pagesPerSheet != 2
-	        throw new IllegalArgumentException("pagesPerSheet must be 2, 3 or a perfect square");
+                && pagesPerSheet != 3
-	    }
+                && pagesPerSheet != (int) Math.sqrt(pagesPerSheet) * Math.sqrt(pagesPerSheet)) {
+            throw new IllegalArgumentException("pagesPerSheet must be 2, 3 or a perfect square");
+        }
 
-	    int cols = pagesPerSheet == 2 || pagesPerSheet == 3 ? pagesPerSheet : (int) Math.sqrt(pagesPerSheet);
+        int cols =
-	    int rows = pagesPerSheet == 2 || pagesPerSheet == 3 ? 1 : (int) Math.sqrt(pagesPerSheet);
+                pagesPerSheet == 2 || pagesPerSheet == 3
+                        ? pagesPerSheet
+                        : (int) Math.sqrt(pagesPerSheet);
+        int rows = pagesPerSheet == 2 || pagesPerSheet == 3 ? 1 : (int) Math.sqrt(pagesPerSheet);
 
-	    PDDocument sourceDocument = PDDocument.load(file.getInputStream());
+        PDDocument sourceDocument = Loader.loadPDF(file.getBytes());
-	    PDDocument newDocument = new PDDocument();
+        PDDocument newDocument = new PDDocument();
-	    PDPage newPage = new PDPage(PDRectangle.A4);
+        PDPage newPage = new PDPage(PDRectangle.A4);
-	    newDocument.addPage(newPage);
+        newDocument.addPage(newPage);
 
-	    int totalPages = sourceDocument.getNumberOfPages();
+        int totalPages = sourceDocument.getNumberOfPages();
-	    float cellWidth = newPage.getMediaBox().getWidth() / cols;
+        float cellWidth = newPage.getMediaBox().getWidth() / cols;
-	    float cellHeight = newPage.getMediaBox().getHeight() / rows;
+        float cellHeight = newPage.getMediaBox().getHeight() / rows;
 
-	    PDPageContentStream contentStream = new PDPageContentStream(newDocument, newPage, PDPageContentStream.AppendMode.APPEND, true, true);
+        PDPageContentStream contentStream =
-	    LayerUtility layerUtility = new LayerUtility(newDocument);
+                new PDPageContentStream(
+                        newDocument, newPage, PDPageContentStream.AppendMode.APPEND, true, true);
+        LayerUtility layerUtility = new LayerUtility(newDocument);
 
-	    float borderThickness = 1.5f; // Specify border thickness as required
+        float borderThickness = 1.5f; // Specify border thickness as required
-	    contentStream.setLineWidth(borderThickness);
+        contentStream.setLineWidth(borderThickness);
-	    contentStream.setStrokingColor(Color.BLACK);
+        contentStream.setStrokingColor(Color.BLACK);
 
-	    for (int i = 0; i < totalPages; i++) {
+        for (int i = 0; i < totalPages; i++) {
-	        if (i != 0 && i % pagesPerSheet == 0) {
+            if (i != 0 && i % pagesPerSheet == 0) {
-	            // Close the current content stream and create a new page and content stream
+                // Close the current content stream and create a new page and content stream
-	            contentStream.close();
+                contentStream.close();
-	            newPage = new PDPage(PDRectangle.A4);
+                newPage = new PDPage(PDRectangle.A4);
-	            newDocument.addPage(newPage);
+                newDocument.addPage(newPage);
-	            contentStream = new PDPageContentStream(newDocument, newPage, PDPageContentStream.AppendMode.APPEND, true, true);
+                contentStream =
-	        }
+                        new PDPageContentStream(
+                                newDocument,
+                                newPage,
+                                PDPageContentStream.AppendMode.APPEND,
+                                true,
+                                true);
+            }
 
-	        PDPage sourcePage = sourceDocument.getPage(i);
+            PDPage sourcePage = sourceDocument.getPage(i);
-	        PDRectangle rect = sourcePage.getMediaBox();
+            PDRectangle rect = sourcePage.getMediaBox();
-	        float scaleWidth = cellWidth / rect.getWidth();
+            float scaleWidth = cellWidth / rect.getWidth();
-	        float scaleHeight = cellHeight / rect.getHeight();
+            float scaleHeight = cellHeight / rect.getHeight();
-	        float scale = Math.min(scaleWidth, scaleHeight);
+            float scale = Math.min(scaleWidth, scaleHeight);
 
-	        int adjustedPageIndex = i % pagesPerSheet;  // This will reset the index for every new page
+            int adjustedPageIndex =
-	        int rowIndex = adjustedPageIndex / cols;
+                    i % pagesPerSheet; // This will reset the index for every new page
-	        int colIndex = adjustedPageIndex % cols;
+            int rowIndex = adjustedPageIndex / cols;
+            int colIndex = adjustedPageIndex % cols;
 
-	        float x = colIndex * cellWidth + (cellWidth - rect.getWidth() * scale) / 2;
+            float x = colIndex * cellWidth + (cellWidth - rect.getWidth() * scale) / 2;
-	        float y = newPage.getMediaBox().getHeight() - ((rowIndex + 1) * cellHeight - (cellHeight - rect.getHeight() * scale) / 2);
+            float y =
+                    newPage.getMediaBox().getHeight()
+                            - ((rowIndex + 1) * cellHeight
+                                    - (cellHeight - rect.getHeight() * scale) / 2);
 
-	        contentStream.saveGraphicsState();
+            contentStream.saveGraphicsState();
-	        contentStream.transform(Matrix.getTranslateInstance(x, y));
+            contentStream.transform(Matrix.getTranslateInstance(x, y));
-	        contentStream.transform(Matrix.getScaleInstance(scale, scale));
+            contentStream.transform(Matrix.getScaleInstance(scale, scale));
 
-	        PDFormXObject formXObject = layerUtility.importPageAsForm(sourceDocument, i);
+            PDFormXObject formXObject = layerUtility.importPageAsForm(sourceDocument, i);
-	        contentStream.drawForm(formXObject);
+            contentStream.drawForm(formXObject);
 
-	        contentStream.restoreGraphicsState();
+            contentStream.restoreGraphicsState();
 
-	        if(addBorder) {
+            if (addBorder) {
-		        // Draw border around each page
+                // Draw border around each page
-		        float borderX = colIndex * cellWidth;
+                float borderX = colIndex * cellWidth;
-		        float borderY = newPage.getMediaBox().getHeight() - (rowIndex + 1) * cellHeight;
+                float borderY = newPage.getMediaBox().getHeight() - (rowIndex + 1) * cellHeight;
-		        contentStream.addRect(borderX, borderY, cellWidth, cellHeight);
+                contentStream.addRect(borderX, borderY, cellWidth, cellHeight);
-		        contentStream.stroke();
+                contentStream.stroke();
-	        }
+            }
-	    }
+        }
 
+        contentStream.close(); // Close the final content stream
+        sourceDocument.close();
 
-	    contentStream.close(); // Close the final content stream
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-	    sourceDocument.close();
+        newDocument.save(baos);
-
+        newDocument.close();
-	    ByteArrayOutputStream baos = new ByteArrayOutputStream();
-	    newDocument.save(baos);
-	    newDocument.close();
-
-	    byte[] result = baos.toByteArray();
-	    return WebResponseUtils.bytesToWebResponse(result, file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_layoutChanged.pdf");
-	}
-
 
+        byte[] result = baos.toByteArray();
+        return WebResponseUtils.bytesToWebResponse(
+                result,
+                file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_layoutChanged.pdf");
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/PdfOverlayController.java

@@ -1,11 +1,14 @@
 package stirling.software.SPDF.controller.api;
+
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.ArrayList;
+
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.Overlay;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.springframework.http.MediaType;
@@ -18,17 +21,23 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.general.OverlayPdfsRequest;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/general")
 @Tag(name = "General", description = "General APIs")
 public class PdfOverlayController {
 
-	@PostMapping(value = "/overlay-pdfs", consumes = "multipart/form-data")
+    @PostMapping(value = "/overlay-pdfs", consumes = "multipart/form-data")
-    @Operation(summary = "Overlay PDF files in various modes", description = "Overlay PDF files onto a base PDF with different modes: Sequential, Interleaved, or Fixed Repeat. Input:PDF Output:PDF Type:MIMO")
+    @Operation(
-    public ResponseEntity<byte[]> overlayPdfs(@ModelAttribute OverlayPdfsRequest request) throws IOException {
+            summary = "Overlay PDF files in various modes",
+            description =
+                    "Overlay PDF files onto a base PDF with different modes: Sequential, Interleaved, or Fixed Repeat. Input:PDF Output:PDF Type:MIMO")
+    public ResponseEntity<byte[]> overlayPdfs(@ModelAttribute OverlayPdfsRequest request)
+            throws IOException {
         MultipartFile baseFile = request.getFileInput();
         int overlayPos = request.getOverlayPosition();
 
@@ -41,12 +50,19 @@ public class PdfOverlayController {
                 overlayPdfFiles[i] = GeneralUtils.multipartToFile(overlayFiles[i]);
             }
 
-            String mode = request.getOverlayMode(); // "SequentialOverlay", "InterleavedOverlay", "FixedRepeatOverlay"
+            String mode = request.getOverlayMode(); // "SequentialOverlay", "InterleavedOverlay",
+            // "FixedRepeatOverlay"
             int[] counts = request.getCounts(); // Used for FixedRepeatOverlay mode
 
-            try (PDDocument basePdf = PDDocument.load(baseFile.getInputStream());
+            try (PDDocument basePdf = Loader.loadPDF(baseFile.getBytes());
                     Overlay overlay = new Overlay()) {
-                Map<Integer, String> overlayGuide = prepareOverlayGuide(basePdf.getNumberOfPages(), overlayPdfFiles, mode, counts, tempFiles);
+                Map<Integer, String> overlayGuide =
+                        prepareOverlayGuide(
+                                basePdf.getNumberOfPages(),
+                                overlayPdfFiles,
+                                mode,
+                                counts,
+                                tempFiles);
 
                 overlay.setInputPDF(basePdf);
                 if (overlayPos == 0) {
@@ -58,9 +74,12 @@ public class PdfOverlayController {
                 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                 overlay.overlay(overlayGuide).save(outputStream);
                 byte[] data = outputStream.toByteArray();
-                String outputFilename = baseFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_overlayed.pdf";  // Remove file extension and append .pdf
+                String outputFilename =
+                        baseFile.getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                                + "_overlayed.pdf"; // Remove file extension and append .pdf
 
-                return WebResponseUtils.bytesToWebResponse(data, outputFilename, MediaType.APPLICATION_PDF);
+                return WebResponseUtils.bytesToWebResponse(
+                        data, outputFilename, MediaType.APPLICATION_PDF);
             }
         } finally {
             for (File overlayPdfFile : overlayPdfFiles) {
@@ -76,7 +95,9 @@ public class PdfOverlayController {
         }
     }
 
-    private Map<Integer, String> prepareOverlayGuide(int basePageCount, File[] overlayFiles, String mode, int[] counts, List<File> tempFiles) throws IOException {
+    private Map<Integer, String> prepareOverlayGuide(
+            int basePageCount, File[] overlayFiles, String mode, int[] counts, List<File> tempFiles)
+            throws IOException {
         Map<Integer, String> overlayGuide = new HashMap<>();
         switch (mode) {
             case "SequentialOverlay":
@@ -94,17 +115,24 @@ public class PdfOverlayController {
         return overlayGuide;
     }
 
-    private void sequentialOverlay(Map<Integer, String> overlayGuide, File[] overlayFiles, int basePageCount, List<File> tempFiles) throws IOException {
+    private void sequentialOverlay(
+            Map<Integer, String> overlayGuide,
+            File[] overlayFiles,
+            int basePageCount,
+            List<File> tempFiles)
+            throws IOException {
         int overlayFileIndex = 0;
         int pageCountInCurrentOverlay = 0;
 
         for (int basePageIndex = 1; basePageIndex <= basePageCount; basePageIndex++) {
-            if (pageCountInCurrentOverlay == 0 || pageCountInCurrentOverlay >= getNumberOfPages(overlayFiles[overlayFileIndex])) {
+            if (pageCountInCurrentOverlay == 0
+                    || pageCountInCurrentOverlay
+                            >= getNumberOfPages(overlayFiles[overlayFileIndex])) {
                 pageCountInCurrentOverlay = 0;
                 overlayFileIndex = (overlayFileIndex + 1) % overlayFiles.length;
             }
 
-            try (PDDocument overlayPdf = PDDocument.load(overlayFiles[overlayFileIndex])) {
+            try (PDDocument overlayPdf = Loader.loadPDF(overlayFiles[overlayFileIndex])) {
                 PDDocument singlePageDocument = new PDDocument();
                 singlePageDocument.addPage(overlayPdf.getPage(pageCountInCurrentOverlay));
                 File tempFile = File.createTempFile("overlay-page-", ".pdf");
@@ -120,23 +148,19 @@ public class PdfOverlayController {
     }
 
     private int getNumberOfPages(File file) throws IOException {
-        try (PDDocument doc = PDDocument.load(file)) {
+        try (PDDocument doc = Loader.loadPDF(file)) {
             return doc.getNumberOfPages();
         }
     }
 
-
+    private void interleavedOverlay(
-
+            Map<Integer, String> overlayGuide, File[] overlayFiles, int basePageCount)
-
+            throws IOException {
-
-
-
-    private void interleavedOverlay(Map<Integer, String> overlayGuide, File[] overlayFiles, int basePageCount) throws IOException {
         for (int basePageIndex = 1; basePageIndex <= basePageCount; basePageIndex++) {
             File overlayFile = overlayFiles[(basePageIndex - 1) % overlayFiles.length];
 
             // Load the overlay document to check its page count
-            try (PDDocument overlayPdf = PDDocument.load(overlayFile)) {
+            try (PDDocument overlayPdf = Loader.loadPDF(overlayFile)) {
                 int overlayPageCount = overlayPdf.getNumberOfPages();
                 if ((basePageIndex - 1) % overlayPageCount < overlayPageCount) {
                     overlayGuide.put(basePageIndex, overlayFile.getAbsolutePath());
@@ -145,10 +169,12 @@ public class PdfOverlayController {
         }
     }
 
-
+    private void fixedRepeatOverlay(
-    private void fixedRepeatOverlay(Map<Integer, String> overlayGuide, File[] overlayFiles, int[] counts, int basePageCount) throws IOException {
+            Map<Integer, String> overlayGuide, File[] overlayFiles, int[] counts, int basePageCount)
+            throws IOException {
         if (overlayFiles.length != counts.length) {
-            throw new IllegalArgumentException("Counts array length must match the number of overlay files");
+            throw new IllegalArgumentException(
+                    "Counts array length must match the number of overlay files");
         }
         int currentPage = 1;
         for (int i = 0; i < overlayFiles.length; i++) {
@@ -156,7 +182,7 @@ public class PdfOverlayController {
             int repeatCount = counts[i];
 
             // Load the overlay document to check its page count
-            try (PDDocument overlayPdf = PDDocument.load(overlayFile)) {
+            try (PDDocument overlayPdf = Loader.loadPDF(overlayFile)) {
                 int overlayPageCount = overlayPdf.getNumberOfPages();
                 for (int j = 0; j < repeatCount; j++) {
                     for (int page = 0; page < overlayPageCount; page++) {
@@ -167,7 +193,7 @@ public class PdfOverlayController {
             }
         }
     }
-
 }
 
-// Additional classes like OverlayPdfsRequest, WebResponseUtils, etc. are assumed to be defined elsewhere.
+// Additional classes like OverlayPdfsRequest, WebResponseUtils, etc. are assumed to be defined
+// elsewhere.

src/main/java/stirling/software/SPDF/controller/api/RearrangePagesPDFController.java

@@ -4,6 +4,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.slf4j.Logger;
@@ -17,200 +18,204 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.SortTypes;
 import stirling.software.SPDF.model.api.PDFWithPageNums;
 import stirling.software.SPDF.model.api.general.RearrangePagesRequest;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/general")
 @Tag(name = "General", description = "General APIs")
 public class RearrangePagesPDFController {
 
-	private static final Logger logger = LoggerFactory.getLogger(RearrangePagesPDFController.class);
+    private static final Logger logger = LoggerFactory.getLogger(RearrangePagesPDFController.class);
 
-	@PostMapping(consumes = "multipart/form-data", value = "/remove-pages")
+    @PostMapping(consumes = "multipart/form-data", value = "/remove-pages")
-	@Operation(summary = "Remove pages from a PDF file", description = "This endpoint removes specified pages from a given PDF file. Users can provide a comma-separated list of page numbers or ranges to delete. Input:PDF Output:PDF Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> deletePages(@ModelAttribute PDFWithPageNums request )
+            summary = "Remove pages from a PDF file",
-			throws IOException {
+            description =
+                    "This endpoint removes specified pages from a given PDF file. Users can provide a comma-separated list of page numbers or ranges to delete. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> deletePages(@ModelAttribute PDFWithPageNums request)
+            throws IOException {
 
-		MultipartFile pdfFile = request.getFileInput();
+        MultipartFile pdfFile = request.getFileInput();
-		String pagesToDelete = request.getPageNumbers();
+        String pagesToDelete = request.getPageNumbers();
 
-		PDDocument document = PDDocument.load(pdfFile.getBytes());
+        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
 
-		// Split the page order string into an array of page numbers or range of numbers
+        // Split the page order string into an array of page numbers or range of numbers
-		String[] pageOrderArr = pagesToDelete.split(",");
+        String[] pageOrderArr = pagesToDelete.split(",");
 
-		List<Integer> pagesToRemove = GeneralUtils.parsePageList(pageOrderArr, document.getNumberOfPages());
+        List<Integer> pagesToRemove =
+                GeneralUtils.parsePageList(pageOrderArr, document.getNumberOfPages());
 
-		for (int i = pagesToRemove.size() - 1; i >= 0; i--) {
+        for (int i = pagesToRemove.size() - 1; i >= 0; i--) {
-			int pageIndex = pagesToRemove.get(i);
+            int pageIndex = pagesToRemove.get(i);
-			document.removePage(pageIndex);
+            document.removePage(pageIndex);
-		}
+        }
-		return WebResponseUtils.pdfDocToWebResponse(document,
+        return WebResponseUtils.pdfDocToWebResponse(
-				pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_removed_pages.pdf");
+                document,
-
+                pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_removed_pages.pdf");
-	}
-
-	
-
-	private List<Integer> removeFirst(int totalPages) {
-		if (totalPages <= 1)
-			return new ArrayList<>();
-		List<Integer> newPageOrder = new ArrayList<>();
-		for (int i = 2; i <= totalPages; i++) {
-			newPageOrder.add(i - 1);
-		}
-		return newPageOrder;
-	}
-
-	private List<Integer> removeLast(int totalPages) {
-		if (totalPages <= 1)
-			return new ArrayList<>();
-		List<Integer> newPageOrder = new ArrayList<>();
-		for (int i = 1; i < totalPages; i++) {
-			newPageOrder.add(i - 1);
-		}
-		return newPageOrder;
-	}
-
-	private List<Integer> removeFirstAndLast(int totalPages) {
-		if (totalPages <= 2)
-			return new ArrayList<>();
-		List<Integer> newPageOrder = new ArrayList<>();
-		for (int i = 2; i < totalPages; i++) {
-			newPageOrder.add(i - 1);
-		}
-		return newPageOrder;
-	}
-
-	private List<Integer> reverseOrder(int totalPages) {
-		List<Integer> newPageOrder = new ArrayList<>();
-		for (int i = totalPages; i >= 1; i--) {
-			newPageOrder.add(i - 1);
-		}
-		return newPageOrder;
-	}
-
-	private List<Integer> duplexSort(int totalPages) {
-		List<Integer> newPageOrder = new ArrayList<>();
-		int half = (totalPages + 1) / 2; // This ensures proper behavior with odd numbers of pages
-		for (int i = 1; i <= half; i++) {
-			newPageOrder.add(i - 1);
-			if (i <= totalPages - half) { // Avoid going out of bounds
-				newPageOrder.add(totalPages - i);
-			}
-		}
-		return newPageOrder;
-	}
-
-	private List<Integer> bookletSort(int totalPages) {
-		List<Integer> newPageOrder = new ArrayList<>();
-		for (int i = 0; i < totalPages / 2; i++) {
-			newPageOrder.add(i);
-			newPageOrder.add(totalPages - i - 1);
-		}
-		return newPageOrder;
-	}
-
-	private List<Integer> sideStitchBooklet(int totalPages) {
-		List<Integer> newPageOrder = new ArrayList<>();
-		for (int i = 0; i < (totalPages + 3) / 4; i++) {
-			int begin = i * 4;
-			newPageOrder.add(Math.min(begin + 3, totalPages - 1));
-			newPageOrder.add(Math.min(begin, totalPages - 1));
-			newPageOrder.add(Math.min(begin + 1, totalPages - 1));
-			newPageOrder.add(Math.min(begin + 2, totalPages - 1));
-		}
-		return newPageOrder;
     }
 
-	private List<Integer> oddEvenSplit(int totalPages) {
+    private List<Integer> removeFirst(int totalPages) {
-		List<Integer> newPageOrder = new ArrayList<>();
+        if (totalPages <= 1) return new ArrayList<>();
-		for (int i = 1; i <= totalPages; i += 2) {
+        List<Integer> newPageOrder = new ArrayList<>();
-			newPageOrder.add(i - 1);
+        for (int i = 2; i <= totalPages; i++) {
-		}
+            newPageOrder.add(i - 1);
-		for (int i = 2; i <= totalPages; i += 2) {
+        }
-			newPageOrder.add(i - 1);
+        return newPageOrder;
-		}
+    }
-		return newPageOrder;
-	}
 
-	private List<Integer> processSortTypes(String sortTypes, int totalPages) {
+    private List<Integer> removeLast(int totalPages) {
-		try {
+        if (totalPages <= 1) return new ArrayList<>();
-			SortTypes mode = SortTypes.valueOf(sortTypes.toUpperCase());
+        List<Integer> newPageOrder = new ArrayList<>();
-			switch (mode) {
+        for (int i = 1; i < totalPages; i++) {
-			case REVERSE_ORDER:
+            newPageOrder.add(i - 1);
-				return reverseOrder(totalPages);
+        }
-			case DUPLEX_SORT:
+        return newPageOrder;
-				return duplexSort(totalPages);
+    }
-			case BOOKLET_SORT:
-				return bookletSort(totalPages);
-			case SIDE_STITCH_BOOKLET_SORT:
-				return sideStitchBooklet(totalPages);
-			case ODD_EVEN_SPLIT:
-				return oddEvenSplit(totalPages);
-			case REMOVE_FIRST:
-				return removeFirst(totalPages);
-			case REMOVE_LAST:
-				return removeLast(totalPages);
-			case REMOVE_FIRST_AND_LAST:
-				return removeFirstAndLast(totalPages);
-			default:
-				throw new IllegalArgumentException("Unsupported custom mode");
-			}
-		} catch (IllegalArgumentException e) {
-			logger.error("Unsupported custom mode", e);
-			return null;
-		}
-	}
 
-	@PostMapping(consumes = "multipart/form-data", value = "/rearrange-pages")
+    private List<Integer> removeFirstAndLast(int totalPages) {
-	@Operation(summary = "Rearrange pages in a PDF file", description = "This endpoint rearranges pages in a given PDF file based on the specified page order or custom mode. Users can provide a page order as a comma-separated list of page numbers or page ranges, or a custom mode. Input:PDF Output:PDF")
+        if (totalPages <= 2) return new ArrayList<>();
-	public ResponseEntity<byte[]> rearrangePages(@ModelAttribute RearrangePagesRequest request) throws IOException {
+        List<Integer> newPageOrder = new ArrayList<>();
-	    MultipartFile pdfFile = request.getFileInput();
+        for (int i = 2; i < totalPages; i++) {
-	    String pageOrder = request.getPageNumbers();
+            newPageOrder.add(i - 1);
-	    String sortType = request.getCustomMode();
+        }
-		try {
+        return newPageOrder;
-			// Load the input PDF
+    }
-			PDDocument document = PDDocument.load(pdfFile.getInputStream());
 
-			// Split the page order string into an array of page numbers or range of numbers
+    private List<Integer> reverseOrder(int totalPages) {
-			String[] pageOrderArr = pageOrder != null ? pageOrder.split(",") : new String[0];
+        List<Integer> newPageOrder = new ArrayList<>();
-			int totalPages = document.getNumberOfPages();
+        for (int i = totalPages; i >= 1; i--) {
-			List<Integer> newPageOrder;
+            newPageOrder.add(i - 1);
-			if (sortType != null && sortType.length() > 0) {
+        }
-				newPageOrder = processSortTypes(sortType, totalPages);
+        return newPageOrder;
-			} else {
+    }
-				newPageOrder = GeneralUtils.parsePageList(pageOrderArr, totalPages);
-			}
-			logger.info("newPageOrder = "  +newPageOrder);
-			logger.info("totalPages = "  +totalPages);
-			// Create a new list to hold the pages in the new order
-			List<PDPage> newPages = new ArrayList<>();
-			for (int i = 0; i < newPageOrder.size(); i++) {
-				newPages.add(document.getPage(newPageOrder.get(i)));
-			}
 
-			// Remove all the pages from the original document
+    private List<Integer> duplexSort(int totalPages) {
-			for (int i = document.getNumberOfPages() - 1; i >= 0; i--) {
+        List<Integer> newPageOrder = new ArrayList<>();
-				document.removePage(i);
+        int half = (totalPages + 1) / 2; // This ensures proper behavior with odd numbers of pages
-			}
+        for (int i = 1; i <= half; i++) {
+            newPageOrder.add(i - 1);
+            if (i <= totalPages - half) { // Avoid going out of bounds
+                newPageOrder.add(totalPages - i);
+            }
+        }
+        return newPageOrder;
+    }
 
-			// Add the pages in the new order
+    private List<Integer> bookletSort(int totalPages) {
-			for (PDPage page : newPages) {
+        List<Integer> newPageOrder = new ArrayList<>();
-				document.addPage(page);
+        for (int i = 0; i < totalPages / 2; i++) {
-			}
+            newPageOrder.add(i);
+            newPageOrder.add(totalPages - i - 1);
+        }
+        return newPageOrder;
+    }
 
-			return WebResponseUtils.pdfDocToWebResponse(document,
+    private List<Integer> sideStitchBooklet(int totalPages) {
-					pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_rearranged.pdf");
+        List<Integer> newPageOrder = new ArrayList<>();
-		} catch (IOException e) {
+        for (int i = 0; i < (totalPages + 3) / 4; i++) {
-			logger.error("Failed rearranging documents", e);
+            int begin = i * 4;
-			return null;
+            newPageOrder.add(Math.min(begin + 3, totalPages - 1));
-		}
+            newPageOrder.add(Math.min(begin, totalPages - 1));
-	}
+            newPageOrder.add(Math.min(begin + 1, totalPages - 1));
+            newPageOrder.add(Math.min(begin + 2, totalPages - 1));
+        }
+        return newPageOrder;
+    }
 
+    private List<Integer> oddEvenSplit(int totalPages) {
+        List<Integer> newPageOrder = new ArrayList<>();
+        for (int i = 1; i <= totalPages; i += 2) {
+            newPageOrder.add(i - 1);
+        }
+        for (int i = 2; i <= totalPages; i += 2) {
+            newPageOrder.add(i - 1);
+        }
+        return newPageOrder;
+    }
 
+    private List<Integer> processSortTypes(String sortTypes, int totalPages) {
+        try {
+            SortTypes mode = SortTypes.valueOf(sortTypes.toUpperCase());
+            switch (mode) {
+                case REVERSE_ORDER:
+                    return reverseOrder(totalPages);
+                case DUPLEX_SORT:
+                    return duplexSort(totalPages);
+                case BOOKLET_SORT:
+                    return bookletSort(totalPages);
+                case SIDE_STITCH_BOOKLET_SORT:
+                    return sideStitchBooklet(totalPages);
+                case ODD_EVEN_SPLIT:
+                    return oddEvenSplit(totalPages);
+                case REMOVE_FIRST:
+                    return removeFirst(totalPages);
+                case REMOVE_LAST:
+                    return removeLast(totalPages);
+                case REMOVE_FIRST_AND_LAST:
+                    return removeFirstAndLast(totalPages);
+                default:
+                    throw new IllegalArgumentException("Unsupported custom mode");
+            }
+        } catch (IllegalArgumentException e) {
+            logger.error("Unsupported custom mode", e);
+            return null;
+        }
+    }
 
+    @PostMapping(consumes = "multipart/form-data", value = "/rearrange-pages")
+    @Operation(
+            summary = "Rearrange pages in a PDF file",
+            description =
+                    "This endpoint rearranges pages in a given PDF file based on the specified page order or custom mode. Users can provide a page order as a comma-separated list of page numbers or page ranges, or a custom mode. Input:PDF Output:PDF")
+    public ResponseEntity<byte[]> rearrangePages(@ModelAttribute RearrangePagesRequest request)
+            throws IOException {
+        MultipartFile pdfFile = request.getFileInput();
+        String pageOrder = request.getPageNumbers();
+        String sortType = request.getCustomMode();
+        try {
+            // Load the input PDF
+            PDDocument document = Loader.loadPDF(pdfFile.getBytes());
+
+            // Split the page order string into an array of page numbers or range of numbers
+            String[] pageOrderArr = pageOrder != null ? pageOrder.split(",") : new String[0];
+            int totalPages = document.getNumberOfPages();
+            List<Integer> newPageOrder;
+            if (sortType != null && sortType.length() > 0) {
+                newPageOrder = processSortTypes(sortType, totalPages);
+            } else {
+                newPageOrder = GeneralUtils.parsePageList(pageOrderArr, totalPages);
+            }
+            logger.info("newPageOrder = " + newPageOrder);
+            logger.info("totalPages = " + totalPages);
+            // Create a new list to hold the pages in the new order
+            List<PDPage> newPages = new ArrayList<>();
+            for (int i = 0; i < newPageOrder.size(); i++) {
+                newPages.add(document.getPage(newPageOrder.get(i)));
+            }
+
+            // Remove all the pages from the original document
+            for (int i = document.getNumberOfPages() - 1; i >= 0; i--) {
+                document.removePage(i);
+            }
+
+            // Add the pages in the new order
+            for (PDPage page : newPages) {
+                document.addPage(page);
+            }
+
+            return WebResponseUtils.pdfDocToWebResponse(
+                    document,
+                    pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                            + "_rearranged.pdf");
+        } catch (IOException e) {
+            logger.error("Failed rearranging documents", e);
+            return null;
+        }
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/RotationController.java

@@ -2,6 +2,7 @@ package stirling.software.SPDF.controller.api;
 
 import java.io.IOException;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageTree;
@@ -16,6 +17,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.general.RotatePDFRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -28,15 +30,15 @@ public class RotationController {
 
     @PostMapping(consumes = "multipart/form-data", value = "/rotate-pdf")
     @Operation(
-        summary = "Rotate a PDF file",
+            summary = "Rotate a PDF file",
-        description = "This endpoint rotates a given PDF file by a specified angle. The angle must be a multiple of 90. Input:PDF Output:PDF Type:SISO"
+            description =
-    )
+                    "This endpoint rotates a given PDF file by a specified angle. The angle must be a multiple of 90. Input:PDF Output:PDF Type:SISO")
-    public ResponseEntity<byte[]> rotatePDF(
+    public ResponseEntity<byte[]> rotatePDF(@ModelAttribute RotatePDFRequest request)
-    		@ModelAttribute RotatePDFRequest request) throws IOException {
+            throws IOException {
         MultipartFile pdfFile = request.getFileInput();
         Integer angle = request.getAngle();
         // Load the PDF document
-        PDDocument document = PDDocument.load(pdfFile.getBytes());
+        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
 
         // Get the list of pages in the document
         PDPageTree pages = document.getPages();
@@ -45,8 +47,8 @@ public class RotationController {
             page.setRotation(page.getRotation() + angle);
         }
 
-        return WebResponseUtils.pdfDocToWebResponse(document, pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_rotated.pdf");
+        return WebResponseUtils.pdfDocToWebResponse(
-
+                document,
+                pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_rotated.pdf");
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/ScalePagesController.java

@@ -5,6 +5,7 @@ import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.LayerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -23,88 +24,94 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.general.ScalePagesRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/general")
 @Tag(name = "General", description = "General APIs")
 public class ScalePagesController {
 
-	private static final Logger logger = LoggerFactory.getLogger(ScalePagesController.class);
+    private static final Logger logger = LoggerFactory.getLogger(ScalePagesController.class);
 
-	@PostMapping(value = "/scale-pages", consumes = "multipart/form-data")
+    @PostMapping(value = "/scale-pages", consumes = "multipart/form-data")
-	@Operation(summary = "Change the size of a PDF page/document", description = "This operation takes an input PDF file and the size to scale the pages to in the output PDF file. Input:PDF Output:PDF Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> scalePages(@ModelAttribute ScalePagesRequest request) throws IOException {
+            summary = "Change the size of a PDF page/document",
-	    MultipartFile file = request.getFileInput();
+            description =
-	    String targetPDRectangle = request.getPageSize();
+                    "This operation takes an input PDF file and the size to scale the pages to in the output PDF file. Input:PDF Output:PDF Type:SISO")
-	    float scaleFactor = request.getScaleFactor();
+    public ResponseEntity<byte[]> scalePages(@ModelAttribute ScalePagesRequest request)
+            throws IOException {
+        MultipartFile file = request.getFileInput();
+        String targetPDRectangle = request.getPageSize();
+        float scaleFactor = request.getScaleFactor();
 
-		Map<String, PDRectangle> sizeMap = new HashMap<>();
+        Map<String, PDRectangle> sizeMap = new HashMap<>();
-		// Add A0 - A10
+        // Add A0 - A10
-		sizeMap.put("A0", PDRectangle.A0);
+        sizeMap.put("A0", PDRectangle.A0);
-		sizeMap.put("A1", PDRectangle.A1);
+        sizeMap.put("A1", PDRectangle.A1);
-		sizeMap.put("A2", PDRectangle.A2);
+        sizeMap.put("A2", PDRectangle.A2);
-		sizeMap.put("A3", PDRectangle.A3);
+        sizeMap.put("A3", PDRectangle.A3);
-		sizeMap.put("A4", PDRectangle.A4);
+        sizeMap.put("A4", PDRectangle.A4);
-		sizeMap.put("A5", PDRectangle.A5);
+        sizeMap.put("A5", PDRectangle.A5);
-		sizeMap.put("A6", PDRectangle.A6);
+        sizeMap.put("A6", PDRectangle.A6);
 
-		// Add other sizes
+        // Add other sizes
-		sizeMap.put("LETTER", PDRectangle.LETTER);
+        sizeMap.put("LETTER", PDRectangle.LETTER);
-		sizeMap.put("LEGAL", PDRectangle.LEGAL);
+        sizeMap.put("LEGAL", PDRectangle.LEGAL);
 
-		if (!sizeMap.containsKey(targetPDRectangle)) {
+        if (!sizeMap.containsKey(targetPDRectangle)) {
-			throw new IllegalArgumentException(
+            throw new IllegalArgumentException(
-					"Invalid PDRectangle. It must be one of the following: A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10");
+                    "Invalid PDRectangle. It must be one of the following: A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10");
-		}
+        }
 
-		PDRectangle targetSize = sizeMap.get(targetPDRectangle);
+        PDRectangle targetSize = sizeMap.get(targetPDRectangle);
 
-	    PDDocument sourceDocument = PDDocument.load(file.getBytes());
+        PDDocument sourceDocument = Loader.loadPDF(file.getBytes());
-	    PDDocument outputDocument = new PDDocument();
+        PDDocument outputDocument = new PDDocument();
 
-	    int totalPages = sourceDocument.getNumberOfPages();
+        int totalPages = sourceDocument.getNumberOfPages();
-	    for (int i = 0; i < totalPages; i++) {
+        for (int i = 0; i < totalPages; i++) {
-	        PDPage sourcePage = sourceDocument.getPage(i);
+            PDPage sourcePage = sourceDocument.getPage(i);
-	        PDRectangle sourceSize = sourcePage.getMediaBox();
+            PDRectangle sourceSize = sourcePage.getMediaBox();
 
-	        float scaleWidth = targetSize.getWidth() / sourceSize.getWidth();
+            float scaleWidth = targetSize.getWidth() / sourceSize.getWidth();
-	        float scaleHeight = targetSize.getHeight() / sourceSize.getHeight();
+            float scaleHeight = targetSize.getHeight() / sourceSize.getHeight();
-	        float scale = Math.min(scaleWidth, scaleHeight) * scaleFactor;
+            float scale = Math.min(scaleWidth, scaleHeight) * scaleFactor;
 
-	        PDPage newPage = new PDPage(targetSize);
+            PDPage newPage = new PDPage(targetSize);
-	        outputDocument.addPage(newPage);
+            outputDocument.addPage(newPage);
 
-	        PDPageContentStream contentStream = new PDPageContentStream(outputDocument, newPage, PDPageContentStream.AppendMode.APPEND, true);
+            PDPageContentStream contentStream =
+                    new PDPageContentStream(
+                            outputDocument,
+                            newPage,
+                            PDPageContentStream.AppendMode.APPEND,
+                            true,
+                            true);
 
-	        float x = (targetSize.getWidth() - sourceSize.getWidth() * scale) / 2;
+            float x = (targetSize.getWidth() - sourceSize.getWidth() * scale) / 2;
-	        float y = (targetSize.getHeight() - sourceSize.getHeight() * scale) / 2;
+            float y = (targetSize.getHeight() - sourceSize.getHeight() * scale) / 2;
 
-	        contentStream.saveGraphicsState();
+            contentStream.saveGraphicsState();
-	        contentStream.transform(Matrix.getTranslateInstance(x, y));
+            contentStream.transform(Matrix.getTranslateInstance(x, y));
-	        contentStream.transform(Matrix.getScaleInstance(scale, scale));
+            contentStream.transform(Matrix.getScaleInstance(scale, scale));
 
-	        LayerUtility layerUtility = new LayerUtility(outputDocument);
+            LayerUtility layerUtility = new LayerUtility(outputDocument);
-	        PDFormXObject form = layerUtility.importPageAsForm(sourceDocument, i);
+            PDFormXObject form = layerUtility.importPageAsForm(sourceDocument, i);
-	        contentStream.drawForm(form);
+            contentStream.drawForm(form);
 
-	        contentStream.restoreGraphicsState();
+            contentStream.restoreGraphicsState();
-	        contentStream.close();
+            contentStream.close();
-	    }
+        }
-
-
-
-
-
-	    ByteArrayOutputStream baos = new ByteArrayOutputStream();
-	    outputDocument.save(baos);
-	    outputDocument.close();
-	    sourceDocument.close();
-	    
-	    
-		return WebResponseUtils.bytesToWebResponse(baos.toByteArray(),
-				file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scaled.pdf");
-	}
 
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        outputDocument.save(baos);
+        outputDocument.close();
+        sourceDocument.close();
 
+        return WebResponseUtils.bytesToWebResponse(
+                baos.toByteArray(),
+                file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scaled.pdf");
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/SplitPDFController.java

@@ -2,7 +2,6 @@ package stirling.software.SPDF.controller.api;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
@@ -11,6 +10,7 @@ import java.util.stream.Collectors;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.slf4j.Logger;
@@ -25,6 +25,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFWithPageNums;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -36,19 +37,24 @@ public class SplitPDFController {
     private static final Logger logger = LoggerFactory.getLogger(SplitPDFController.class);
 
     @PostMapping(consumes = "multipart/form-data", value = "/split-pages")
-    @Operation(summary = "Split a PDF file into separate documents",
+    @Operation(
-            description = "This endpoint splits a given PDF file into separate documents based on the specified page numbers or ranges. Users can specify pages using individual numbers, ranges, or 'all' for every page. Input:PDF Output:PDF Type:SIMO")
+            summary = "Split a PDF file into separate documents",
-    public ResponseEntity<byte[]> splitPdf(@ModelAttribute PDFWithPageNums request) throws IOException {
+            description =
-    	MultipartFile file = request.getFileInput();
+                    "This endpoint splits a given PDF file into separate documents based on the specified page numbers or ranges. Users can specify pages using individual numbers, ranges, or 'all' for every page. Input:PDF Output:PDF Type:SIMO")
+    public ResponseEntity<byte[]> splitPdf(@ModelAttribute PDFWithPageNums request)
+            throws IOException {
+        MultipartFile file = request.getFileInput();
         String pages = request.getPageNumbers();
         // open the pdf document
-        InputStream inputStream = file.getInputStream();
+
-        PDDocument document = PDDocument.load(inputStream);
+        PDDocument document = Loader.loadPDF(file.getBytes());
 
         List<Integer> pageNumbers = request.getPageNumbersList(document);
-        if(!pageNumbers.contains(document.getNumberOfPages() - 1))
+        if (!pageNumbers.contains(document.getNumberOfPages() - 1))
-        	pageNumbers.add(document.getNumberOfPages()- 1);
+            pageNumbers.add(document.getNumberOfPages() - 1);
-        logger.info("Splitting PDF into pages: {}", pageNumbers.stream().map(String::valueOf).collect(Collectors.joining(",")));
+        logger.info(
+                "Splitting PDF into pages: {}",
+                pageNumbers.stream().map(String::valueOf).collect(Collectors.joining(",")));
 
         // split the document
         List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
@@ -72,7 +78,6 @@ public class SplitPDFController {
             }
         }
 
-
         // closing the original document
         document.close();
 
@@ -104,8 +109,7 @@ public class SplitPDFController {
         Files.delete(zipFile);
 
         // return the Resource in the response
-        return WebResponseUtils.bytesToWebResponse(data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
+        return WebResponseUtils.bytesToWebResponse(
-        
+                data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySectionsController.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.controller.api;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -8,10 +9,12 @@ import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.LayerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.PDPageContentStream.AppendMode;
 import org.apache.pdfbox.pdmodel.common.PDRectangle;
 import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.apache.pdfbox.util.Matrix;
@@ -25,21 +28,26 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.SplitPdfBySectionsRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/general")
 @Tag(name = "General", description = "General APIs")
 public class SplitPdfBySectionsController {
 
-
+    @PostMapping(value = "/split-pdf-by-sections", consumes = "multipart/form-data")
-	@PostMapping(value = "/split-pdf-by-sections", consumes = "multipart/form-data")
+    @Operation(
-    @Operation(summary = "Split PDF pages into smaller sections", description = "Split each page of a PDF into smaller sections based on the user's choice (halves, thirds, quarters, etc.), both vertically and horizontally. Input:PDF Output:ZIP-PDF Type:SISO")
+            summary = "Split PDF pages into smaller sections",
-    public ResponseEntity<byte[]> splitPdf(@ModelAttribute SplitPdfBySectionsRequest request) throws Exception {
+            description =
+                    "Split each page of a PDF into smaller sections based on the user's choice (halves, thirds, quarters, etc.), both vertically and horizontally. Input:PDF Output:ZIP-PDF Type:SISO")
+    public ResponseEntity<byte[]> splitPdf(@ModelAttribute SplitPdfBySectionsRequest request)
+            throws Exception {
         List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
 
         MultipartFile file = request.getFileInput();
-        PDDocument sourceDocument = PDDocument.load(file.getInputStream());
+        PDDocument sourceDocument = Loader.loadPDF(file.getBytes());
 
         // Process the PDF based on split parameters
         int horiz = request.getHorizontalDivisions() + 1;
@@ -59,8 +67,6 @@ public class SplitPdfBySectionsController {
         String filename = file.getOriginalFilename().replaceFirst("[.][^.]+$", "");
         byte[] data;
 
-
-        
         try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipFile))) {
             int pageNum = 1;
             for (int i = 0; i < splitDocumentsBoas.size(); i++) {
@@ -82,10 +88,13 @@ public class SplitPdfBySectionsController {
             Files.delete(zipFile);
         }
 
-        return WebResponseUtils.bytesToWebResponse(data, filename + "_split.zip", MediaType.APPLICATION_OCTET_STREAM);
+        return WebResponseUtils.bytesToWebResponse(
+                data, filename + "_split.zip", MediaType.APPLICATION_OCTET_STREAM);
     }
 
-    public List<PDDocument> splitPdfPages(PDDocument document, int horizontalDivisions, int verticalDivisions) throws IOException {
+    public List<PDDocument> splitPdfPages(
+            PDDocument document, int horizontalDivisions, int verticalDivisions)
+            throws IOException {
         List<PDDocument> splitDocuments = new ArrayList<>();
 
         for (PDPage originalPage : document.getPages()) {
@@ -103,12 +112,18 @@ public class SplitPdfBySectionsController {
                     PDPage subPage = new PDPage(new PDRectangle(subPageWidth, subPageHeight));
                     subDoc.addPage(subPage);
 
-                    PDFormXObject form = layerUtility.importPageAsForm(document, document.getPages().indexOf(originalPage));
+                    PDFormXObject form =
+                            layerUtility.importPageAsForm(
+                                    document, document.getPages().indexOf(originalPage));
 
-                    try (PDPageContentStream contentStream = new PDPageContentStream(subDoc, subPage)) {
+                    try (PDPageContentStream contentStream =
+                            new PDPageContentStream(
+                                    subDoc, subPage, AppendMode.APPEND, true, true)) {
                         // Set clipping area and position
                         float translateX = -subPageWidth * i;
-                        float translateY = height - subPageHeight * (verticalDivisions - j);
+
+                        // float translateY = height - subPageHeight * (verticalDivisions - j);
+                        float translateY = -subPageHeight * (verticalDivisions - 1 - j);
 
                         contentStream.saveGraphicsState();
                         contentStream.addRect(0, 0, subPageWidth, subPageHeight);
@@ -127,9 +142,4 @@ public class SplitPdfBySectionsController {
 
         return splitDocuments;
     }
-
-
-
-    
-
 }

src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySizeController.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.controller.api;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -8,6 +9,7 @@ import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.springframework.http.MediaType;
@@ -20,6 +22,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.general.SplitPdfBySizeOrCountRequest;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
@@ -29,19 +32,20 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "General", description = "General APIs")
 public class SplitPdfBySizeController {
 
-
     @PostMapping(value = "/split-by-size-or-count", consumes = "multipart/form-data")
-    @Operation(summary = "Auto split PDF pages into separate documents based on size or count", description = "split PDF into multiple paged documents based on size/count, ie if 20 pages and split into 5, it does 5 documents each 4 pages\r\n"
+    @Operation(
-    		+ " if 10MB and each page is 1MB and you enter 2MB then 5 docs each 2MB (rounded so that it accepts 1.9MB but not 2.1MB) Input:PDF Output:ZIP-PDF Type:SISO")
+            summary = "Auto split PDF pages into separate documents based on size or count",
-    public ResponseEntity<byte[]> autoSplitPdf(@ModelAttribute SplitPdfBySizeOrCountRequest request) throws Exception {
+            description =
-    	List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<ByteArrayOutputStream>();
+                    "split PDF into multiple paged documents based on size/count, ie if 20 pages and split into 5, it does 5 documents each 4 pages\r\n"
-        
+                            + " if 10MB and each page is 1MB and you enter 2MB then 5 docs each 2MB (rounded so that it accepts 1.9MB but not 2.1MB) Input:PDF Output:ZIP-PDF Type:SISO")
-        
+    public ResponseEntity<byte[]> autoSplitPdf(@ModelAttribute SplitPdfBySizeOrCountRequest request)
+            throws Exception {
+        List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<ByteArrayOutputStream>();
 
         MultipartFile file = request.getFileInput();
-        PDDocument sourceDocument = PDDocument.load(file.getInputStream());
+        PDDocument sourceDocument = Loader.loadPDF(file.getBytes());
 
-        //0 = size, 1 = page count, 2 = doc count
+        // 0 = size, 1 = page count, 2 = doc count
         int type = request.getSplitType();
         String value = request.getSplitValue();
 
@@ -93,7 +97,7 @@ public class SplitPdfBySizeController {
                 splitDocumentsBoas.add(currentDocToByteArray(currentDoc));
             }
         } else if (type == 2) { // Split by doc count
-        	int documentCount = Integer.parseInt(value);
+            int documentCount = Integer.parseInt(value);
             int totalPageCount = sourceDocument.getNumberOfPages();
             int pagesPerDocument = totalPageCount / documentCount;
             int extraPages = totalPageCount % documentCount;
@@ -115,8 +119,6 @@ public class SplitPdfBySizeController {
 
         sourceDocument.close();
 
-        
-        
         Path zipFile = Files.createTempFile("split_documents", ".zip");
         String filename = file.getOriginalFilename().replaceFirst("[.][^.]+$", "");
         byte[] data;
@@ -135,11 +137,12 @@ public class SplitPdfBySizeController {
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
-        	data = Files.readAllBytes(zipFile);
+            data = Files.readAllBytes(zipFile);
             Files.delete(zipFile);
         }
 
-        return WebResponseUtils.bytesToWebResponse(data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
+        return WebResponseUtils.bytesToWebResponse(
+                data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
     }
 
     private ByteArrayOutputStream currentDocToByteArray(PDDocument document) throws IOException {
@@ -148,6 +151,4 @@ public class SplitPdfBySizeController {
         document.close();
         return baos;
     }
-    
-
 }

src/main/java/stirling/software/SPDF/controller/api/ToSinglePageController.java

@@ -4,6 +4,7 @@ import java.awt.geom.AffineTransform;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.LayerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -20,8 +21,10 @@ import org.springframework.web.bind.annotation.RestController;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFFile;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/general")
 @Tag(name = "General", description = "General APIs")
@@ -29,58 +32,61 @@ public class ToSinglePageController {
 
     private static final Logger logger = LoggerFactory.getLogger(ToSinglePageController.class);
 
-   
     @PostMapping(consumes = "multipart/form-data", value = "/pdf-to-single-page")
     @Operation(
-        summary = "Convert a multi-page PDF into a single long page PDF",
+            summary = "Convert a multi-page PDF into a single long page PDF",
-        description = "This endpoint converts a multi-page PDF document into a single paged PDF document. The width of the single page will be same as the input's width, but the height will be the sum of all the pages' heights. Input:PDF Output:PDF Type:SISO"
+            description =
-    )
+                    "This endpoint converts a multi-page PDF document into a single paged PDF document. The width of the single page will be same as the input's width, but the height will be the sum of all the pages' heights. Input:PDF Output:PDF Type:SISO")
-    public ResponseEntity<byte[]> pdfToSinglePage(@ModelAttribute PDFFile request) throws IOException {
+    public ResponseEntity<byte[]> pdfToSinglePage(@ModelAttribute PDFFile request)
+            throws IOException {
 
-    	// Load the source document
+        // Load the source document
-    	PDDocument sourceDocument = PDDocument.load(request.getFileInput().getInputStream());
+        PDDocument sourceDocument = Loader.loadPDF(request.getFileInput().getBytes());
 
-    	// Calculate total height and max width
+        // Calculate total height and max width
-    	float totalHeight = 0;
+        float totalHeight = 0;
-    	float maxWidth = 0;
+        float maxWidth = 0;
-    	for (PDPage page : sourceDocument.getPages()) {
+        for (PDPage page : sourceDocument.getPages()) {
-    	    PDRectangle pageSize = page.getMediaBox();
+            PDRectangle pageSize = page.getMediaBox();
-    	    totalHeight += pageSize.getHeight();
+            totalHeight += pageSize.getHeight();
-    	    maxWidth = Math.max(maxWidth, pageSize.getWidth());
+            maxWidth = Math.max(maxWidth, pageSize.getWidth());
-    	}
+        }
 
-    	// Create new document and page with calculated dimensions
+        // Create new document and page with calculated dimensions
-    	PDDocument newDocument = new PDDocument();
+        PDDocument newDocument = new PDDocument();
-    	PDPage newPage = new PDPage(new PDRectangle(maxWidth, totalHeight));
+        PDPage newPage = new PDPage(new PDRectangle(maxWidth, totalHeight));
-    	newDocument.addPage(newPage);
+        newDocument.addPage(newPage);
 
-    	// Initialize the content stream of the new page
+        // Initialize the content stream of the new page
-    	PDPageContentStream contentStream = new PDPageContentStream(newDocument, newPage);
+        PDPageContentStream contentStream = new PDPageContentStream(newDocument, newPage);
-    	contentStream.close();
+        contentStream.close();
-    	
-    	LayerUtility layerUtility = new LayerUtility(newDocument);
-    	float yOffset = totalHeight;
-
-    	// For each page, copy its content to the new page at the correct offset
-    	for (PDPage page : sourceDocument.getPages()) {
-    	    PDFormXObject form = layerUtility.importPageAsForm(sourceDocument, sourceDocument.getPages().indexOf(page));
-    	    AffineTransform af = AffineTransform.getTranslateInstance(0, yOffset - page.getMediaBox().getHeight());
-    	    layerUtility.wrapInSaveRestore(newPage);
-    	    String defaultLayerName = "Layer" + sourceDocument.getPages().indexOf(page);
-    	    layerUtility.appendFormAsLayer(newPage, form, af, defaultLayerName);
-    	    yOffset -= page.getMediaBox().getHeight();
-    	}
-
-    	ByteArrayOutputStream baos = new ByteArrayOutputStream();
-    	newDocument.save(baos);
-    	newDocument.close();
-    	sourceDocument.close();
-
-    	byte[] result = baos.toByteArray();
-    	return WebResponseUtils.bytesToWebResponse(result, request.getFileInput().getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_singlePage.pdf");
 
+        LayerUtility layerUtility = new LayerUtility(newDocument);
+        float yOffset = totalHeight;
 
+        // For each page, copy its content to the new page at the correct offset
+        for (PDPage page : sourceDocument.getPages()) {
+            PDFormXObject form =
+                    layerUtility.importPageAsForm(
+                            sourceDocument, sourceDocument.getPages().indexOf(page));
+            AffineTransform af =
+                    AffineTransform.getTranslateInstance(
+                            0, yOffset - page.getMediaBox().getHeight());
+            layerUtility.wrapInSaveRestore(newPage);
+            String defaultLayerName = "Layer" + sourceDocument.getPages().indexOf(page);
+            layerUtility.appendFormAsLayer(newPage, form, af, defaultLayerName);
+            yOffset -= page.getMediaBox().getHeight();
+        }
 
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        newDocument.save(baos);
+        newDocument.close();
+        sourceDocument.close();
 
+        byte[] result = baos.toByteArray();
+        return WebResponseUtils.bytesToWebResponse(
+                result,
+                request.getFileInput().getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                        + "_singlePage.pdf");
     }
 }

src/main/java/stirling/software/SPDF/controller/api/UserController.java

@@ -13,6 +13,7 @@ import org.springframework.security.core.Authentication;
 import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -20,63 +21,72 @@ import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 import org.springframework.web.servlet.view.RedirectView;
 
+import io.swagger.v3.oas.annotations.tags.Tag;
+
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import stirling.software.SPDF.config.security.UserService;
 import stirling.software.SPDF.model.Role;
 import stirling.software.SPDF.model.User;
+import stirling.software.SPDF.model.api.user.UpdateUserDetails;
+import stirling.software.SPDF.model.api.user.UsernameAndPass;
 
 @Controller
+@Tag(name = "User", description = "User APIs")
 @RequestMapping("/api/v1/user")
 public class UserController {
 
-    @Autowired
+    @Autowired private UserService userService;
-    private UserService userService;
 
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
     @PostMapping("/register")
-    public String register(@RequestParam String username, @RequestParam String password, Model model) {
+    public String register(@ModelAttribute UsernameAndPass requestModel, Model model) {
-        if(userService.usernameExists(username)) {
+        if (userService.usernameExists(requestModel.getUsername())) {
             model.addAttribute("error", "Username already exists");
             return "register";
         }
 
-        userService.saveUser(username, password);
+        userService.saveUser(requestModel.getUsername(), requestModel.getPassword());
         return "redirect:/login?registered=true";
     }
 
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
     @PostMapping("/change-username-and-password")
-    public RedirectView changeUsernameAndPassword(Principal principal,
+    public RedirectView changeUsernameAndPassword(
-                                                 @RequestParam String currentPassword, 
+            Principal principal,
-                                                 @RequestParam String newUsername, 
+            @ModelAttribute UpdateUserDetails requestModel,
-                                                 @RequestParam String newPassword, 
+            HttpServletRequest request,
-                                                 HttpServletRequest request, 
+            HttpServletResponse response,
-                                                 HttpServletResponse response,
+            RedirectAttributes redirectAttributes) {
-                                                 RedirectAttributes redirectAttributes) {
-    	if (principal == null) {
-    	    return new RedirectView("/change-creds?messageType=notAuthenticated");
-    	}
 
-    	Optional<User> userOpt = userService.findByUsername(principal.getName());
+        String currentPassword = requestModel.getPassword();
+        String newPassword = requestModel.getNewPassword();
+        String newUsername = requestModel.getNewUsername();
 
-    	if (userOpt == null || userOpt.isEmpty()) {
+        if (principal == null) {
-    	    return new RedirectView("/change-creds?messageType=userNotFound");
+            return new RedirectView("/change-creds?messageType=notAuthenticated");
-    	}
+        }
 
-    	User user = userOpt.get();
+        Optional<User> userOpt = userService.findByUsername(principal.getName());
 
-    	if (!userService.isPasswordCorrect(user, currentPassword)) {
+        if (userOpt == null || userOpt.isEmpty()) {
-    	    return new RedirectView("/change-creds?messageType=incorrectPassword");
+            return new RedirectView("/change-creds?messageType=userNotFound");
-    	}
+        }
 
-    	if (!user.getUsername().equals(newUsername) && userService.usernameExists(newUsername)) {
+        User user = userOpt.get();
-    	    return new RedirectView("/change-creds?messageType=usernameExists");
-    	}
 
+        if (!userService.isPasswordCorrect(user, currentPassword)) {
+            return new RedirectView("/change-creds?messageType=incorrectPassword");
+        }
+
+        if (!user.getUsername().equals(newUsername) && userService.usernameExists(newUsername)) {
+            return new RedirectView("/change-creds?messageType=usernameExists");
+        }
 
         userService.changePassword(user, newPassword);
-        if(newUsername != null && newUsername.length() > 0 && !user.getUsername().equals(newUsername)) {
+        if (newUsername != null
+                && newUsername.length() > 0
+                && !user.getUsername().equals(newUsername)) {
             userService.changeUsername(user, newUsername);
         }
         userService.changeFirstUse(user, false);
@@ -87,36 +97,36 @@ public class UserController {
         return new RedirectView("/login?messageType=credsUpdated");
     }
 
-
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
     @PostMapping("/change-username")
-    public RedirectView changeUsername(Principal principal,
+    public RedirectView changeUsername(
-                                       @RequestParam String currentPassword, 
+            Principal principal,
-                                       @RequestParam String newUsername, 
+            @RequestParam String currentPassword,
-                                       HttpServletRequest request, 
+            @RequestParam String newUsername,
-                                       HttpServletResponse response,
+            HttpServletRequest request,
-                                       RedirectAttributes redirectAttributes) {
+            HttpServletResponse response,
-    	if (principal == null) {
+            RedirectAttributes redirectAttributes) {
-    	    return new RedirectView("/account?messageType=notAuthenticated");
+        if (principal == null) {
-    	}
+            return new RedirectView("/account?messageType=notAuthenticated");
+        }
 
-    	Optional<User> userOpt = userService.findByUsername(principal.getName());
+        Optional<User> userOpt = userService.findByUsername(principal.getName());
 
-    	if (userOpt == null || userOpt.isEmpty()) {
+        if (userOpt == null || userOpt.isEmpty()) {
-    	    return new RedirectView("/account?messageType=userNotFound");
+            return new RedirectView("/account?messageType=userNotFound");
-    	}
+        }
 
-    	User user = userOpt.get();
+        User user = userOpt.get();
 
-    	if (!userService.isPasswordCorrect(user, currentPassword)) {
+        if (!userService.isPasswordCorrect(user, currentPassword)) {
-    	    return new RedirectView("/account?messageType=incorrectPassword");
+            return new RedirectView("/account?messageType=incorrectPassword");
-    	}
+        }
 
-    	if (!user.getUsername().equals(newUsername) && userService.usernameExists(newUsername)) {
+        if (!user.getUsername().equals(newUsername) && userService.usernameExists(newUsername)) {
-    	    return new RedirectView("/account?messageType=usernameExists");
+            return new RedirectView("/account?messageType=usernameExists");
-    	}
+        }
 
-    	if(newUsername != null && newUsername.length() > 0) {
+        if (newUsername != null && newUsername.length() > 0) {
             userService.changeUsername(user, newUsername);
         }
 
@@ -128,27 +138,28 @@ public class UserController {
 
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
     @PostMapping("/change-password")
-    public RedirectView changePassword(Principal principal, 
+    public RedirectView changePassword(
-                                       @RequestParam String currentPassword, 
+            Principal principal,
-                                       @RequestParam String newPassword, 
+            @RequestParam String currentPassword,
-                                       HttpServletRequest request, 
+            @RequestParam String newPassword,
-                                       HttpServletResponse response,
+            HttpServletRequest request,
-                                       RedirectAttributes redirectAttributes) {
+            HttpServletResponse response,
-    	if (principal == null) {
+            RedirectAttributes redirectAttributes) {
-    	    return new RedirectView("/account?messageType=notAuthenticated");
+        if (principal == null) {
-    	}
+            return new RedirectView("/account?messageType=notAuthenticated");
+        }
 
-    	Optional<User> userOpt = userService.findByUsername(principal.getName());
+        Optional<User> userOpt = userService.findByUsername(principal.getName());
 
-    	if (userOpt == null || userOpt.isEmpty()) {
+        if (userOpt == null || userOpt.isEmpty()) {
-    	    return new RedirectView("/account?messageType=userNotFound");
+            return new RedirectView("/account?messageType=userNotFound");
-    	}
+        }
 
-    	User user = userOpt.get();
+        User user = userOpt.get();
 
-    	if (!userService.isPasswordCorrect(user, currentPassword)) {
+        if (!userService.isPasswordCorrect(user, currentPassword)) {
-    	    return new RedirectView("/account?messageType=incorrectPassword");
+            return new RedirectView("/account?messageType=incorrectPassword");
-    	}
+        }
 
         userService.changePassword(user, newPassword);
 
@@ -160,33 +171,37 @@ public class UserController {
 
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
     @PostMapping("/updateUserSettings")
-	public String updateUserSettings(HttpServletRequest request, Principal principal) {
+    public String updateUserSettings(HttpServletRequest request, Principal principal) {
-	    Map<String, String[]> paramMap = request.getParameterMap();
+        Map<String, String[]> paramMap = request.getParameterMap();
-	    Map<String, String> updates = new HashMap<>();
+        Map<String, String> updates = new HashMap<>();
 
-	    System.out.println("Received parameter map: " + paramMap);
+        System.out.println("Received parameter map: " + paramMap);
 
-	    for (Map.Entry<String, String[]> entry : paramMap.entrySet()) {
+        for (Map.Entry<String, String[]> entry : paramMap.entrySet()) {
-	        updates.put(entry.getKey(), entry.getValue()[0]);
+            updates.put(entry.getKey(), entry.getValue()[0]);
-	    }
+        }
 
-	    System.out.println("Processed updates: " + updates);
+        System.out.println("Processed updates: " + updates);
 
-	    // Assuming you have a method in userService to update the settings for a user
+        // Assuming you have a method in userService to update the settings for a user
-	    userService.updateUserSettings(principal.getName(), updates);
+        userService.updateUserSettings(principal.getName(), updates);
 
-	    return "redirect:/account";  // Redirect to a page of your choice after updating
+        return "redirect:/account"; // Redirect to a page of your choice after updating
-	}
+    }
 
     @PreAuthorize("hasRole('ROLE_ADMIN')")
     @PostMapping("/admin/saveUser")
-    public RedirectView saveUser(@RequestParam String username, @RequestParam String password, @RequestParam String role, 
+    public RedirectView saveUser(
-    		@RequestParam(name = "forceChange", required = false, defaultValue = "false") boolean forceChange) {
+            @RequestParam String username,
+            @RequestParam String password,
+            @RequestParam String role,
+            @RequestParam(name = "forceChange", required = false, defaultValue = "false")
+                    boolean forceChange) {
 
-    	if(userService.usernameExists(username)) {
+        if (userService.usernameExists(username)) {
-    		return new RedirectView("/addUsers?messageType=usernameExists");
+            return new RedirectView("/addUsers?messageType=usernameExists");
-    	}
+        }
-    	try {
+        try {
             // Validate the role
             Role roleEnum = Role.fromString(role);
             if (roleEnum == Role.INTERNAL_API_USER) {
@@ -199,15 +214,14 @@ public class UserController {
         }
 
         userService.saveUser(username, password, role, forceChange);
-        return new RedirectView("/addUsers");  // Redirect to account page after adding the user
+        return new RedirectView("/addUsers"); // Redirect to account page after adding the user
     }
 
-    
     @PreAuthorize("hasRole('ROLE_ADMIN')")
     @PostMapping("/admin/deleteUser/{username}")
-    public String deleteUser(@PathVariable String username,  Authentication authentication) {
+    public String deleteUser(@PathVariable String username, Authentication authentication) {
 
-    	// Get the currently authenticated username
+        // Get the currently authenticated username
         String currentUsername = authentication.getName();
 
         // Check if the provided username matches the current session's username
@@ -215,7 +229,7 @@ public class UserController {
             throw new IllegalArgumentException("Cannot delete currently logined in user.");
         }
 
-    	userService.deleteUser(username); 
+        userService.deleteUser(username);
         return "redirect:/addUsers";
     }
 
@@ -247,6 +261,4 @@ public class UserController {
         }
         return ResponseEntity.ok(apiKey);
     }
-    
-    
 }

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertBookToPDFController.java

@@ -0,0 +1,68 @@
+package stirling.software.SPDF.controller.api.converters;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.api.GeneralFile;
+import stirling.software.SPDF.utils.FileToPdf;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@Tag(name = "Convert", description = "Convert APIs")
+@RequestMapping("/api/v1/convert")
+public class ConvertBookToPDFController {
+
+    @Autowired
+    @Qualifier("bookFormatsInstalled")
+    private boolean bookFormatsInstalled;
+
+    @PostMapping(consumes = "multipart/form-data", value = "/book/pdf")
+    @Operation(
+            summary =
+                    "Convert a BOOK/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx) to PDF",
+            description =
+                    "(Requires bookFormatsInstalled flag and Calibre installed) This endpoint takes an BOOK/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx)  input and converts it to PDF format.")
+    public ResponseEntity<byte[]> HtmlToPdf(@ModelAttribute GeneralFile request) throws Exception {
+        MultipartFile fileInput = request.getFileInput();
+
+        if (!bookFormatsInstalled) {
+            throw new IllegalArgumentException(
+                    "bookFormatsInstalled flag is False, this functionality is not avaiable");
+        }
+
+        if (fileInput == null) {
+            throw new IllegalArgumentException("Please provide a file for conversion.");
+        }
+
+        String originalFilename = fileInput.getOriginalFilename();
+
+        if (originalFilename != null) {
+            String originalFilenameLower = originalFilename.toLowerCase();
+            if (!originalFilenameLower.endsWith(".epub")
+                    && !originalFilenameLower.endsWith(".mobi")
+                    && !originalFilenameLower.endsWith(".azw3")
+                    && !originalFilenameLower.endsWith(".fb2")
+                    && !originalFilenameLower.endsWith(".txt")
+                    && !originalFilenameLower.endsWith(".docx")) {
+                throw new IllegalArgumentException(
+                        "File must be in .epub, .mobi, .azw3, .fb2, .txt, or .docx format.");
+            }
+        }
+        byte[] pdfBytes = FileToPdf.convertBookTypeToPdf(fileInput.getBytes(), originalFilename);
+
+        String outputFilename =
+                originalFilename.replaceFirst("[.][^.]+$", "")
+                        + ".pdf"; // Remove file extension and append .pdf
+
+        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertHtmlToPDF.java

@@ -1,5 +1,7 @@
 package stirling.software.SPDF.controller.api.converters;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -9,7 +11,8 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
-import stirling.software.SPDF.model.api.GeneralFile;
+
+import stirling.software.SPDF.model.api.converters.HTMLToPdfRequest;
 import stirling.software.SPDF.utils.FileToPdf;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -18,35 +21,37 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertHtmlToPDF {
 
+    @Autowired
+    @Qualifier("htmlFormatsInstalled")
+    private boolean htmlFormatsInstalled;
 
-	 @PostMapping(consumes = "multipart/form-data", value = "/html/pdf")
+    @PostMapping(consumes = "multipart/form-data", value = "/html/pdf")
-	    @Operation(
+    @Operation(
-	        summary = "Convert an HTML or ZIP (containing HTML and CSS) to PDF",
+            summary = "Convert an HTML or ZIP (containing HTML and CSS) to PDF",
-	        description = "This endpoint takes an HTML or ZIP file input and converts it to a PDF format."
+            description =
-	    )
+                    "This endpoint takes an HTML or ZIP file input and converts it to a PDF format.")
-	    public ResponseEntity<byte[]> HtmlToPdf(
+    public ResponseEntity<byte[]> HtmlToPdf(@ModelAttribute HTMLToPdfRequest request)
-	    		@ModelAttribute GeneralFile request) 
+            throws Exception {
-	    		        throws Exception {
+        MultipartFile fileInput = request.getFileInput();
-	    			MultipartFile fileInput = request.getFileInput();
-
-	        if (fileInput == null) {
-	            throw new IllegalArgumentException("Please provide an HTML or ZIP file for conversion.");
-	        }
-
-	        String originalFilename = fileInput.getOriginalFilename();
-	        if (originalFilename == null || (!originalFilename.endsWith(".html") && !originalFilename.endsWith(".zip"))) {
-	            throw new IllegalArgumentException("File must be either .html or .zip format.");
-	        }byte[] pdfBytes = FileToPdf.convertHtmlToPdf( fileInput.getBytes(), originalFilename);
-	        
-	        String outputFilename = originalFilename.replaceFirst("[.][^.]+$", "") + ".pdf";  // Remove file extension and append .pdf
-	        
-	        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
-	    }
-
-	   
-
 
+        if (fileInput == null) {
+            throw new IllegalArgumentException(
+                    "Please provide an HTML or ZIP file for conversion.");
+        }
 
+        String originalFilename = fileInput.getOriginalFilename();
+        if (originalFilename == null
+                || (!originalFilename.endsWith(".html") && !originalFilename.endsWith(".zip"))) {
+            throw new IllegalArgumentException("File must be either .html or .zip format.");
+        }
+        byte[] pdfBytes =
+                FileToPdf.convertHtmlToPdf(
+                        request, fileInput.getBytes(), originalFilename, htmlFormatsInstalled);
 
+        String outputFilename =
+                originalFilename.replaceFirst("[.][^.]+$", "")
+                        + ".pdf"; // Remove file extension and append .pdf
 
+        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java

@@ -20,6 +20,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.converters.ConvertToImageRequest;
 import stirling.software.SPDF.model.api.converters.ConvertToPdfRequest;
 import stirling.software.SPDF.utils.PdfUtils;
@@ -33,9 +34,12 @@ public class ConvertImgPDFController {
     private static final Logger logger = LoggerFactory.getLogger(ConvertImgPDFController.class);
 
     @PostMapping(consumes = "multipart/form-data", value = "/pdf/img")
-    @Operation(summary = "Convert PDF to image(s)",
+    @Operation(
-            description = "This endpoint converts a PDF file to image(s) with the specified image format, color type, and DPI. Users can choose to get a single image or multiple images.  Input:PDF Output:Image Type:SI-Conditional")
+            summary = "Convert PDF to image(s)",
-    public ResponseEntity<Resource> convertToImage(@ModelAttribute ConvertToImageRequest request) throws IOException {
+            description =
+                    "This endpoint converts a PDF file to image(s) with the specified image format, color type, and DPI. Users can choose to get a single image or multiple images.  Input:PDF Output:Image Type:SI-Conditional")
+    public ResponseEntity<Resource> convertToImage(@ModelAttribute ConvertToImageRequest request)
+            throws IOException {
         MultipartFile file = request.getFileInput();
         String imageFormat = request.getImageFormat();
         String singleOrMultiple = request.getSingleOrMultiple();
@@ -54,7 +58,14 @@ public class ConvertImgPDFController {
         byte[] result = null;
         String filename = file.getOriginalFilename().replaceFirst("[.][^.]+$", "");
         try {
-            result = PdfUtils.convertFromPdf(pdfBytes, imageFormat.toUpperCase(), colorTypeResult, singleImage, Integer.valueOf(dpi), filename);
+            result =
+                    PdfUtils.convertFromPdf(
+                            pdfBytes,
+                            imageFormat.toUpperCase(),
+                            colorTypeResult,
+                            singleImage,
+                            Integer.valueOf(dpi),
+                            filename);
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
@@ -65,21 +76,29 @@ public class ConvertImgPDFController {
         if (singleImage) {
             HttpHeaders headers = new HttpHeaders();
             headers.setContentType(MediaType.parseMediaType(getMediaType(imageFormat)));
-            ResponseEntity<Resource> response = new ResponseEntity<>(new ByteArrayResource(result), headers, HttpStatus.OK);
+            ResponseEntity<Resource> response =
+                    new ResponseEntity<>(new ByteArrayResource(result), headers, HttpStatus.OK);
             return response;
         } else {
             ByteArrayResource resource = new ByteArrayResource(result);
             // return the Resource in the response
             return ResponseEntity.ok()
-                    .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + filename + "_convertedToImages.zip")
+                    .header(
-                    .contentType(MediaType.APPLICATION_OCTET_STREAM).contentLength(resource.contentLength()).body(resource);
+                            HttpHeaders.CONTENT_DISPOSITION,
+                            "attachment; filename=" + filename + "_convertedToImages.zip")
+                    .contentType(MediaType.APPLICATION_OCTET_STREAM)
+                    .contentLength(resource.contentLength())
+                    .body(resource);
         }
     }
 
     @PostMapping(consumes = "multipart/form-data", value = "/img/pdf")
-    @Operation(summary = "Convert images to a PDF file",
+    @Operation(
-            description = "This endpoint converts one or more images to a PDF file. Users can specify whether to stretch the images to fit the PDF page, and whether to automatically rotate the images. Input:Image Output:PDF Type:SISO?")
+            summary = "Convert images to a PDF file",
-    public ResponseEntity<byte[]> convertToPdf(@ModelAttribute ConvertToPdfRequest request) throws IOException {
+            description =
+                    "This endpoint converts one or more images to a PDF file. Users can specify whether to stretch the images to fit the PDF page, and whether to automatically rotate the images. Input:Image Output:PDF Type:MISO")
+    public ResponseEntity<byte[]> convertToPdf(@ModelAttribute ConvertToPdfRequest request)
+            throws IOException {
         MultipartFile[] file = request.getFileInput();
         String fitOption = request.getFitOption();
         String colorType = request.getColorType();
@@ -87,7 +106,9 @@ public class ConvertImgPDFController {
 
         // Convert the file to PDF and get the resulting bytes
         byte[] bytes = PdfUtils.imageToPdf(file, fitOption, autoRotate, colorType);
-        return WebResponseUtils.bytesToWebResponse(bytes, file[0].getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_converted.pdf");
+        return WebResponseUtils.bytesToWebResponse(
+                bytes,
+                file[0].getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_converted.pdf");
     }
 
     private String getMediaType(String imageFormat) {

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertMarkdownToPdf.java

@@ -1,8 +1,17 @@
 package stirling.software.SPDF.controller.api.converters;
 
+import java.util.List;
+import java.util.Map;
+
+import org.commonmark.Extension;
+import org.commonmark.ext.gfm.tables.TableBlock;
+import org.commonmark.ext.gfm.tables.TablesExtension;
 import org.commonmark.node.Node;
 import org.commonmark.parser.Parser;
+import org.commonmark.renderer.html.AttributeProvider;
 import org.commonmark.renderer.html.HtmlRenderer;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -12,6 +21,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.GeneralFile;
 import stirling.software.SPDF.utils.FileToPdf;
 import stirling.software.SPDF.utils.WebResponseUtils;
@@ -21,15 +31,18 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertMarkdownToPdf {
 
-	@PostMapping(consumes = "multipart/form-data", value = "/markdown/pdf")
+    @Autowired
+    @Qualifier("htmlFormatsInstalled")
+    private boolean htmlFormatsInstalled;
+
+    @PostMapping(consumes = "multipart/form-data", value = "/markdown/pdf")
     @Operation(
-        summary = "Convert a Markdown file to PDF",
+            summary = "Convert a Markdown file to PDF",
-        description = "This endpoint takes a Markdown file input, converts it to HTML, and then to PDF format."
+            description =
-    )
+                    "This endpoint takes a Markdown file input, converts it to HTML, and then to PDF format. Input:MARKDOWN Output:PDF Type:SISO")
-    public ResponseEntity<byte[]> markdownToPdf(
+    public ResponseEntity<byte[]> markdownToPdf(@ModelAttribute GeneralFile request)
-    		@ModelAttribute GeneralFile request) 
+            throws Exception {
-    		        throws Exception {
+        MultipartFile fileInput = request.getFileInput();
-    			MultipartFile fileInput = request.getFileInput();
 
         if (fileInput == null) {
             throw new IllegalArgumentException("Please provide a Markdown file for conversion.");
@@ -41,14 +54,34 @@ public class ConvertMarkdownToPdf {
         }
 
         // Convert Markdown to HTML using CommonMark
-        Parser parser = Parser.builder().build();
+        List<Extension> extensions = List.of(TablesExtension.create());
+        Parser parser = Parser.builder().extensions(extensions).build();
+
         Node document = parser.parse(new String(fileInput.getBytes()));
-        HtmlRenderer renderer = HtmlRenderer.builder().build();
+        HtmlRenderer renderer =
+                HtmlRenderer.builder()
+                        .attributeProviderFactory(context -> new TableAttributeProvider())
+                        .extensions(extensions)
+                        .build();
+
         String htmlContent = renderer.render(document);
 
-        byte[] pdfBytes = FileToPdf.convertHtmlToPdf(htmlContent.getBytes(), "converted.html"); 
+        byte[] pdfBytes =
+                FileToPdf.convertHtmlToPdf(
+                        null, htmlContent.getBytes(), "converted.html", htmlFormatsInstalled);
 
-        String outputFilename = originalFilename.replaceFirst("[.][^.]+$", "") + ".pdf";  // Remove file extension and append .pdf
+        String outputFilename =
+                originalFilename.replaceFirst("[.][^.]+$", "")
+                        + ".pdf"; // Remove file extension and append .pdf
         return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
     }
 }
+
+class TableAttributeProvider implements AttributeProvider {
+    @Override
+    public void setAttributes(Node node, String tagName, Map<String, String> attributes) {
+        if (node instanceof TableBlock) {
+            attributes.put("class", "table table-striped");
+        }
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertOfficeController.java

@@ -18,6 +18,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.GeneralFile;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
@@ -31,20 +32,33 @@ public class ConvertOfficeController {
     public byte[] convertToPdf(MultipartFile inputFile) throws IOException, InterruptedException {
         // Check for valid file extension
         String originalFilename = inputFile.getOriginalFilename();
-        if (originalFilename == null || !isValidFileExtension(FilenameUtils.getExtension(originalFilename))) {
+        if (originalFilename == null
+                || !isValidFileExtension(FilenameUtils.getExtension(originalFilename))) {
             throw new IllegalArgumentException("Invalid file extension");
         }
 
         // Save the uploaded file to a temporary location
-        Path tempInputFile = Files.createTempFile("input_", "." + FilenameUtils.getExtension(originalFilename));
+        Path tempInputFile =
+                Files.createTempFile("input_", "." + FilenameUtils.getExtension(originalFilename));
         Files.copy(inputFile.getInputStream(), tempInputFile, StandardCopyOption.REPLACE_EXISTING);
 
         // Prepare the output file path
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
 
         // Run the LibreOffice command
-        List<String> command = new ArrayList<>(Arrays.asList("unoconv", "-vvv", "-f", "pdf", "-o", tempOutputFile.toString(), tempInputFile.toString()));
+        List<String> command =
-        ProcessExecutorResult returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.LIBRE_OFFICE).runCommandWithOutputHandling(command);
+                new ArrayList<>(
+                        Arrays.asList(
+                                "unoconv",
+                                "-vvv",
+                                "-f",
+                                "pdf",
+                                "-o",
+                                tempOutputFile.toString(),
+                                tempInputFile.toString()));
+        ProcessExecutorResult returnCode =
+                ProcessExecutor.getInstance(ProcessExecutor.Processes.LIBRE_OFFICE)
+                        .runCommandWithOutputHandling(command);
 
         // Read the converted PDF file
         byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
@@ -55,6 +69,7 @@ public class ConvertOfficeController {
 
         return pdfBytes;
     }
+
     private boolean isValidFileExtension(String fileExtension) {
         String extensionPattern = "^(?i)[a-z0-9]{2,4}$";
         return fileExtension.matches(extensionPattern);
@@ -62,17 +77,19 @@ public class ConvertOfficeController {
 
     @PostMapping(consumes = "multipart/form-data", value = "/file/pdf")
     @Operation(
-        summary = "Convert a file to a PDF using LibreOffice",
+            summary = "Convert a file to a PDF using LibreOffice",
-        description = "This endpoint converts a given file to a PDF using LibreOffice API  Input:Any Output:PDF Type:SISO"
+            description =
-    )
+                    "This endpoint converts a given file to a PDF using LibreOffice API  Input:ANY Output:PDF Type:SISO")
     public ResponseEntity<byte[]> processFileToPDF(@ModelAttribute GeneralFile request)
-	        throws Exception {
+            throws Exception {
-		MultipartFile inputFile = request.getFileInput();
+        MultipartFile inputFile = request.getFileInput();
         // unused but can start server instance if startup time is to long
         // LibreOfficeListener.getInstance().start();
 
         byte[] pdfByteArray = convertToPdf(inputFile);
-        return WebResponseUtils.bytesToWebResponse(pdfByteArray, inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_convertedToPDF.pdf");
+        return WebResponseUtils.bytesToWebResponse(
+                pdfByteArray,
+                inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                        + "_convertedToPDF.pdf");
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToBookController.java

@@ -0,0 +1,101 @@
+package stirling.software.SPDF.controller.api.converters;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.api.converters.PdfToBookRequest;
+import stirling.software.SPDF.utils.ProcessExecutor;
+import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@Tag(name = "Convert", description = "Convert APIs")
+@RequestMapping("/api/v1/convert")
+public class ConvertPDFToBookController {
+
+    @Autowired
+    @Qualifier("bookFormatsInstalled")
+    private boolean bookFormatsInstalled;
+
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/book")
+    @Operation(
+            summary =
+                    "Convert a PDF to a Book/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx .. (others to include by chatgpt) to PDF",
+            description =
+                    "(Requires bookFormatsInstalled flag and Calibre installed) This endpoint Convert a PDF to a Book/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx .. (others to include by chatgpt) to PDF")
+    public ResponseEntity<byte[]> HtmlToPdf(@ModelAttribute PdfToBookRequest request)
+            throws Exception {
+        MultipartFile fileInput = request.getFileInput();
+
+        if (!bookFormatsInstalled) {
+            throw new IllegalArgumentException(
+                    "bookFormatsInstalled flag is False, this functionality is not avaiable");
+        }
+
+        if (fileInput == null) {
+            throw new IllegalArgumentException("Please provide a file for conversion.");
+        }
+
+        // Validate the output format
+        String outputFormat = request.getOutputFormat().toLowerCase();
+        List<String> allowedFormats =
+                Arrays.asList(
+                        "epub", "mobi", "azw3", "docx", "rtf", "txt", "html", "lit", "fb2", "pdb",
+                        "lrf");
+        if (!allowedFormats.contains(outputFormat)) {
+            throw new IllegalArgumentException("Invalid output format: " + outputFormat);
+        }
+
+        byte[] outputFileBytes;
+        List<String> command = new ArrayList<>();
+        Path tempOutputFile =
+                Files.createTempFile(
+                        "output_",
+                        "." + outputFormat); // Use the output format for the file extension
+        Path tempInputFile = null;
+
+        try {
+            // Create temp input file from the provided PDF
+            tempInputFile = Files.createTempFile("input_", ".pdf"); // Assuming input is always PDF
+            Files.write(tempInputFile, fileInput.getBytes());
+
+            command.add("ebook-convert");
+            command.add(tempInputFile.toString());
+            command.add(tempOutputFile.toString());
+
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.CALIBRE)
+                            .runCommandWithOutputHandling(command);
+
+            outputFileBytes = Files.readAllBytes(tempOutputFile);
+        } finally {
+            // Clean up temporary files
+            if (tempInputFile != null) {
+                Files.deleteIfExists(tempInputFile);
+            }
+            Files.deleteIfExists(tempOutputFile);
+        }
+
+        String outputFilename =
+                fileInput.getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                        + "."
+                        + outputFormat; // Remove file extension and append .pdf
+
+        return WebResponseUtils.bytesToWebResponse(outputFileBytes, outputFilename);
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToOffice.java

@@ -11,6 +11,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFFile;
 import stirling.software.SPDF.model.api.converters.PdfToPresentationRequest;
 import stirling.software.SPDF.model.api.converters.PdfToTextOrRTFRequest;
@@ -22,51 +23,70 @@ import stirling.software.SPDF.utils.PDFToFile;
 @Tag(name = "Convert", description = "Convert APIs")
 public class ConvertPDFToOffice {
 
-	@PostMapping(consumes = "multipart/form-data", value = "/pdf/html")
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/html")
-	@Operation(summary = "Convert PDF to HTML", description = "This endpoint converts a PDF file to HTML format. Input:PDF Output:HTML Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> processPdfToHTML(@ModelAttribute PDFFile request) 
+            summary = "Convert PDF to HTML",
-	        throws Exception {
+            description =
-		MultipartFile inputFile = request.getFileInput();
+                    "This endpoint converts a PDF file to HTML format. Input:PDF Output:HTML Type:SISO")
-		PDFToFile pdfToFile = new PDFToFile();
+    public ResponseEntity<byte[]> processPdfToHTML(@ModelAttribute PDFFile request)
-		return pdfToFile.processPdfToOfficeFormat(inputFile, "html", "writer_pdf_import");
+            throws Exception {
-	}
+        MultipartFile inputFile = request.getFileInput();
+        PDFToFile pdfToFile = new PDFToFile();
+        return pdfToFile.processPdfToOfficeFormat(inputFile, "html", "writer_pdf_import");
+    }
 
-	@PostMapping(consumes = "multipart/form-data", value = "/pdf/presentation")
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/presentation")
-	@Operation(summary = "Convert PDF to Presentation format", description = "This endpoint converts a given PDF file to a Presentation format. Input:PDF Output:PPT Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> processPdfToPresentation(@ModelAttribute PdfToPresentationRequest request) throws IOException, InterruptedException {
+            summary = "Convert PDF to Presentation format",
-	    MultipartFile inputFile = request.getFileInput();
+            description =
-	    String outputFormat = request.getOutputFormat();
+                    "This endpoint converts a given PDF file to a Presentation format. Input:PDF Output:PPT Type:SISO")
-		PDFToFile pdfToFile = new PDFToFile();
+    public ResponseEntity<byte[]> processPdfToPresentation(
-		return pdfToFile.processPdfToOfficeFormat(inputFile, outputFormat, "impress_pdf_import");
+            @ModelAttribute PdfToPresentationRequest request)
-	}
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
+        String outputFormat = request.getOutputFormat();
+        PDFToFile pdfToFile = new PDFToFile();
+        return pdfToFile.processPdfToOfficeFormat(inputFile, outputFormat, "impress_pdf_import");
+    }
 
-	@PostMapping(consumes = "multipart/form-data", value = "/pdf/text")
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/text")
-	@Operation(summary = "Convert PDF to Text or RTF format", description = "This endpoint converts a given PDF file to Text or RTF format. Input:PDF Output:TXT Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> processPdfToRTForTXT(@ModelAttribute PdfToTextOrRTFRequest request) throws IOException, InterruptedException {
+            summary = "Convert PDF to Text or RTF format",
-	    MultipartFile inputFile = request.getFileInput();
+            description =
-	    String outputFormat = request.getOutputFormat();
+                    "This endpoint converts a given PDF file to Text or RTF format. Input:PDF Output:TXT Type:SISO")
+    public ResponseEntity<byte[]> processPdfToRTForTXT(
+            @ModelAttribute PdfToTextOrRTFRequest request)
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
+        String outputFormat = request.getOutputFormat();
 
-		PDFToFile pdfToFile = new PDFToFile();
+        PDFToFile pdfToFile = new PDFToFile();
-		return pdfToFile.processPdfToOfficeFormat(inputFile, outputFormat, "writer_pdf_import");
+        return pdfToFile.processPdfToOfficeFormat(inputFile, outputFormat, "writer_pdf_import");
-	}
+    }
 
-	@PostMapping(consumes = "multipart/form-data", value = "/pdf/word")
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/word")
-	@Operation(summary = "Convert PDF to Word document", description = "This endpoint converts a given PDF file to a Word document format. Input:PDF Output:WORD Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> processPdfToWord(@ModelAttribute PdfToWordRequest request) throws IOException, InterruptedException {
+            summary = "Convert PDF to Word document",
-	    MultipartFile inputFile = request.getFileInput();
+            description =
-	    String outputFormat = request.getOutputFormat();
+                    "This endpoint converts a given PDF file to a Word document format. Input:PDF Output:WORD Type:SISO")
-		PDFToFile pdfToFile = new PDFToFile();
+    public ResponseEntity<byte[]> processPdfToWord(@ModelAttribute PdfToWordRequest request)
-		return pdfToFile.processPdfToOfficeFormat(inputFile, outputFormat, "writer_pdf_import");
+            throws IOException, InterruptedException {
-	}
+        MultipartFile inputFile = request.getFileInput();
+        String outputFormat = request.getOutputFormat();
+        PDFToFile pdfToFile = new PDFToFile();
+        return pdfToFile.processPdfToOfficeFormat(inputFile, outputFormat, "writer_pdf_import");
+    }
 
-	@PostMapping(consumes = "multipart/form-data", value = "/pdf/xml")
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/xml")
-	@Operation(summary = "Convert PDF to XML", description = "This endpoint converts a PDF file to an XML file. Input:PDF Output:XML Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> processPdfToXML(@ModelAttribute PDFFile request) 
+            summary = "Convert PDF to XML",
-	        throws Exception {
+            description =
-		MultipartFile inputFile = request.getFileInput();
+                    "This endpoint converts a PDF file to an XML file. Input:PDF Output:XML Type:SISO")
-
+    public ResponseEntity<byte[]> processPdfToXML(@ModelAttribute PDFFile request)
-		PDFToFile pdfToFile = new PDFToFile();
+            throws Exception {
-		return pdfToFile.processPdfToOfficeFormat(inputFile, "xml", "writer_pdf_import");
+        MultipartFile inputFile = request.getFileInput();
-	}
 
+        PDFToFile pdfToFile = new PDFToFile();
+        return pdfToFile.processPdfToOfficeFormat(inputFile, "xml", "writer_pdf_import");
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToPDFA.java

@@ -14,6 +14,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFFile;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
@@ -24,14 +25,13 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Convert", description = "Convert APIs")
 public class ConvertPDFToPDFA {
 
-	@PostMapping(consumes = "multipart/form-data", value = "/pdf/pdfa")
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/pdfa")
-	@Operation(
+    @Operation(
-	    summary = "Convert a PDF to a PDF/A",
+            summary = "Convert a PDF to a PDF/A",
-	    description = "This endpoint converts a PDF file to a PDF/A file. PDF/A is a format designed for long-term archiving of digital documents. Input:PDF Output:PDF Type:SISO"
+            description =
-	)
+                    "This endpoint converts a PDF file to a PDF/A file. PDF/A is a format designed for long-term archiving of digital documents. Input:PDF Output:PDF Type:SISO")
-	public ResponseEntity<byte[]> pdfToPdfA(@ModelAttribute PDFFile request) 
+    public ResponseEntity<byte[]> pdfToPdfA(@ModelAttribute PDFFile request) throws Exception {
-	        throws Exception {
+        MultipartFile inputFile = request.getFileInput();
-		MultipartFile inputFile = request.getFileInput();
 
         // Save the uploaded file to a temporary location
         Path tempInputFile = Files.createTempFile("input_", ".pdf");
@@ -50,7 +50,9 @@ public class ConvertPDFToPDFA {
         command.add(tempInputFile.toString());
         command.add(tempOutputFile.toString());
 
-        ProcessExecutorResult returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF).runCommandWithOutputHandling(command);
+        ProcessExecutorResult returnCode =
+                ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
+                        .runCommandWithOutputHandling(command);
 
         // Read the optimized PDF file
         byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
@@ -60,8 +62,8 @@ public class ConvertPDFToPDFA {
         Files.delete(tempOutputFile);
 
         // Return the optimized PDF as a response
-        String outputFilename = inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_PDFA.pdf";
+        String outputFilename =
+                inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_PDFA.pdf";
         return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertWebsiteToPDF.java

@@ -6,6 +6,8 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -14,6 +16,7 @@ import org.springframework.web.bind.annotation.RestController;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.converters.UrlToPdfRequest;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.ProcessExecutor;
@@ -25,52 +28,60 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertWebsiteToPDF {
 
-	@PostMapping(consumes = "multipart/form-data", value = "/url/pdf")
+    @Autowired
-	@Operation(
+    @Qualifier("htmlFormatsInstalled")
-	    summary = "Convert a URL to a PDF",
+    private boolean htmlFormatsInstalled;
-	    description = "This endpoint fetches content from a URL and converts it to a PDF format. Input:N/A Output:PDF Type:SISO"
-	)
-	public ResponseEntity<byte[]> urlToPdf(@ModelAttribute UrlToPdfRequest request) throws IOException, InterruptedException {
-	    String URL = request.getUrlInput();
 
-	    // Validate the URL format
+    @PostMapping(consumes = "multipart/form-data", value = "/url/pdf")
-	    if(!URL.matches("^https?://.*") || !GeneralUtils.isValidURL(URL)) {
+    @Operation(
-	        throw new IllegalArgumentException("Invalid URL format provided.");
+            summary = "Convert a URL to a PDF",
-	    }
+            description =
-	    Path tempOutputFile = null;
+                    "This endpoint fetches content from a URL and converts it to a PDF format. Input:N/A Output:PDF Type:SISO")
-	    byte[] pdfBytes;
+    public ResponseEntity<byte[]> urlToPdf(@ModelAttribute UrlToPdfRequest request)
-	    try {
+            throws IOException, InterruptedException {
-		    // Prepare the output file path
+        String URL = request.getUrlInput();
-		    tempOutputFile = Files.createTempFile("output_", ".pdf");
 
-		    // Prepare the OCRmyPDF command
+        // Validate the URL format
-		    List<String> command = new ArrayList<>();
+        if (!URL.matches("^https?://.*") || !GeneralUtils.isValidURL(URL)) {
-		    command.add("weasyprint");
+            throw new IllegalArgumentException("Invalid URL format provided.");
-		    command.add(URL);
+        }
-		    command.add(tempOutputFile.toString());
+        Path tempOutputFile = null;
+        byte[] pdfBytes;
+        try {
+            // Prepare the output file path
+            tempOutputFile = Files.createTempFile("output_", ".pdf");
 
-		    ProcessExecutorResult returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.WEASYPRINT).runCommandWithOutputHandling(command);
+            // Prepare the OCRmyPDF command
+            List<String> command = new ArrayList<>();
+            if (!htmlFormatsInstalled) {
+                command.add("weasyprint");
+            } else {
+                command.add("wkhtmltopdf");
+            }
+            command.add(URL);
+            command.add(tempOutputFile.toString());
 
-		    // Read the optimized PDF file
+            ProcessExecutorResult returnCode =
-		    pdfBytes = Files.readAllBytes(tempOutputFile);
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.WEASYPRINT)
-	    }
+                            .runCommandWithOutputHandling(command);
-	    finally {
-		    // Clean up the temporary files
-		    Files.delete(tempOutputFile);
-	    }
-	    // Convert URL to a safe filename
-	    String outputFilename = convertURLToFileName(URL);
 
-	    return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+            // Read the optimized PDF file
-	}
+            pdfBytes = Files.readAllBytes(tempOutputFile);
-
+        } finally {
-	private String convertURLToFileName(String url) {
+            // Clean up the temporary files
-	    String safeName = url.replaceAll("[^a-zA-Z0-9]", "_");
+            Files.delete(tempOutputFile);
-	    if(safeName.length() > 50) {
+        }
-	        safeName = safeName.substring(0, 50); // restrict to 50 characters
+        // Convert URL to a safe filename
-	    }
+        String outputFilename = convertURLToFileName(URL);
-	    return safeName + ".pdf";
-	}
 
+        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+    }
 
+    private String convertURLToFileName(String url) {
+        String safeName = url.replaceAll("[^a-zA-Z0-9]", "_");
+        if (safeName.length() > 50) {
+            safeName = safeName.substring(0, 50); // restrict to 50 characters
+        }
+        return safeName + ".pdf";
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/converters/ExtractController.java

@@ -1,10 +1,10 @@
 package stirling.software.SPDF.controller.api.converters;
 
-import java.io.ByteArrayInputStream;
 import java.io.StringWriter;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.slf4j.Logger;
@@ -22,6 +22,7 @@ import com.opencsv.CSVWriter;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.controller.api.CropController;
 import stirling.software.SPDF.controller.api.strippers.PDFTableStripper;
 import stirling.software.SPDF.model.api.extract.PDFFilePage;
@@ -34,21 +35,23 @@ public class ExtractController {
     private static final Logger logger = LoggerFactory.getLogger(CropController.class);
 
     @PostMapping(value = "/pdf/csv", consumes = "multipart/form-data")
-    @Operation(summary = "Extracts a PDF document to csv", description = "This operation takes an input PDF file and returns CSV file of whole page. Input:PDF Output:CSV Type:SISO")
+    @Operation(
-    public ResponseEntity<String> PdfToCsv(@ModelAttribute PDFFilePage form)
+            summary = "Extracts a PDF document to csv",
-            throws Exception {
+            description =
+                    "This operation takes an input PDF file and returns CSV file of whole page. Input:PDF Output:CSV Type:SISO")
+    public ResponseEntity<String> PdfToCsv(@ModelAttribute PDFFilePage form) throws Exception {
 
         ArrayList<String> tableData = new ArrayList<>();
         int columnsCount = 0;
 
-        try (PDDocument document = PDDocument.load(new ByteArrayInputStream(form.getFileInput().getBytes()))) {
+        try (PDDocument document = Loader.loadPDF(form.getFileInput().getBytes())) {
             final double res = 72; // PDF units are at 72 DPI
             PDFTableStripper stripper = new PDFTableStripper();
             PDPage pdPage = document.getPage(form.getPageId() - 1);
             stripper.extractTable(pdPage);
             columnsCount = stripper.getColumns();
             for (int c = 0; c < columnsCount; ++c) {
-                for(int r=0; r<stripper.getRows(); ++r) {
+                for (int r = 0; r < stripper.getRows(); ++r) {
                     tableData.add(stripper.getText(r, c));
                 }
             }
@@ -56,24 +59,31 @@ public class ExtractController {
 
         ArrayList<String> notEmptyColumns = new ArrayList<>();
 
-        for (String item: tableData) {
+        for (String item : tableData) {
-            if(!item.trim().isEmpty()){
+            if (!item.trim().isEmpty()) {
                 notEmptyColumns.add(item);
-            }else{
+            } else {
                 columnsCount--;
             }
         }
 
-        List<String> fullTable  =  notEmptyColumns.stream().map((entity)->
+        List<String> fullTable =
-            entity.replace('\n',' ').replace('\r',' ').trim().replaceAll("\\s{2,}", "|")).toList();
+                notEmptyColumns.stream()
+                        .map(
+                                (entity) ->
+                                        entity.replace('\n', ' ')
+                                                .replace('\r', ' ')
+                                                .trim()
+                                                .replaceAll("\\s{2,}", "|"))
+                        .toList();
 
         int rowsCount = fullTable.get(0).split("\\|").length;
 
-        ArrayList<String> headersList = getTableHeaders(columnsCount,fullTable);
+        ArrayList<String> headersList = getTableHeaders(columnsCount, fullTable);
-        ArrayList<String> recordList = getRecordsList(rowsCount,fullTable);
+        ArrayList<String> recordList = getRecordsList(rowsCount, fullTable);
 
-        if(headersList.size() == 0 && recordList.size() == 0) {
+        if (headersList.size() == 0 && recordList.size() == 0) {
-        	throw new Exception("No table detected, no headers or records found");
+            throw new Exception("No table detected, no headers or records found");
         }
 
         StringWriter writer = new StringWriter();
@@ -85,35 +95,41 @@ public class ExtractController {
         }
 
         HttpHeaders headers = new HttpHeaders();
-        headers.setContentDisposition(ContentDisposition.builder("attachment").filename(form.getFileInput().getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_extracted.csv").build());
+        headers.setContentDisposition(
+                ContentDisposition.builder("attachment")
+                        .filename(
+                                form.getFileInput()
+                                                .getOriginalFilename()
+                                                .replaceFirst("[.][^.]+$", "")
+                                        + "_extracted.csv")
+                        .build());
         headers.setContentType(MediaType.parseMediaType("text/csv"));
 
-        return ResponseEntity.ok()
+        return ResponseEntity.ok().headers(headers).body(writer.toString());
-                .headers(headers)
-                .body(writer.toString());
     }
 
-    private ArrayList<String> getRecordsList( int rowsCounts ,List<String> items){
+    private ArrayList<String> getRecordsList(int rowsCounts, List<String> items) {
         ArrayList<String> recordsList = new ArrayList<>();
 
-            for (int b=1; b<rowsCounts;b++) {
+        for (int b = 1; b < rowsCounts; b++) {
-                StringBuilder strbldr = new StringBuilder();
+            StringBuilder strbldr = new StringBuilder();
 
-                for (int i=0;i<items.size();i++){
+            for (int i = 0; i < items.size(); i++) {
-                    String[] parts = items.get(i).split("\\|");
+                String[] parts = items.get(i).split("\\|");
-                    strbldr.append(parts[b]);
+                strbldr.append(parts[b]);
-                    if (i!= items.size()-1){
+                if (i != items.size() - 1) {
-                        strbldr.append("|");
+                    strbldr.append("|");
-                    }
                 }
-                recordsList.add(strbldr.toString());
             }
+            recordsList.add(strbldr.toString());
+        }
 
         return recordsList;
     }
-    private ArrayList<String> getTableHeaders(int columnsCount, List<String> items){
+
+    private ArrayList<String> getTableHeaders(int columnsCount, List<String> items) {
         ArrayList<String> resultList = new ArrayList<>();
-        for (int i=0;i<columnsCount;i++){
+        for (int i = 0; i < columnsCount; i++) {
             String[] parts = items.get(i).split("\\|");
             resultList.add(parts[0]);
         }

src/main/java/stirling/software/SPDF/controller/api/filters/FilterController.java

@@ -2,6 +2,7 @@ package stirling.software.SPDF.controller.api.filters;
 
 import java.io.IOException;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.common.PDRectangle;
@@ -14,6 +15,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFComparisonAndCount;
 import stirling.software.SPDF.model.api.PDFWithPageNums;
 import stirling.software.SPDF.model.api.filter.ContainsTextRequest;
@@ -28,169 +30,182 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Filter", description = "Filter APIs")
 public class FilterController {
 
-	@PostMapping(consumes = "multipart/form-data", value = "/filter-contains-text")
+    @PostMapping(consumes = "multipart/form-data", value = "/filter-contains-text")
-	@Operation(summary = "Checks if a PDF contains set text, returns true if does", description = "Input:PDF Output:Boolean Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> containsText(@ModelAttribute ContainsTextRequest request) throws IOException, InterruptedException {
+            summary = "Checks if a PDF contains set text, returns true if does",
-	    MultipartFile inputFile = request.getFileInput();
+            description = "Input:PDF Output:Boolean Type:SISO")
-	    String text = request.getText();
+    public ResponseEntity<byte[]> containsText(@ModelAttribute ContainsTextRequest request)
-	    String pageNumber = request.getPageNumbers();
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
+        String text = request.getText();
+        String pageNumber = request.getPageNumbers();
 
-		PDDocument pdfDocument = PDDocument.load(inputFile.getInputStream());
+        PDDocument pdfDocument = Loader.loadPDF(inputFile.getBytes());
-		if (PdfUtils.hasText(pdfDocument, pageNumber, text))
+        if (PdfUtils.hasText(pdfDocument, pageNumber, text))
-			return WebResponseUtils.pdfDocToWebResponse(pdfDocument, inputFile.getOriginalFilename());
+            return WebResponseUtils.pdfDocToWebResponse(
-		return null;
+                    pdfDocument, inputFile.getOriginalFilename());
-	}
+        return null;
+    }
 
-	// TODO
+    // TODO
-	@PostMapping(consumes = "multipart/form-data", value = "/filter-contains-image")
+    @PostMapping(consumes = "multipart/form-data", value = "/filter-contains-image")
-	@Operation(summary = "Checks if a PDF contains an image", description = "Input:PDF Output:Boolean Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> containsImage(@ModelAttribute PDFWithPageNums request)
+            summary = "Checks if a PDF contains an image",
-			throws IOException, InterruptedException {
+            description = "Input:PDF Output:Boolean Type:SISO")
-		MultipartFile inputFile = request.getFileInput();
+    public ResponseEntity<byte[]> containsImage(@ModelAttribute PDFWithPageNums request)
-	    String pageNumber = request.getPageNumbers();
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
+        String pageNumber = request.getPageNumbers();
 
-		PDDocument pdfDocument = PDDocument.load(inputFile.getInputStream());
+        PDDocument pdfDocument = Loader.loadPDF(inputFile.getBytes());
-		if (PdfUtils.hasImages(pdfDocument, pageNumber))
+        if (PdfUtils.hasImages(pdfDocument, pageNumber))
-			return WebResponseUtils.pdfDocToWebResponse(pdfDocument, inputFile.getOriginalFilename());
+            return WebResponseUtils.pdfDocToWebResponse(
-		return null;
+                    pdfDocument, inputFile.getOriginalFilename());
-	}
+        return null;
+    }
 
-	@PostMapping(consumes = "multipart/form-data", value = "/filter-page-count")
+    @PostMapping(consumes = "multipart/form-data", value = "/filter-page-count")
-	@Operation(summary = "Checks if a PDF is greater, less or equal to a setPageCount", description = "Input:PDF Output:Boolean Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> pageCount(@ModelAttribute PDFComparisonAndCount request) throws IOException, InterruptedException {
+            summary = "Checks if a PDF is greater, less or equal to a setPageCount",
-	    MultipartFile inputFile = request.getFileInput();
+            description = "Input:PDF Output:Boolean Type:SISO")
-	    String pageCount = request.getPageCount();
+    public ResponseEntity<byte[]> pageCount(@ModelAttribute PDFComparisonAndCount request)
-	    String comparator = request.getComparator();
+            throws IOException, InterruptedException {
-		// Load the PDF
+        MultipartFile inputFile = request.getFileInput();
-		PDDocument document = PDDocument.load(inputFile.getInputStream());
+        String pageCount = request.getPageCount();
-		int actualPageCount = document.getNumberOfPages();
+        String comparator = request.getComparator();
+        // Load the PDF
+        PDDocument document = Loader.loadPDF(inputFile.getBytes());
+        int actualPageCount = document.getNumberOfPages();
 
-		boolean valid = false;
+        boolean valid = false;
-		// Perform the comparison
+        // Perform the comparison
-		switch (comparator) {
+        switch (comparator) {
-		case "Greater":
+            case "Greater":
-			valid = actualPageCount > Integer.parseInt(pageCount);
+                valid = actualPageCount > Integer.parseInt(pageCount);
-			break;
+                break;
-		case "Equal":
+            case "Equal":
-			valid = actualPageCount == Integer.parseInt(pageCount);
+                valid = actualPageCount == Integer.parseInt(pageCount);
-			break;
+                break;
-		case "Less":
+            case "Less":
-			valid = actualPageCount < Integer.parseInt(pageCount);
+                valid = actualPageCount < Integer.parseInt(pageCount);
-			break;
+                break;
-		default:
+            default:
-			throw new IllegalArgumentException("Invalid comparator: " + comparator);
+                throw new IllegalArgumentException("Invalid comparator: " + comparator);
-		}
+        }
 
-		if (valid)
+        if (valid) return WebResponseUtils.multiPartFileToWebResponse(inputFile);
-			return WebResponseUtils.multiPartFileToWebResponse(inputFile);
+        return null;
-		return null;
+    }
-	}
 
-	@PostMapping(consumes = "multipart/form-data", value = "/filter-page-size")
+    @PostMapping(consumes = "multipart/form-data", value = "/filter-page-size")
-	@Operation(summary = "Checks if a PDF is of a certain size", description = "Input:PDF Output:Boolean Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> pageSize(@ModelAttribute PageSizeRequest request) throws IOException, InterruptedException {
+            summary = "Checks if a PDF is of a certain size",
-	    MultipartFile inputFile = request.getFileInput();
+            description = "Input:PDF Output:Boolean Type:SISO")
-	    String standardPageSize = request.getStandardPageSize();
+    public ResponseEntity<byte[]> pageSize(@ModelAttribute PageSizeRequest request)
-	    String comparator = request.getComparator();
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
+        String standardPageSize = request.getStandardPageSize();
+        String comparator = request.getComparator();
 
-		// Load the PDF
+        // Load the PDF
-		PDDocument document = PDDocument.load(inputFile.getInputStream());
+        PDDocument document = Loader.loadPDF(inputFile.getBytes());
 
-		PDPage firstPage = document.getPage(0);
+        PDPage firstPage = document.getPage(0);
-		PDRectangle actualPageSize = firstPage.getMediaBox();
+        PDRectangle actualPageSize = firstPage.getMediaBox();
 
-		// Calculate the area of the actual page size
+        // Calculate the area of the actual page size
-		float actualArea = actualPageSize.getWidth() * actualPageSize.getHeight();
+        float actualArea = actualPageSize.getWidth() * actualPageSize.getHeight();
 
-		// Get the standard size and calculate its area
+        // Get the standard size and calculate its area
-		PDRectangle standardSize = PdfUtils.textToPageSize(standardPageSize);
+        PDRectangle standardSize = PdfUtils.textToPageSize(standardPageSize);
-		float standardArea = standardSize.getWidth() * standardSize.getHeight();
+        float standardArea = standardSize.getWidth() * standardSize.getHeight();
 
-		boolean valid = false;
+        boolean valid = false;
-		// Perform the comparison
+        // Perform the comparison
-		switch (comparator) {
+        switch (comparator) {
-		case "Greater":
+            case "Greater":
-			valid = actualArea > standardArea;
+                valid = actualArea > standardArea;
-			break;
+                break;
-		case "Equal":
+            case "Equal":
-			valid = actualArea == standardArea;
+                valid = actualArea == standardArea;
-			break;
+                break;
-		case "Less":
+            case "Less":
-			valid = actualArea < standardArea;
+                valid = actualArea < standardArea;
-			break;
+                break;
-		default:
+            default:
-			throw new IllegalArgumentException("Invalid comparator: " + comparator);
+                throw new IllegalArgumentException("Invalid comparator: " + comparator);
-		}
+        }
 
-		if (valid)
+        if (valid) return WebResponseUtils.multiPartFileToWebResponse(inputFile);
-			return WebResponseUtils.multiPartFileToWebResponse(inputFile);
+        return null;
-		return null;
+    }
-	}
 
-	@PostMapping(consumes = "multipart/form-data", value = "/filter-file-size")
+    @PostMapping(consumes = "multipart/form-data", value = "/filter-file-size")
-	@Operation(summary = "Checks if a PDF is a set file size", description = "Input:PDF Output:Boolean Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> fileSize(@ModelAttribute FileSizeRequest request) throws IOException, InterruptedException {
+            summary = "Checks if a PDF is a set file size",
-	    MultipartFile inputFile = request.getFileInput();
+            description = "Input:PDF Output:Boolean Type:SISO")
-	    String fileSize = request.getFileSize();
+    public ResponseEntity<byte[]> fileSize(@ModelAttribute FileSizeRequest request)
-	    String comparator = request.getComparator();
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
+        String fileSize = request.getFileSize();
+        String comparator = request.getComparator();
 
-		// Get the file size
+        // Get the file size
-		long actualFileSize = inputFile.getSize();
+        long actualFileSize = inputFile.getSize();
 
-		boolean valid = false;
+        boolean valid = false;
-		// Perform the comparison
+        // Perform the comparison
-		switch (comparator) {
+        switch (comparator) {
-		case "Greater":
+            case "Greater":
-			valid = actualFileSize > Long.parseLong(fileSize);
+                valid = actualFileSize > Long.parseLong(fileSize);
-			break;
+                break;
-		case "Equal":
+            case "Equal":
-			valid = actualFileSize == Long.parseLong(fileSize);
+                valid = actualFileSize == Long.parseLong(fileSize);
-			break;
+                break;
-		case "Less":
+            case "Less":
-			valid = actualFileSize < Long.parseLong(fileSize);
+                valid = actualFileSize < Long.parseLong(fileSize);
-			break;
+                break;
-		default:
+            default:
-			throw new IllegalArgumentException("Invalid comparator: " + comparator);
+                throw new IllegalArgumentException("Invalid comparator: " + comparator);
-		}
+        }
 
-		if (valid)
+        if (valid) return WebResponseUtils.multiPartFileToWebResponse(inputFile);
-			return WebResponseUtils.multiPartFileToWebResponse(inputFile);
+        return null;
-		return null;
+    }
-	}
 
-	@PostMapping(consumes = "multipart/form-data", value = "/filter-page-rotation")
+    @PostMapping(consumes = "multipart/form-data", value = "/filter-page-rotation")
-	@Operation(summary = "Checks if a PDF is of a certain rotation", description = "Input:PDF Output:Boolean Type:SISO")
+    @Operation(
-	public ResponseEntity<byte[]> pageRotation(@ModelAttribute PageRotationRequest request) throws IOException, InterruptedException {
+            summary = "Checks if a PDF is of a certain rotation",
-	    MultipartFile inputFile = request.getFileInput();
+            description = "Input:PDF Output:Boolean Type:SISO")
-	    int rotation = request.getRotation();
+    public ResponseEntity<byte[]> pageRotation(@ModelAttribute PageRotationRequest request)
-	    String comparator = request.getComparator();
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
+        int rotation = request.getRotation();
+        String comparator = request.getComparator();
 
-		// Load the PDF
+        // Load the PDF
-		PDDocument document = PDDocument.load(inputFile.getInputStream());
+        PDDocument document = Loader.loadPDF(inputFile.getBytes());
 
-		// Get the rotation of the first page
+        // Get the rotation of the first page
-		PDPage firstPage = document.getPage(0);
+        PDPage firstPage = document.getPage(0);
-		int actualRotation = firstPage.getRotation();
+        int actualRotation = firstPage.getRotation();
-		boolean valid = false;
+        boolean valid = false;
-		// Perform the comparison
+        // Perform the comparison
-		switch (comparator) {
+        switch (comparator) {
-		case "Greater":
+            case "Greater":
-			valid = actualRotation > rotation;
+                valid = actualRotation > rotation;
-			break;
+                break;
-		case "Equal":
+            case "Equal":
-			valid = actualRotation == rotation;
+                valid = actualRotation == rotation;
-			break;
+                break;
-		case "Less":
+            case "Less":
-			valid = actualRotation < rotation;
+                valid = actualRotation < rotation;
-			break;
+                break;
-		default:
+            default:
-			throw new IllegalArgumentException("Invalid comparator: " + comparator);
+                throw new IllegalArgumentException("Invalid comparator: " + comparator);
-		}
+        }
-
-		if (valid)
-			return WebResponseUtils.multiPartFileToWebResponse(inputFile);
-		return null;
-
-	}
 
+        if (valid) return WebResponseUtils.multiPartFileToWebResponse(inputFile);
+        return null;
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/misc/AutoRenameController.java

@@ -5,6 +5,7 @@ import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.text.PDFTextStripper;
 import org.apache.pdfbox.text.TextPosition;
@@ -19,8 +20,10 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.ExtractHeaderRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/misc")
 @Tag(name = "Misc", description = "Miscellaneous APIs")
@@ -32,97 +35,105 @@ public class AutoRenameController {
     private static final int LINE_LIMIT = 11;
 
     @PostMapping(consumes = "multipart/form-data", value = "/auto-rename")
-    @Operation(summary = "Extract header from PDF file", description = "This endpoint accepts a PDF file and attempts to extract its title or header based on heuristics. Input:PDF Output:PDF Type:SISO")
+    @Operation(
-    public ResponseEntity<byte[]> extractHeader(@ModelAttribute ExtractHeaderRequest request) throws Exception {
+            summary = "Extract header from PDF file",
+            description =
+                    "This endpoint accepts a PDF file and attempts to extract its title or header based on heuristics. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> extractHeader(@ModelAttribute ExtractHeaderRequest request)
+            throws Exception {
         MultipartFile file = request.getFileInput();
         Boolean useFirstTextAsFallback = request.isUseFirstTextAsFallback();
 
-    	        PDDocument document = PDDocument.load(file.getInputStream());
+        PDDocument document = Loader.loadPDF(file.getBytes());
-    	        PDFTextStripper reader = new PDFTextStripper() {
+        PDFTextStripper reader =
-    	            class LineInfo {
+                new PDFTextStripper() {
-    	                String text;
+                    class LineInfo {
-    	                float fontSize;
+                        String text;
+                        float fontSize;
 
-    	                LineInfo(String text, float fontSize) {
+                        LineInfo(String text, float fontSize) {
-    	                    this.text = text;
+                            this.text = text;
-    	                    this.fontSize = fontSize;
+                            this.fontSize = fontSize;
-    	                }
+                        }
-    	            }
+                    }
 
-    	            List<LineInfo> lineInfos = new ArrayList<>();
+                    List<LineInfo> lineInfos = new ArrayList<>();
-    	            StringBuilder lineBuilder = new StringBuilder();
+                    StringBuilder lineBuilder = new StringBuilder();
-    	            float lastY = -1;
+                    float lastY = -1;
-    	            float maxFontSizeInLine = 0.0f;
+                    float maxFontSizeInLine = 0.0f;
-    	            int lineCount = 0;
+                    int lineCount = 0;
 
-    	            @Override
+                    @Override
-    	            protected void processTextPosition(TextPosition text) {
+                    protected void processTextPosition(TextPosition text) {
-    	                if (lastY != text.getY() && lineCount < LINE_LIMIT) {
+                        if (lastY != text.getY() && lineCount < LINE_LIMIT) {
-    	                    processLine();
+                            processLine();
-    	                    lineBuilder = new StringBuilder(text.getUnicode());
+                            lineBuilder = new StringBuilder(text.getUnicode());
-    	                    maxFontSizeInLine = text.getFontSizeInPt();
+                            maxFontSizeInLine = text.getFontSizeInPt();
-    	                    lastY = text.getY();
+                            lastY = text.getY();
-    	                    lineCount++;
+                            lineCount++;
-    	                } else if (lineCount < LINE_LIMIT) {
+                        } else if (lineCount < LINE_LIMIT) {
-    	                    lineBuilder.append(text.getUnicode());
+                            lineBuilder.append(text.getUnicode());
-    	                    if (text.getFontSizeInPt() > maxFontSizeInLine) {
+                            if (text.getFontSizeInPt() > maxFontSizeInLine) {
-    	                        maxFontSizeInLine = text.getFontSizeInPt();
+                                maxFontSizeInLine = text.getFontSizeInPt();
-    	                    }
+                            }
-    	                }
+                        }
-    	            }
+                    }
 
-    	            private void processLine() {
+                    private void processLine() {
-    	                if (lineBuilder.length() > 0 && lineCount < LINE_LIMIT) {
+                        if (lineBuilder.length() > 0 && lineCount < LINE_LIMIT) {
-    	                    lineInfos.add(new LineInfo(lineBuilder.toString(), maxFontSizeInLine));
+                            lineInfos.add(new LineInfo(lineBuilder.toString(), maxFontSizeInLine));
-    	                }
+                        }
-    	            }
+                    }
 
-    	            @Override
+                    @Override
-    	            public String getText(PDDocument doc) throws IOException {
+                    public String getText(PDDocument doc) throws IOException {
-    	                this.lineInfos.clear();
+                        this.lineInfos.clear();
-    	                this.lineBuilder = new StringBuilder();
+                        this.lineBuilder = new StringBuilder();
-    	                this.lastY = -1;
+                        this.lastY = -1;
-    	                this.maxFontSizeInLine = 0.0f;
+                        this.maxFontSizeInLine = 0.0f;
-    	                this.lineCount = 0;
+                        this.lineCount = 0;
-    	                super.getText(doc);
+                        super.getText(doc);
-    	                processLine(); // Process the last line
+                        processLine(); // Process the last line
 
-    	                // Merge lines with same font size
+                        // Merge lines with same font size
-    	                List<LineInfo> mergedLineInfos = new ArrayList<>();
+                        List<LineInfo> mergedLineInfos = new ArrayList<>();
-    	                for (int i = 0; i < lineInfos.size(); i++) {
+                        for (int i = 0; i < lineInfos.size(); i++) {
-    	                    String mergedText = lineInfos.get(i).text;
+                            String mergedText = lineInfos.get(i).text;
-    	                    float fontSize = lineInfos.get(i).fontSize;
+                            float fontSize = lineInfos.get(i).fontSize;
-    	                    while (i + 1 < lineInfos.size() && lineInfos.get(i + 1).fontSize == fontSize) {
+                            while (i + 1 < lineInfos.size()
-    	                        mergedText += " " + lineInfos.get(i + 1).text;
+                                    && lineInfos.get(i + 1).fontSize == fontSize) {
-    	                        i++;
+                                mergedText += " " + lineInfos.get(i + 1).text;
-    	                    }
+                                i++;
-    	                    mergedLineInfos.add(new LineInfo(mergedText, fontSize));
+                            }
-    	                }
+                            mergedLineInfos.add(new LineInfo(mergedText, fontSize));
+                        }
 
-    	                // Sort lines by font size in descending order and get the first one
+                        // Sort lines by font size in descending order and get the first one
-    	                mergedLineInfos.sort(Comparator.comparing((LineInfo li) -> li.fontSize).reversed());
+                        mergedLineInfos.sort(
-    	                String title = mergedLineInfos.isEmpty() ? null : mergedLineInfos.get(0).text;
+                                Comparator.comparing((LineInfo li) -> li.fontSize).reversed());
-
+                        String title =
-    	                return title != null ? title : (useFirstTextAsFallback ? (mergedLineInfos.isEmpty() ? null : mergedLineInfos.get(mergedLineInfos.size() - 1).text) : null);
+                                mergedLineInfos.isEmpty() ? null : mergedLineInfos.get(0).text;
-    	            }
-
-    	        };
-
-    	        String header = reader.getText(document);
 
+                        return title != null
+                                ? title
+                                : (useFirstTextAsFallback
+                                        ? (mergedLineInfos.isEmpty()
+                                                ? null
+                                                : mergedLineInfos.get(mergedLineInfos.size() - 1)
+                                                        .text)
+                                        : null);
+                    }
+                };
 
+        String header = reader.getText(document);
 
         // Sanitize the header string by removing characters not allowed in a filename.
         if (header != null && header.length() < 255) {
             header = header.replaceAll("[/\\\\?%*:|\"<>]", "");
             return WebResponseUtils.pdfDocToWebResponse(document, header + ".pdf");
         } else {
-        	logger.info("File has no good title to be found");
+            logger.info("File has no good title to be found");
-        	return WebResponseUtils.pdfDocToWebResponse(document, file.getOriginalFilename());
+            return WebResponseUtils.pdfDocToWebResponse(document, file.getOriginalFilename());
         }
     }
-    
-
-
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/AutoSplitPdfController.java

@@ -1,10 +1,10 @@
 package stirling.software.SPDF.controller.api.misc;
+
 import java.awt.image.BufferedImage;
 import java.awt.image.DataBufferByte;
 import java.awt.image.DataBufferInt;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.rendering.PDFRenderer;
 import org.springframework.http.MediaType;
@@ -32,6 +33,7 @@ import com.google.zxing.common.HybridBinarizer;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.AutoSplitPdfRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -40,16 +42,20 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Misc", description = "Miscellaneous APIs")
 public class AutoSplitPdfController {
 
-    private static final String QR_CONTENT = "https://github.com/Frooodle/Stirling-PDF";
+    private static final String QR_CONTENT = "https://github.com/Stirling-Tools/Stirling-PDF";
+    private static final String QR_CONTENT_OLD = "https://github.com/Frooodle/Stirling-PDF";
 
     @PostMapping(value = "/auto-split-pdf", consumes = "multipart/form-data")
-    @Operation(summary = "Auto split PDF pages into separate documents", description = "This endpoint accepts a PDF file, scans each page for a specific QR code, and splits the document at the QR code boundaries. The output is a zip file containing each separate PDF document. Input:PDF Output:ZIP-PDF Type:SISO")
+    @Operation(
-    public ResponseEntity<byte[]> autoSplitPdf(@ModelAttribute AutoSplitPdfRequest request) throws IOException {
+            summary = "Auto split PDF pages into separate documents",
+            description =
+                    "This endpoint accepts a PDF file, scans each page for a specific QR code, and splits the document at the QR code boundaries. The output is a zip file containing each separate PDF document. Input:PDF Output:ZIP-PDF Type:SISO")
+    public ResponseEntity<byte[]> autoSplitPdf(@ModelAttribute AutoSplitPdfRequest request)
+            throws IOException {
         MultipartFile file = request.getFileInput();
         boolean duplexMode = request.isDuplexMode();
 
-        InputStream inputStream = file.getInputStream();
+        PDDocument document = Loader.loadPDF(file.getBytes());
-        PDDocument document = PDDocument.load(inputStream);
         PDFRenderer pdfRenderer = new PDFRenderer(document);
 
         List<PDDocument> splitDocuments = new ArrayList<>();
@@ -58,12 +64,11 @@ public class AutoSplitPdfController {
         for (int page = 0; page < document.getNumberOfPages(); ++page) {
             BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 150);
             String result = decodeQRCode(bim);
-
+            if ((QR_CONTENT.equals(result) || QR_CONTENT_OLD.equals(result)) && page != 0) {
-            if (QR_CONTENT.equals(result) && page != 0) {
                 splitDocuments.add(new PDDocument());
             }
 
-            if (!splitDocuments.isEmpty() && !QR_CONTENT.equals(result)) {
+            if (!splitDocuments.isEmpty() && !QR_CONTENT.equals(result) && !QR_CONTENT_OLD.equals(result)) {
                 splitDocuments.get(splitDocuments.size() - 1).addPage(document.getPage(page));
             } else if (page == 0) {
                 PDDocument firstDocument = new PDDocument();
@@ -72,7 +77,7 @@ public class AutoSplitPdfController {
             }
 
             // If duplexMode is true and current page is a divider, then skip next page
-            if (duplexMode && QR_CONTENT.equals(result)) {
+            if (duplexMode && (QR_CONTENT.equals(result) || QR_CONTENT_OLD.equals(result))) {
                 page++;
             }
         }
@@ -107,29 +112,48 @@ public class AutoSplitPdfController {
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
-        	data = Files.readAllBytes(zipFile);
+            data = Files.readAllBytes(zipFile);
             Files.delete(zipFile);
         }
 
-        return WebResponseUtils.bytesToWebResponse(data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
+        return WebResponseUtils.bytesToWebResponse(
+                data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
     }
 
-
     private static String decodeQRCode(BufferedImage bufferedImage) {
         LuminanceSource source;
 
         if (bufferedImage.getRaster().getDataBuffer() instanceof DataBufferByte) {
             byte[] pixels = ((DataBufferByte) bufferedImage.getRaster().getDataBuffer()).getData();
-            source = new PlanarYUVLuminanceSource(pixels, bufferedImage.getWidth(), bufferedImage.getHeight(), 0, 0, bufferedImage.getWidth(), bufferedImage.getHeight(), false);
+            source =
+                    new PlanarYUVLuminanceSource(
+                            pixels,
+                            bufferedImage.getWidth(),
+                            bufferedImage.getHeight(),
+                            0,
+                            0,
+                            bufferedImage.getWidth(),
+                            bufferedImage.getHeight(),
+                            false);
         } else if (bufferedImage.getRaster().getDataBuffer() instanceof DataBufferInt) {
             int[] pixels = ((DataBufferInt) bufferedImage.getRaster().getDataBuffer()).getData();
             byte[] newPixels = new byte[pixels.length];
             for (int i = 0; i < pixels.length; i++) {
                 newPixels[i] = (byte) (pixels[i] & 0xff);
             }
-            source = new PlanarYUVLuminanceSource(newPixels, bufferedImage.getWidth(), bufferedImage.getHeight(), 0, 0, bufferedImage.getWidth(), bufferedImage.getHeight(), false);
+            source =
+                    new PlanarYUVLuminanceSource(
+                            newPixels,
+                            bufferedImage.getWidth(),
+                            bufferedImage.getHeight(),
+                            0,
+                            0,
+                            bufferedImage.getWidth(),
+                            bufferedImage.getHeight(),
+                            false);
         } else {
-            throw new IllegalArgumentException("BufferedImage must have 8-bit gray scale, 24-bit RGB, 32-bit ARGB (packed int), byte gray, or 3-byte/4-byte RGB image data");
+            throw new IllegalArgumentException(
+                    "BufferedImage must have 8-bit gray scale, 24-bit RGB, 32-bit ARGB (packed int), byte gray, or 3-byte/4-byte RGB image data");
         }
 
         BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

src/main/java/stirling/software/SPDF/controller/api/misc/BlankPageController.java

@@ -13,6 +13,7 @@ import java.util.stream.IntStream;
 
 import javax.imageio.ImageIO;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageTree;
@@ -28,10 +29,10 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.RemoveBlankPagesRequest;
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.ProcessExecutor;
-import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -39,19 +40,20 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Misc", description = "Miscellaneous APIs")
 public class BlankPageController {
 
-	@PostMapping(consumes = "multipart/form-data", value = "/remove-blanks")
+    @PostMapping(consumes = "multipart/form-data", value = "/remove-blanks")
-	@Operation(
+    @Operation(
-	    summary = "Remove blank pages from a PDF file",
+            summary = "Remove blank pages from a PDF file",
-	    description = "This endpoint removes blank pages from a given PDF file. Users can specify the threshold and white percentage to tune the detection of blank pages. Input:PDF Output:PDF Type:SISO"
+            description =
-	)
+                    "This endpoint removes blank pages from a given PDF file. Users can specify the threshold and white percentage to tune the detection of blank pages. Input:PDF Output:PDF Type:SISO")
-	public ResponseEntity<byte[]> removeBlankPages(@ModelAttribute RemoveBlankPagesRequest request) throws IOException, InterruptedException {
+    public ResponseEntity<byte[]> removeBlankPages(@ModelAttribute RemoveBlankPagesRequest request)
-	    MultipartFile inputFile = request.getFileInput();
+            throws IOException, InterruptedException {
-	    int threshold = request.getThreshold();
+        MultipartFile inputFile = request.getFileInput();
-	    float whitePercent = request.getWhitePercent();
+        int threshold = request.getThreshold();
+        float whitePercent = request.getWhitePercent();
 
-    	PDDocument document = null;
+        PDDocument document = null;
         try {
-            document = PDDocument.load(inputFile.getInputStream());
+            document = Loader.loadPDF(inputFile.getBytes());
             PDPageTree pages = document.getDocumentCatalog().getPages();
             PDFTextStripper textStripper = new PDFTextStripper();
 
@@ -79,27 +81,47 @@ public class BlankPageController {
                         BufferedImage image = pdfRenderer.renderImageWithDPI(pageIndex, 300);
                         ImageIO.write(image, "png", tempFile.toFile());
 
-                        List<String> command = new ArrayList<>(Arrays.asList("python3", System.getProperty("user.dir") + "/scripts/detect-blank-pages.py", tempFile.toString() ,"--threshold", String.valueOf(threshold), "--white_percent", String.valueOf(whitePercent)));
+                        List<String> command =
+                                new ArrayList<>(
+                                        Arrays.asList(
+                                                "python",
+                                                System.getProperty("user.dir")
+                                                        + "/scripts/detect-blank-pages.py",
+                                                tempFile.toString(),
+                                                "--threshold",
+                                                String.valueOf(threshold),
+                                                "--white_percent",
+                                                String.valueOf(whitePercent)));
 
+                        Boolean blank = false;
                         // Run CLI command
-                        ProcessExecutorResult returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.PYTHON_OPENCV).runCommandWithOutputHandling(command);
+                        try {
+                            ProcessExecutor.getInstance(ProcessExecutor.Processes.PYTHON_OPENCV)
+                                    .runCommandWithOutputHandling(command);
+                        } catch (IOException e) {
+                            // From detect-blank-pages.py
+                            // Return code 1: The image is considered blank.
+                            // Return code 0: The image is not considered blank.
+                            // Since the process returned with a failure code, it should be blank.
+                            blank = true;
+                        }
 
-                        // does contain data
+                        if (blank) {
-                        if (returnCode.getRc() == 0) {
-                            System.out.println("page " + pageIndex + " has image which is not blank");
-                            pagesToKeepIndex.add(pageIndex);
-                        } else {
                             System.out.println("Skipping, Image was blank for page #" + pageIndex);
+                        } else {
+                            System.out.println(
+                                    "page " + pageIndex + " has image which is not blank");
+                            pagesToKeepIndex.add(pageIndex);
                         }
                     }
                 }
                 pageIndex++;
-                
             }
             System.out.print("pagesToKeep=" + pagesToKeepIndex.size());
 
             // Remove pages not present in pagesToKeepIndex
-            List<Integer> pageIndices = IntStream.range(0, pages.getCount()).boxed().collect(Collectors.toList());
+            List<Integer> pageIndices =
+                    IntStream.range(0, pages.getCount()).boxed().collect(Collectors.toList());
             Collections.reverse(pageIndices); // Reverse to prevent index shifting during removal
             for (Integer i : pageIndices) {
                 if (!pagesToKeepIndex.contains(i)) {
@@ -107,16 +129,15 @@ public class BlankPageController {
                 }
             }
 
-            return WebResponseUtils.pdfDocToWebResponse(document, inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_blanksRemoved.pdf");
+            return WebResponseUtils.pdfDocToWebResponse(
+                    document,
+                    inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                            + "_blanksRemoved.pdf");
         } catch (IOException e) {
             e.printStackTrace();
             return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
         } finally {
-            if (document != null)
+            if (document != null) document.close();
-                document.close();
         }
     }
-
-
-    
 }

src/main/java/stirling/software/SPDF/controller/api/misc/CompressController.java

@@ -13,6 +13,7 @@ import java.util.List;
 import javax.imageio.ImageIO;
 
 import org.apache.commons.io.FileUtils;
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.cos.COSName;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -30,6 +31,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.OptimizePdfRequest;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.ProcessExecutor;
@@ -44,20 +46,23 @@ public class CompressController {
     private static final Logger logger = LoggerFactory.getLogger(CompressController.class);
 
     @PostMapping(consumes = "multipart/form-data", value = "/compress-pdf")
-    @Operation(summary = "Optimize PDF file", description = "This endpoint accepts a PDF file and optimizes it based on the provided parameters. Input:PDF Output:PDF Type:SISO")
+    @Operation(
-    public ResponseEntity<byte[]> optimizePdf(@ModelAttribute OptimizePdfRequest request) throws Exception {
+            summary = "Optimize PDF file",
+            description =
+                    "This endpoint accepts a PDF file and optimizes it based on the provided parameters. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> optimizePdf(@ModelAttribute OptimizePdfRequest request)
+            throws Exception {
         MultipartFile inputFile = request.getFileInput();
         Integer optimizeLevel = request.getOptimizeLevel();
         String expectedOutputSizeString = request.getExpectedOutputSize();
 
-
+        if (expectedOutputSizeString == null && optimizeLevel == null) {
-        if(expectedOutputSizeString == null && optimizeLevel == null) {
             throw new Exception("Both expected output size and optimize level are not specified");
         }
 
         Long expectedOutputSize = 0L;
         boolean autoMode = false;
-        if (expectedOutputSizeString != null && expectedOutputSizeString.length() > 1 ) {
+        if (expectedOutputSizeString != null && expectedOutputSizeString.length() > 1) {
             expectedOutputSize = GeneralUtils.convertSizeToBytes(expectedOutputSizeString);
             autoMode = true;
         }
@@ -71,8 +76,9 @@ public class CompressController {
         // Prepare the output file path
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
 
-        // Determine initial optimization level based on expected size reduction, only if in autoMode
+        // Determine initial optimization level based on expected size reduction, only if in
-        if(autoMode) {
+        // autoMode
+        if (autoMode) {
             double sizeReductionRatio = expectedOutputSize / (double) inputFileSize;
             if (sizeReductionRatio > 0.7) {
                 optimizeLevel = 1;
@@ -94,20 +100,20 @@ public class CompressController {
             command.add("-dCompatibilityLevel=1.4");
 
             switch (optimizeLevel) {
-            case 1:
+                case 1:
-                command.add("-dPDFSETTINGS=/prepress");
+                    command.add("-dPDFSETTINGS=/prepress");
-                break;
+                    break;
-            case 2:
+                case 2:
-                command.add("-dPDFSETTINGS=/printer");
+                    command.add("-dPDFSETTINGS=/printer");
-                break;    
+                    break;
-            case 3:
+                case 3:
-                command.add("-dPDFSETTINGS=/ebook");
+                    command.add("-dPDFSETTINGS=/ebook");
-                break;
+                    break;
-            case 4:
+                case 4:
-                command.add("-dPDFSETTINGS=/screen");
+                    command.add("-dPDFSETTINGS=/screen");
-                break;
+                    break;
-            default:
+                default:
-                command.add("-dPDFSETTINGS=/default");
+                    command.add("-dPDFSETTINGS=/default");
             }
 
             command.add("-dNOPAUSE");
@@ -116,7 +122,9 @@ public class CompressController {
             command.add("-sOutputFile=" + tempOutputFile.toString());
             command.add(tempInputFile.toString());
 
-            ProcessExecutorResult returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT).runCommandWithOutputHandling(command);
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
+                            .runCommandWithOutputHandling(command);
 
             // Check if file size is within expected size or not auto mode so instantly finish
             long outputFileSize = Files.size(tempOutputFile);
@@ -125,23 +133,22 @@ public class CompressController {
             } else {
                 // Increase optimization level for next iteration
                 optimizeLevel++;
-                if(autoMode && optimizeLevel > 3) {
+                if (autoMode && optimizeLevel > 3) {
                     System.out.println("Skipping level 4 due to bad results in auto mode");
                     sizeMet = true;
-                } else if(optimizeLevel == 5) {
+                } else if (optimizeLevel == 5) {
 
                 } else {
-                    System.out.println("Increasing ghostscript optimisation level to " + optimizeLevel);
+                    System.out.println(
+                            "Increasing ghostscript optimisation level to " + optimizeLevel);
                 }
             }
         }
 
-        
-
         if (expectedOutputSize != null && autoMode) {
             long outputFileSize = Files.size(tempOutputFile);
             if (outputFileSize > expectedOutputSize) {
-                try (PDDocument doc = PDDocument.load(new File(tempOutputFile.toString()))) {
+                try (PDDocument doc = Loader.loadPDF(new File(tempOutputFile.toString()))) {
                     long previousFileSize = 0;
                     double scaleFactor = 1.0;
                     while (true) {
@@ -157,8 +164,8 @@ public class CompressController {
                                     BufferedImage bufferedImage = image.getImage();
 
                                     // Calculate the new dimensions
-                                    int newWidth = (int)(bufferedImage.getWidth() * scaleFactor);
+                                    int newWidth = (int) (bufferedImage.getWidth() * scaleFactor);
-                                    int newHeight = (int)(bufferedImage.getHeight() * scaleFactor);
+                                    int newHeight = (int) (bufferedImage.getHeight() * scaleFactor);
 
                                     // If the new dimensions are zero, skip this iteration
                                     if (newWidth == 0 || newHeight == 0) {
@@ -166,23 +173,39 @@ public class CompressController {
                                     }
 
                                     // Otherwise, proceed with the scaling
-                                    Image scaledImage = bufferedImage.getScaledInstance(newWidth, newHeight, Image.SCALE_SMOOTH);
+                                    Image scaledImage =
+                                            bufferedImage.getScaledInstance(
+                                                    newWidth, newHeight, Image.SCALE_SMOOTH);
 
                                     // Convert the scaled image back to a BufferedImage
-                                    BufferedImage scaledBufferedImage = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
+                                    BufferedImage scaledBufferedImage =
-                                    scaledBufferedImage.getGraphics().drawImage(scaledImage, 0, 0, null);
+                                            new BufferedImage(
+                                                    newWidth,
+                                                    newHeight,
+                                                    BufferedImage.TYPE_INT_RGB);
+                                    scaledBufferedImage
+                                            .getGraphics()
+                                            .drawImage(scaledImage, 0, 0, null);
 
                                     // Compress the scaled image
-                                    ByteArrayOutputStream compressedImageStream = new ByteArrayOutputStream();
+                                    ByteArrayOutputStream compressedImageStream =
-                                    ImageIO.write(scaledBufferedImage, "jpeg", compressedImageStream);
+                                            new ByteArrayOutputStream();
+                                    ImageIO.write(
+                                            scaledBufferedImage, "jpeg", compressedImageStream);
                                     byte[] imageBytes = compressedImageStream.toByteArray();
                                     compressedImageStream.close();
 
                                     // Convert compressed image back to PDImageXObject
-                                    ByteArrayInputStream bais = new ByteArrayInputStream(imageBytes);
+                                    ByteArrayInputStream bais =
-                                    PDImageXObject compressedImage = PDImageXObject.createFromByteArray(doc, imageBytes, image.getCOSObject().toString());
+                                            new ByteArrayInputStream(imageBytes);
+                                    PDImageXObject compressedImage =
+                                            PDImageXObject.createFromByteArray(
+                                                    doc,
+                                                    imageBytes,
+                                                    image.getCOSObject().toString());
 
-                                    // Replace the image in the resources with the compressed version
+                                    // Replace the image in the resources with the compressed
+                                    // version
                                     res.put(name, compressedImage);
                                 }
                             }
@@ -194,16 +217,23 @@ public class CompressController {
                         long currentSize = Files.size(tempOutputFile);
                         // Check if the overall PDF size is still larger than expectedOutputSize
                         if (currentSize > expectedOutputSize) {
-                         // Log the current file size and scaleFactor
+                            // Log the current file size and scaleFactor
 
-                            System.out.println("Current file size: " + FileUtils.byteCountToDisplaySize(currentSize));
+                            System.out.println(
+                                    "Current file size: "
+                                            + FileUtils.byteCountToDisplaySize(currentSize));
                             System.out.println("Current scale factor: " + scaleFactor);
 
                             // The file is still too large, reduce scaleFactor and try again
                             scaleFactor *= 0.9; // reduce scaleFactor by 10%
                             // Avoid scaleFactor being too small, causing the image to shrink to 0
-                            if(scaleFactor < 0.2 || previousFileSize == currentSize){
+                            if (scaleFactor < 0.2 || previousFileSize == currentSize) {
-                                throw new RuntimeException("Could not reach the desired size without excessively degrading image quality, lowest size recommended is " + FileUtils.byteCountToDisplaySize(currentSize) + ", " + currentSize + " bytes");
+                                throw new RuntimeException(
+                                        "Could not reach the desired size without excessively degrading image quality, lowest size recommended is "
+                                                + FileUtils.byteCountToDisplaySize(currentSize)
+                                                + ", "
+                                                + currentSize
+                                                + " bytes");
                             }
                             previousFileSize = currentSize;
                         } else {
@@ -211,10 +241,7 @@ public class CompressController {
                             break;
                         }
                     }
-
                 }
-
-                    
             }
         }
 
@@ -222,9 +249,10 @@ public class CompressController {
         byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
 
         // Check if optimized file is larger than the original
-        if(pdfBytes.length > inputFileSize) {
+        if (pdfBytes.length > inputFileSize) {
             // Log the occurrence
-            logger.warn("Optimized file is larger than the original. Returning the original file instead.");
+            logger.warn(
+                    "Optimized file is larger than the original. Returning the original file instead.");
 
             // Read the original file again
             pdfBytes = Files.readAllBytes(tempInputFile);
@@ -235,8 +263,8 @@ public class CompressController {
         Files.delete(tempOutputFile);
 
         // Return the optimized PDF as a response
-        String outputFilename = inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_Optimized.pdf";
+        String outputFilename =
+                inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_Optimized.pdf";
         return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/ExtractImageScansController.java

@@ -1,7 +1,6 @@
 package stirling.software.SPDF.controller.api.misc;
 
 import java.awt.image.BufferedImage;
-import java.io.ByteArrayInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -17,6 +16,7 @@ import java.util.zip.ZipOutputStream;
 import javax.imageio.ImageIO;
 
 import org.apache.commons.io.FileUtils;
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.rendering.PDFRenderer;
 import org.slf4j.Logger;
@@ -32,10 +32,12 @@ import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.parameters.RequestBody;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.ExtractImageScansRequest;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/misc")
 @Tag(name = "Misc", description = "Miscellaneous APIs")
@@ -44,18 +46,28 @@ public class ExtractImageScansController {
     private static final Logger logger = LoggerFactory.getLogger(ExtractImageScansController.class);
 
     @PostMapping(consumes = "multipart/form-data", value = "/extract-image-scans")
-    @Operation(summary = "Extract image scans from an input file",
+    @Operation(
-            description = "This endpoint extracts image scans from a given file based on certain parameters. Users can specify angle threshold, tolerance, minimum area, minimum contour area, and border size. Input:PDF Output:IMAGE/ZIP Type:SIMO")
+            summary = "Extract image scans from an input file",
+            description =
+                    "This endpoint extracts image scans from a given file based on certain parameters. Users can specify angle threshold, tolerance, minimum area, minimum contour area, and border size. Input:PDF Output:IMAGE/ZIP Type:SIMO")
     public ResponseEntity<byte[]> extractImageScans(
-    		@RequestBody(
+            @RequestBody(
-    	            description = "Form data containing file and extraction parameters",
+                            description = "Form data containing file and extraction parameters",
-    	            required = true,
+                            required = true,
-    	            content = @Content(
+                            content =
-    	                mediaType = "multipart/form-data",
+                                    @Content(
-    	                schema = @Schema(implementation = ExtractImageScansRequest.class) // This should represent your form's structure
+                                            mediaType = "multipart/form-data",
-    	            )
+                                            schema =
-    	        )
+                                                    @Schema(
-    	        ExtractImageScansRequest form) throws IOException, InterruptedException {
+                                                            implementation =
+                                                                    ExtractImageScansRequest
+                                                                            .class) // This should
+                                            // represent
+                                            // your form's
+                                            // structure
+                                            ))
+                    ExtractImageScansRequest form)
+            throws IOException, InterruptedException {
         String fileName = form.getFileInput().getOriginalFilename();
         String extension = fileName.substring(fileName.lastIndexOf(".") + 1);
 
@@ -64,7 +76,7 @@ public class ExtractImageScansController {
         // Check if input file is a PDF
         if (extension.equalsIgnoreCase("pdf")) {
             // Load PDF document
-            try (PDDocument document = PDDocument.load(new ByteArrayInputStream(form.getFileInput().getBytes()))) {
+            try (PDDocument document = Loader.loadPDF(form.getFileInput().getBytes())) {
                 PDFRenderer pdfRenderer = new PDFRenderer(document);
                 int pageCount = document.getNumberOfPages();
                 images = new ArrayList<>();
@@ -84,7 +96,10 @@ public class ExtractImageScansController {
             }
         } else {
             Path tempInputFile = Files.createTempFile("input_", "." + extension);
-            Files.copy(form.getFileInput().getInputStream(), tempInputFile, StandardCopyOption.REPLACE_EXISTING);
+            Files.copy(
+                    form.getFileInput().getInputStream(),
+                    tempInputFile,
+                    StandardCopyOption.REPLACE_EXISTING);
             // Add input file path to images list
             images.add(tempInputFile.toString());
         }
@@ -95,21 +110,28 @@ public class ExtractImageScansController {
         for (int i = 0; i < images.size(); i++) {
 
             Path tempDir = Files.createTempDirectory("openCV_output");
-            List<String> command = new ArrayList<>(Arrays.asList(
+            List<String> command =
-                    "python3", 
+                    new ArrayList<>(
-                    "./scripts/split_photos.py", 
+                            Arrays.asList(
-                    images.get(i), 
+                                    "python3",
-                    tempDir.toString(), 
+                                    "./scripts/split_photos.py",
-                    "--angle_threshold", String.valueOf(form.getAngleThreshold()),
+                                    images.get(i),
-                    "--tolerance", String.valueOf(form.getTolerance()),
+                                    tempDir.toString(),
-                    "--min_area", String.valueOf(form.getMinArea()),
+                                    "--angle_threshold",
-                    "--min_contour_area", String.valueOf(form.getMinContourArea()),
+                                    String.valueOf(form.getAngleThreshold()),
-                    "--border_size", String.valueOf(form.getBorderSize())
+                                    "--tolerance",
-                ));
+                                    String.valueOf(form.getTolerance()),
-
+                                    "--min_area",
+                                    String.valueOf(form.getMinArea()),
+                                    "--min_contour_area",
+                                    String.valueOf(form.getMinContourArea()),
+                                    "--border_size",
+                                    String.valueOf(form.getBorderSize())));
 
             // Run CLI command
-            ProcessExecutorResult returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.PYTHON_OPENCV).runCommandWithOutputHandling(command);
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.PYTHON_OPENCV)
+                            .runCommandWithOutputHandling(command);
 
             // Read the output photos in temp directory
             List<Path> tempOutputFiles = Files.list(tempDir).sorted().collect(Collectors.toList());
@@ -126,10 +148,16 @@ public class ExtractImageScansController {
             String outputZipFilename = fileName.replaceFirst("[.][^.]+$", "") + "_processed.zip";
             Path tempZipFile = Files.createTempFile("output_", ".zip");
 
-            try (ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(tempZipFile.toFile()))) {
+            try (ZipOutputStream zipOut =
+                    new ZipOutputStream(new FileOutputStream(tempZipFile.toFile()))) {
                 // Add processed images to the zip
                 for (int i = 0; i < processedImageBytes.size(); i++) {
-                    ZipEntry entry = new ZipEntry(fileName.replaceFirst("[.][^.]+$", "") + "_" + (i + 1) + ".png");
+                    ZipEntry entry =
+                            new ZipEntry(
+                                    fileName.replaceFirst("[.][^.]+$", "")
+                                            + "_"
+                                            + (i + 1)
+                                            + ".png");
                     zipOut.putNextEntry(entry);
                     zipOut.write(processedImageBytes.get(i));
                     zipOut.closeEntry();
@@ -141,13 +169,15 @@ public class ExtractImageScansController {
             // Clean up the temporary zip file
             Files.delete(tempZipFile);
 
-            return WebResponseUtils.bytesToWebResponse(zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
+            return WebResponseUtils.bytesToWebResponse(
+                    zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
         } else {
             // Return the processed image as a response
             byte[] imageBytes = processedImageBytes.get(0);
-            return WebResponseUtils.bytesToWebResponse(imageBytes, fileName.replaceFirst("[.][^.]+$", "") + ".png", MediaType.IMAGE_PNG);
+            return WebResponseUtils.bytesToWebResponse(
+                    imageBytes,
+                    fileName.replaceFirst("[.][^.]+$", "") + ".png",
+                    MediaType.IMAGE_PNG);
         }
-
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/ExtractImagesController.java

@@ -1,4 +1,5 @@
 package stirling.software.SPDF.controller.api.misc;
+
 import java.awt.Graphics2D;
 import java.awt.Image;
 import java.awt.image.BufferedImage;
@@ -13,6 +14,7 @@ import java.util.zip.ZipOutputStream;
 
 import javax.imageio.ImageIO;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.cos.COSName;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -29,8 +31,10 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFWithImageFormatRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/misc")
 @Tag(name = "Misc", description = "Miscellaneous APIs")
@@ -39,14 +43,18 @@ public class ExtractImagesController {
     private static final Logger logger = LoggerFactory.getLogger(ExtractImagesController.class);
 
     @PostMapping(consumes = "multipart/form-data", value = "/extract-images")
-    @Operation(summary = "Extract images from a PDF file",
+    @Operation(
-            description = "This endpoint extracts images from a given PDF file and returns them in a zip file. Users can specify the output image format. Input:PDF Output:IMAGE/ZIP Type:SIMO")
+            summary = "Extract images from a PDF file",
-    public ResponseEntity<byte[]> extractImages(@ModelAttribute PDFWithImageFormatRequest request) throws IOException {
+            description =
+                    "This endpoint extracts images from a given PDF file and returns them in a zip file. Users can specify the output image format. Input:PDF Output:IMAGE/ZIP Type:SIMO")
+    public ResponseEntity<byte[]> extractImages(@ModelAttribute PDFWithImageFormatRequest request)
+            throws IOException {
         MultipartFile file = request.getFileInput();
         String format = request.getFormat();
 
-        System.out.println(System.currentTimeMillis() + "file=" + file.getName() + ", format=" + format);
+        System.out.println(
-        PDDocument document = PDDocument.load(file.getBytes());
+                System.currentTimeMillis() + "file=" + file.getName() + ", format=" + format);
+        PDDocument document = Loader.loadPDF(file.getBytes());
 
         // Create ByteArrayOutputStream to write zip file to byte array
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
@@ -69,7 +77,7 @@ public class ExtractImagesController {
                 if (page.getResources().isImageXObject(name)) {
                     PDImageXObject image = (PDImageXObject) page.getResources().getXObject(name);
                     int imageHash = image.hashCode();
-                    if(processedImages.contains(imageHash)) {
+                    if (processedImages.contains(imageHash)) {
                         continue; // Skip already processed images
                     }
                     processedImages.add(imageHash);
@@ -78,15 +86,28 @@ public class ExtractImagesController {
                     RenderedImage renderedImage = image.getImage();
                     BufferedImage bufferedImage = null;
                     if (format.equalsIgnoreCase("png")) {
-                        bufferedImage = new BufferedImage(renderedImage.getWidth(), renderedImage.getHeight(), BufferedImage.TYPE_INT_ARGB);
+                        bufferedImage =
+                                new BufferedImage(
+                                        renderedImage.getWidth(),
+                                        renderedImage.getHeight(),
+                                        BufferedImage.TYPE_INT_ARGB);
                     } else if (format.equalsIgnoreCase("jpeg") || format.equalsIgnoreCase("jpg")) {
-                        bufferedImage = new BufferedImage(renderedImage.getWidth(), renderedImage.getHeight(), BufferedImage.TYPE_INT_RGB);
+                        bufferedImage =
+                                new BufferedImage(
+                                        renderedImage.getWidth(),
+                                        renderedImage.getHeight(),
+                                        BufferedImage.TYPE_INT_RGB);
                     } else if (format.equalsIgnoreCase("gif")) {
-                        bufferedImage = new BufferedImage(renderedImage.getWidth(), renderedImage.getHeight(), BufferedImage.TYPE_BYTE_INDEXED);
+                        bufferedImage =
+                                new BufferedImage(
+                                        renderedImage.getWidth(),
+                                        renderedImage.getHeight(),
+                                        BufferedImage.TYPE_BYTE_INDEXED);
                     }
 
                     // Write image to zip file
-                    String imageName = filename + "_" + imageIndex + " (Page " + pageNum + ")." + format;
+                    String imageName =
+                            filename + "_" + imageIndex + " (Page " + pageNum + ")." + format;
                     ZipEntry zipEntry = new ZipEntry(imageName);
                     zos.putNextEntry(zipEntry);
 
@@ -111,7 +132,7 @@ public class ExtractImagesController {
         // Create ByteArrayResource from byte array
         byte[] zipContents = baos.toByteArray();
 
-        return WebResponseUtils.boasToWebResponse(baos, filename + "_extracted-images.zip", MediaType.APPLICATION_OCTET_STREAM);
+        return WebResponseUtils.boasToWebResponse(
+                baos, filename + "_extracted-images.zip", MediaType.APPLICATION_OCTET_STREAM);
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/FakeScanControllerWIP.java

@@ -3,23 +3,20 @@ package stirling.software.SPDF.controller.api.misc;
 import java.awt.Color;
 import java.awt.geom.AffineTransform;
 import java.awt.image.AffineTransformOp;
-//Required for image manipulation
 import java.awt.image.BufferedImage;
 import java.awt.image.BufferedImageOp;
 import java.awt.image.ConvolveOp;
 import java.awt.image.Kernel;
 import java.awt.image.RescaleOp;
 import java.io.ByteArrayOutputStream;
-//Required for file input/output
 import java.io.File;
 import java.io.IOException;
 import java.security.SecureRandom;
-//Other required classes
 import java.util.Random;
 
-//Required for image input/output
 import javax.imageio.ImageIO;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
@@ -32,7 +29,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
-import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
@@ -40,6 +36,7 @@ import org.springframework.web.multipart.MultipartFile;
 import io.swagger.v3.oas.annotations.Hidden;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFFile;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -50,102 +47,101 @@ public class FakeScanControllerWIP {
 
     private static final Logger logger = LoggerFactory.getLogger(FakeScanControllerWIP.class);
 
-    //TODO
+    // TODO
     @Hidden
-    @PostMapping(consumes = "multipart/form-data", value = "/fakeScan")
+    // @PostMapping(consumes = "multipart/form-data", value = "/fakeScan")
     @Operation(
-        summary = "Repair a PDF file",
+            summary = "Repair a PDF file",
-        description = "This endpoint repairs a given PDF file by running Ghostscript command. The PDF is first saved to a temporary location, repaired, read back, and then returned as a response."
+            description =
-    )
+                    "This endpoint repairs a given PDF file by running Ghostscript command. The PDF is first saved to a temporary location, repaired, read back, and then returned as a response.")
     public ResponseEntity<byte[]> repairPdf(@ModelAttribute PDFFile request) throws IOException {
         MultipartFile inputFile = request.getFileInput();
 
-    	PDDocument document = PDDocument.load(inputFile.getBytes());
+        PDDocument document = Loader.loadPDF(inputFile.getBytes());
-    	PDFRenderer pdfRenderer = new PDFRenderer(document);
+        PDFRenderer pdfRenderer = new PDFRenderer(document);
-    	for (int page = 0; page < document.getNumberOfPages(); ++page)
+        for (int page = 0; page < document.getNumberOfPages(); ++page) {
-    	{
+            BufferedImage image = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);
-    	    BufferedImage image = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);
+            ImageIO.write(image, "png", new File("scanned-" + (page + 1) + ".png"));
-    	    ImageIO.write(image, "png", new File("scanned-" + (page+1) + ".png"));
+        }
-    	}
+        document.close();
-    	document.close();
 
-    	// Constants
+        // Constants
-    	int scannedness = 90;  // Value between 0 and 100
+        int scannedness = 90; // Value between 0 and 100
-    	int dirtiness = 0;  // Value between 0 and 100
+        int dirtiness = 0; // Value between 0 and 100
 
-    	// Load the source image
+        // Load the source image
-    	BufferedImage sourceImage = ImageIO.read(new File("scanned-1.png"));
+        BufferedImage sourceImage = ImageIO.read(new File("scanned-1.png"));
 
-    	// Create the destination image
+        // Create the destination image
-    	BufferedImage destinationImage = new BufferedImage(sourceImage.getWidth(), sourceImage.getHeight(), sourceImage.getType());
+        BufferedImage destinationImage =
+                new BufferedImage(
+                        sourceImage.getWidth(), sourceImage.getHeight(), sourceImage.getType());
 
-    	// Apply a brightness and contrast effect based on the "scanned-ness"
+        // Apply a brightness and contrast effect based on the "scanned-ness"
-    	float scaleFactor = 1.0f + (scannedness / 100.0f) * 0.5f;  // Between 1.0 and 1.5
+        float scaleFactor = 1.0f + (scannedness / 100.0f) * 0.5f; // Between 1.0 and 1.5
-    	float offset = scannedness * 1.5f;  // Between 0 and 150
+        float offset = scannedness * 1.5f; // Between 0 and 150
-    	BufferedImageOp op = new RescaleOp(scaleFactor, offset, null);
+        BufferedImageOp op = new RescaleOp(scaleFactor, offset, null);
-    	op.filter(sourceImage, destinationImage);
+        op.filter(sourceImage, destinationImage);
 
-    	// Apply a rotation effect
+        // Apply a rotation effect
-    	double rotationRequired = Math.toRadians((new SecureRandom().nextInt(3 - 1) + 1));  // Random angle between 1 and 3 degrees
+        double rotationRequired =
-    	double locationX = destinationImage.getWidth() / 2;
+                Math.toRadians(
-    	double locationY = destinationImage.getHeight() / 2;
+                        (new SecureRandom().nextInt(3 - 1)
-    	AffineTransform tx = AffineTransform.getRotateInstance(rotationRequired, locationX, locationY);
+                                + 1)); // Random angle between 1 and 3 degrees
-    	AffineTransformOp rotateOp = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
+        double locationX = destinationImage.getWidth() / 2;
-    	destinationImage = rotateOp.filter(destinationImage, null);
+        double locationY = destinationImage.getHeight() / 2;
+        AffineTransform tx =
+                AffineTransform.getRotateInstance(rotationRequired, locationX, locationY);
+        AffineTransformOp rotateOp = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
+        destinationImage = rotateOp.filter(destinationImage, null);
 
-    	// Apply a blur effect based on the "scanned-ness"
+        // Apply a blur effect based on the "scanned-ness"
-    	float blurIntensity = scannedness / 100.0f * 0.2f;  // Between 0.0 and 0.2
+        float blurIntensity = scannedness / 100.0f * 0.2f; // Between 0.0 and 0.2
-    	float[] matrix = {
+        float[] matrix = {
-    	    blurIntensity, blurIntensity, blurIntensity,
+            blurIntensity, blurIntensity, blurIntensity,
-    	    blurIntensity, blurIntensity, blurIntensity,
+            blurIntensity, blurIntensity, blurIntensity,
-    	    blurIntensity, blurIntensity, blurIntensity
+            blurIntensity, blurIntensity, blurIntensity
-    	};
+        };
-    	BufferedImageOp blurOp = new ConvolveOp(new Kernel(3, 3, matrix), ConvolveOp.EDGE_NO_OP, null);
+        BufferedImageOp blurOp =
-    	destinationImage = blurOp.filter(destinationImage, null);
+                new ConvolveOp(new Kernel(3, 3, matrix), ConvolveOp.EDGE_NO_OP, null);
+        destinationImage = blurOp.filter(destinationImage, null);
 
-    	// Add noise to the image based on the "dirtiness"
+        // Add noise to the image based on the "dirtiness"
-    	Random random = new SecureRandom();
+        Random random = new SecureRandom();
-    	for (int y = 0; y < destinationImage.getHeight(); y++) {
+        for (int y = 0; y < destinationImage.getHeight(); y++) {
-    	    for (int x = 0; x < destinationImage.getWidth(); x++) {
+            for (int x = 0; x < destinationImage.getWidth(); x++) {
-    	        if (random.nextInt(100) < dirtiness) {
+                if (random.nextInt(100) < dirtiness) {
-    	            // Change the pixel color to black randomly based on the "dirtiness"
+                    // Change the pixel color to black randomly based on the "dirtiness"
-    	            destinationImage.setRGB(x, y, Color.BLACK.getRGB());
+                    destinationImage.setRGB(x, y, Color.BLACK.getRGB());
-    	        }
+                }
-    	    }
+            }
-    	}
+        }
 
-    	// Save the image
+        // Save the image
-    	ImageIO.write(destinationImage, "PNG", new File("scanned-1.png"));
+        ImageIO.write(destinationImage, "PNG", new File("scanned-1.png"));
 
+        PDDocument documentOut = new PDDocument();
+        for (int page = 1; page <= document.getNumberOfPages(); ++page) {
+            BufferedImage bim = ImageIO.read(new File("scanned-" + page + ".png"));
 
+            // Adjust the dimensions of the page
+            PDPage pdPage = new PDPage(new PDRectangle(bim.getWidth() - 1, bim.getHeight() - 1));
+            documentOut.addPage(pdPage);
 
+            PDImageXObject pdImage = LosslessFactory.createFromImage(documentOut, bim);
+            PDPageContentStream contentStream = new PDPageContentStream(documentOut, pdPage);
 
-    	
+            // Draw the image with a slight offset and enlarged dimensions
-    	
+            contentStream.drawImage(pdImage, -1, -1, bim.getWidth() + 2, bim.getHeight() + 2);
-
+            contentStream.close();
-    	PDDocument documentOut = new PDDocument();
+        }
-    	for (int page = 1; page <= document.getNumberOfPages(); ++page)
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-    	{
+        documentOut.save(baos);
-    	    BufferedImage bim = ImageIO.read(new File("scanned-" + page + ".png"));
+        documentOut.close();
-    	    
-    	    // Adjust the dimensions of the page
-    	    PDPage pdPage = new PDPage(new PDRectangle(bim.getWidth() - 1, bim.getHeight() - 1));
-    	    documentOut.addPage(pdPage);
-    	    
-    	    PDImageXObject pdImage = LosslessFactory.createFromImage(documentOut, bim);
-    	    PDPageContentStream contentStream = new PDPageContentStream(documentOut, pdPage);
-    	    
-    	    // Draw the image with a slight offset and enlarged dimensions
-    	    contentStream.drawImage(pdImage, -1, -1, bim.getWidth() + 2, bim.getHeight() + 2);
-    	    contentStream.close();
-    	}
-    	ByteArrayOutputStream baos = new ByteArrayOutputStream();
-    	documentOut.save(baos);
-    	documentOut.close();
 
         // Return the optimized PDF as a response
-        String outputFilename = inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scanned.pdf";
+        String outputFilename =
+                inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scanned.pdf";
         return WebResponseUtils.boasToWebResponse(baos, outputFilename);
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/MetadataController.java

@@ -7,6 +7,7 @@ import java.util.Calendar;
 import java.util.Map;
 import java.util.Map.Entry;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.cos.COSName;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDDocumentInformation;
@@ -19,6 +20,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.MetadataRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -27,7 +29,6 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Misc", description = "Miscellaneous APIs")
 public class MetadataController {
 
-
     private String checkUndefined(String entry) {
         // Check if the string is "undefined"
         if ("undefined".equals(entry)) {
@@ -36,13 +37,15 @@ public class MetadataController {
         }
         // Return the original string if it's not "undefined"
         return entry;
-
     }
 
     @PostMapping(consumes = "multipart/form-data", value = "/update-metadata")
-    @Operation(summary = "Update metadata of a PDF file",
+    @Operation(
-            description = "This endpoint allows you to update the metadata of a given PDF file. You can add, modify, or delete standard and custom metadata fields. Input:PDF Output:PDF Type:SISO")
+            summary = "Update metadata of a PDF file",
-    public ResponseEntity<byte[]> metadata(@ModelAttribute MetadataRequest request) throws IOException {
+            description =
+                    "This endpoint allows you to update the metadata of a given PDF file. You can add, modify, or delete standard and custom metadata fields. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> metadata(@ModelAttribute MetadataRequest request)
+            throws IOException {
 
         // Extract PDF file from the request object
         MultipartFile pdfFile = request.getFileInput();
@@ -61,11 +64,11 @@ public class MetadataController {
 
         // Extract additional custom parameters
         Map<String, String> allRequestParams = request.getAllRequestParams();
-        if(allRequestParams == null) {
+        if (allRequestParams == null) {
-        	allRequestParams = new java.util.HashMap<String, String>();
+            allRequestParams = new java.util.HashMap<String, String>();
         }
         // Load the PDF file into a PDDocument
-        PDDocument document = PDDocument.load(pdfFile.getBytes());
+        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
 
         // Get the document information from the PDF
         PDDocumentInformation info = document.getDocumentInformation();
@@ -89,7 +92,9 @@ public class MetadataController {
             }
             // Remove metadata from the PDF history
             document.getDocumentCatalog().getCOSObject().removeItem(COSName.getPDFName("Metadata"));
-            document.getDocumentCatalog().getCOSObject().removeItem(COSName.getPDFName("PieceInfo"));
+            document.getDocumentCatalog()
+                    .getCOSObject()
+                    .removeItem(COSName.getPDFName("PieceInfo"));
             author = null;
             creationDate = null;
             creator = null;
@@ -104,9 +109,17 @@ public class MetadataController {
             for (Entry<String, String> entry : allRequestParams.entrySet()) {
                 String key = entry.getKey();
                 // Check if the key is a standard metadata key
-                if (!key.equalsIgnoreCase("Author") && !key.equalsIgnoreCase("CreationDate") && !key.equalsIgnoreCase("Creator") && !key.equalsIgnoreCase("Keywords")
+                if (!key.equalsIgnoreCase("Author")
-                        && !key.equalsIgnoreCase("modificationDate") && !key.equalsIgnoreCase("Producer") && !key.equalsIgnoreCase("Subject") && !key.equalsIgnoreCase("Title")
+                        && !key.equalsIgnoreCase("CreationDate")
-                        && !key.equalsIgnoreCase("Trapped") && !key.contains("customKey") && !key.contains("customValue")) {
+                        && !key.equalsIgnoreCase("Creator")
+                        && !key.equalsIgnoreCase("Keywords")
+                        && !key.equalsIgnoreCase("modificationDate")
+                        && !key.equalsIgnoreCase("Producer")
+                        && !key.equalsIgnoreCase("Subject")
+                        && !key.equalsIgnoreCase("Title")
+                        && !key.equalsIgnoreCase("Trapped")
+                        && !key.contains("customKey")
+                        && !key.contains("customValue")) {
                     info.setCustomMetadataValue(key, entry.getValue());
                 } else if (key.contains("customKey")) {
                     int number = Integer.parseInt(key.replaceAll("\\D", ""));
@@ -119,7 +132,8 @@ public class MetadataController {
         if (creationDate != null && creationDate.length() > 0) {
             Calendar creationDateCal = Calendar.getInstance();
             try {
-                creationDateCal.setTime(new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse(creationDate));
+                creationDateCal.setTime(
+                        new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse(creationDate));
             } catch (ParseException e) {
                 e.printStackTrace();
             }
@@ -130,7 +144,8 @@ public class MetadataController {
         if (modificationDate != null && modificationDate.length() > 0) {
             Calendar modificationDateCal = Calendar.getInstance();
             try {
-                modificationDateCal.setTime(new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse(modificationDate));
+                modificationDateCal.setTime(
+                        new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse(modificationDate));
             } catch (ParseException e) {
                 e.printStackTrace();
             }
@@ -147,7 +162,8 @@ public class MetadataController {
         info.setTrapped(trapped);
 
         document.setDocumentInformation(info);
-        return WebResponseUtils.pdfDocToWebResponse(document, pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_metadata.pdf");
+        return WebResponseUtils.pdfDocToWebResponse(
+                document,
+                pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_metadata.pdf");
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/OCRController.java

@@ -26,6 +26,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.ProcessPdfWithOcrRequest;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
@@ -44,14 +45,21 @@ public class OCRController {
         if (files == null) {
             return Collections.emptyList();
         }
-        return Arrays.stream(files).filter(file -> file.getName().endsWith(".traineddata")).map(file -> file.getName().replace(".traineddata", ""))
+        return Arrays.stream(files)
-                .filter(lang -> !lang.equalsIgnoreCase("osd")).collect(Collectors.toList());
+                .filter(file -> file.getName().endsWith(".traineddata"))
+                .map(file -> file.getName().replace(".traineddata", ""))
+                .filter(lang -> !lang.equalsIgnoreCase("osd"))
+                .collect(Collectors.toList());
     }
 
     @PostMapping(consumes = "multipart/form-data", value = "/ocr-pdf")
-    @Operation(summary = "Process a PDF file with OCR",
+    @Operation(
-            description = "This endpoint processes a PDF file using OCR (Optical Character Recognition). Users can specify languages, sidecar, deskew, clean, cleanFinal, ocrType, ocrRenderType, and removeImagesAfter options. Input:PDF Output:PDF Type:SI-Conditional")
+            summary = "Process a PDF file with OCR",
-    public ResponseEntity<byte[]> processPdfWithOCR(@ModelAttribute ProcessPdfWithOcrRequest request) throws IOException, InterruptedException {
+            description =
+                    "This endpoint processes a PDF file using OCR (Optical Character Recognition). Users can specify languages, sidecar, deskew, clean, cleanFinal, ocrType, ocrRenderType, and removeImagesAfter options. Input:PDF Output:PDF Type:SI-Conditional")
+    public ResponseEntity<byte[]> processPdfWithOCR(
+            @ModelAttribute ProcessPdfWithOcrRequest request)
+            throws IOException, InterruptedException {
         MultipartFile inputFile = request.getFileInput();
         List<String> selectedLanguages = request.getLanguages();
         Boolean sidecar = request.isSidecar();
@@ -66,7 +74,7 @@ public class OCRController {
             throw new IOException("Please select at least one language.");
         }
 
-        if(!ocrRenderType.equals("hocr") && !ocrRenderType.equals("sandwich")) {
+        if (!ocrRenderType.equals("hocr") && !ocrRenderType.equals("sandwich")) {
             throw new IOException("ocrRenderType wrong");
         }
 
@@ -74,7 +82,8 @@ public class OCRController {
         List<String> availableLanguages = getAvailableTesseractLanguages();
 
         // Validate selected languages
-        selectedLanguages = selectedLanguages.stream().filter(availableLanguages::contains).toList();
+        selectedLanguages =
+                selectedLanguages.stream().filter(availableLanguages::contains).toList();
 
         if (selectedLanguages.isEmpty()) {
             throw new IOException("None of the selected languages are valid.");
@@ -92,8 +101,16 @@ public class OCRController {
         // Run OCR Command
         String languageOption = String.join("+", selectedLanguages);
 
-        
+        List<String> command =
-        List<String> command = new ArrayList<>(Arrays.asList("ocrmypdf", "--verbose", "2", "--output-type", "pdf", "--pdf-renderer" , ocrRenderType));
+                new ArrayList<>(
+                        Arrays.asList(
+                                "ocrmypdf",
+                                "--verbose",
+                                "2",
+                                "--output-type",
+                                "pdf",
+                                "--pdf-renderer",
+                                ocrRenderType));
 
         if (sidecar != null && sidecar) {
             sidecarTextPath = Files.createTempFile("sidecar", ".txt");
@@ -120,26 +137,42 @@ public class OCRController {
             }
         }
 
-        command.addAll(Arrays.asList("--language", languageOption, tempInputFile.toString(), tempOutputFile.toString()));
+        command.addAll(
+                Arrays.asList(
+                        "--language",
+                        languageOption,
+                        tempInputFile.toString(),
+                        tempOutputFile.toString()));
 
         // Run CLI command
-        ProcessExecutorResult result = ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF).runCommandWithOutputHandling(command);
+        ProcessExecutorResult result =
-        if(result.getRc() != 0 && result.getMessages().contains("multiprocessing/synchronize.py") && result.getMessages().contains("OSError: [Errno 38] Function not implemented")) {
+                ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
-        	command.add("--jobs");
+                        .runCommandWithOutputHandling(command);
-        	command.add("1");
+        if (result.getRc() != 0
-        	result = ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF).runCommandWithOutputHandling(command);
+                && result.getMessages().contains("multiprocessing/synchronize.py")
+                && result.getMessages().contains("OSError: [Errno 38] Function not implemented")) {
+            command.add("--jobs");
+            command.add("1");
+            result =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
+                            .runCommandWithOutputHandling(command);
         }
 
-
-        
-        
         // Remove images from the OCR processed PDF if the flag is set to true
         if (removeImagesAfter != null && removeImagesAfter) {
             Path tempPdfWithoutImages = Files.createTempFile("output_", "_no_images.pdf");
 
-            List<String> gsCommand = Arrays.asList("gs", "-sDEVICE=pdfwrite", "-dFILTERIMAGE", "-o", tempPdfWithoutImages.toString(), tempOutputFile.toString());
+            List<String> gsCommand =
+                    Arrays.asList(
+                            "gs",
+                            "-sDEVICE=pdfwrite",
+                            "-dFILTERIMAGE",
+                            "-o",
+                            tempPdfWithoutImages.toString(),
+                            tempOutputFile.toString());
 
-            ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT).runCommandWithOutputHandling(gsCommand);
+            ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
+                    .runCommandWithOutputHandling(gsCommand);
             tempOutputFile = tempPdfWithoutImages;
         }
         // Read the OCR processed PDF file
@@ -148,14 +181,17 @@ public class OCRController {
         Files.delete(tempInputFile);
 
         // Return the OCR processed PDF as a response
-        String outputFilename = inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_OCR.pdf";
+        String outputFilename =
+                inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_OCR.pdf";
 
         if (sidecar != null && sidecar) {
             // Create a zip file containing both the PDF and the text file
-            String outputZipFilename = inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_OCR.zip";
+            String outputZipFilename =
+                    inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_OCR.zip";
             Path tempZipFile = Files.createTempFile("output_", ".zip");
 
-            try (ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(tempZipFile.toFile()))) {
+            try (ZipOutputStream zipOut =
+                    new ZipOutputStream(new FileOutputStream(tempZipFile.toFile()))) {
                 // Add PDF file to the zip
                 ZipEntry pdfEntry = new ZipEntry(outputFilename);
                 zipOut.putNextEntry(pdfEntry);
@@ -177,13 +213,12 @@ public class OCRController {
             Files.delete(sidecarTextPath);
 
             // Return the zip file containing both the PDF and the text file
-            return WebResponseUtils.bytesToWebResponse(zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
+            return WebResponseUtils.bytesToWebResponse(
+                    zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
         } else {
             // Return the OCR processed PDF as a response
             Files.delete(tempOutputFile);
             return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
         }
-
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/OverlayImageController.java

@@ -14,6 +14,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.OverlayImageRequest;
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
@@ -27,9 +28,9 @@ public class OverlayImageController {
 
     @PostMapping(consumes = "multipart/form-data", value = "/add-image")
     @Operation(
-        summary = "Overlay image onto a PDF file",
+            summary = "Overlay image onto a PDF file",
-        description = "This endpoint overlays an image onto a PDF file at the specified coordinates. The image can be overlaid on every page of the PDF if specified.  Input:PDF/IMAGE Output:PDF Type:MF-SISO"
+            description =
-    )
+                    "This endpoint overlays an image onto a PDF file at the specified coordinates. The image can be overlaid on every page of the PDF if specified.  Input:PDF/IMAGE Output:PDF Type:SISO")
     public ResponseEntity<byte[]> overlayImage(@ModelAttribute OverlayImageRequest request) {
         MultipartFile pdfFile = request.getFileInput();
         MultipartFile imageFile = request.getImageFile();
@@ -41,7 +42,9 @@ public class OverlayImageController {
             byte[] imageBytes = imageFile.getBytes();
             byte[] result = PdfUtils.overlayImage(pdfBytes, imageBytes, x, y, everyPage);
 
-            return WebResponseUtils.bytesToWebResponse(result, pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_overlayed.pdf");
+            return WebResponseUtils.bytesToWebResponse(
+                    result,
+                    pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_overlayed.pdf");
         } catch (IOException e) {
             logger.error("Failed to add image to PDF", e);
             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);

src/main/java/stirling/software/SPDF/controller/api/misc/PageNumbersController.java

@@ -4,11 +4,13 @@ import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.List;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
 import org.apache.pdfbox.pdmodel.common.PDRectangle;
 import org.apache.pdfbox.pdmodel.font.PDType1Font;
+import org.apache.pdfbox.pdmodel.font.Standard14Fonts;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.MediaType;
@@ -21,6 +23,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.misc.AddPageNumbersRequest;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
@@ -33,17 +36,21 @@ public class PageNumbersController {
     private static final Logger logger = LoggerFactory.getLogger(PageNumbersController.class);
 
     @PostMapping(value = "/add-page-numbers", consumes = "multipart/form-data")
-    @Operation(summary = "Add page numbers to a PDF document", description = "This operation takes an input PDF file and adds page numbers to it. Input:PDF Output:PDF Type:SISO")
+    @Operation(
-    public ResponseEntity<byte[]> addPageNumbers(@ModelAttribute AddPageNumbersRequest request) throws IOException {
+            summary = "Add page numbers to a PDF document",
+            description =
+                    "This operation takes an input PDF file and adds page numbers to it. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> addPageNumbers(@ModelAttribute AddPageNumbersRequest request)
+            throws IOException {
         MultipartFile file = request.getFileInput();
         String customMargin = request.getCustomMargin();
         int position = request.getPosition();
         int startingNumber = request.getStartingNumber();
         String pagesToNumber = request.getPagesToNumber();
         String customText = request.getCustomText();
-    	int pageNumber = startingNumber;
+        int pageNumber = startingNumber;
-    	byte[] fileBytes = file.getBytes();
+        byte[] fileBytes = file.getBytes();
-        PDDocument document = PDDocument.load(fileBytes);
+        PDDocument document = Loader.loadPDF(fileBytes);
 
         float marginFactor;
         switch (customMargin.toLowerCase()) {
@@ -60,27 +67,35 @@ public class PageNumbersController {
                 marginFactor = 0.075f;
                 break;
 
-                
             default:
                 marginFactor = 0.035f;
                 break;
         }
 
         float fontSize = 12.0f;
-        PDType1Font font = PDType1Font.HELVETICA;
+        if (pagesToNumber == null || pagesToNumber.length() == 0) {
-        if(pagesToNumber == null || pagesToNumber.length() == 0) {
+            pagesToNumber = "all";
-        	pagesToNumber = "all";
         }
-        if(customText == null || customText.length() == 0) {
+        if (customText == null || customText.length() == 0) {
-        	customText = "{n}";
+            customText = "{n}";
         }
-        List<Integer> pagesToNumberList = GeneralUtils.parsePageList(pagesToNumber.split(","), document.getNumberOfPages());
+        List<Integer> pagesToNumberList =
+                GeneralUtils.parsePageList(pagesToNumber.split(","), document.getNumberOfPages());
 
         for (int i : pagesToNumberList) {
             PDPage page = document.getPage(i);
             PDRectangle pageSize = page.getMediaBox();
 
-            String text = customText != null ? customText.replace("{n}", String.valueOf(pageNumber)).replace("{total}", String.valueOf(document.getNumberOfPages())).replace("{filename}", file.getOriginalFilename().replaceFirst("[.][^.]+$", "")) : String.valueOf(pageNumber);
+            String text =
+                    customText != null
+                            ? customText
+                                    .replace("{n}", String.valueOf(pageNumber))
+                                    .replace("{total}", String.valueOf(document.getNumberOfPages()))
+                                    .replace(
+                                            "{filename}",
+                                            file.getOriginalFilename()
+                                                    .replaceFirst("[.][^.]+$", ""))
+                            : String.valueOf(pageNumber);
 
             float x, y;
 
@@ -88,10 +103,10 @@ public class PageNumbersController {
             int yGroup = 2 - (position - 1) / 3;
 
             switch (xGroup) {
-                case 0:  // left
+                case 0: // left
                     x = pageSize.getLowerLeftX() + marginFactor * pageSize.getWidth();
                     break;
-                case 1:  // center
+                case 1: // center
                     x = pageSize.getLowerLeftX() + (pageSize.getWidth() / 2);
                     break;
                 default: // right
@@ -100,10 +115,10 @@ public class PageNumbersController {
             }
 
             switch (yGroup) {
-                case 0:  // bottom
+                case 0: // bottom
                     y = pageSize.getLowerLeftY() + marginFactor * pageSize.getHeight();
                     break;
-                case 1:  // middle
+                case 1: // middle
                     y = pageSize.getLowerLeftY() + (pageSize.getHeight() / 2);
                     break;
                 default: // top
@@ -111,9 +126,11 @@ public class PageNumbersController {
                     break;
             }
 
-            PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true);
+            PDPageContentStream contentStream =
+                    new PDPageContentStream(
+                            document, page, PDPageContentStream.AppendMode.APPEND, true, true);
             contentStream.beginText();
-            contentStream.setFont(font, fontSize);
+            contentStream.setFont(new PDType1Font(Standard14Fonts.FontName.HELVETICA), fontSize);
             contentStream.newLineAtOffset(x, y);
             contentStream.showText(text);
             contentStream.endText();
@@ -126,10 +143,9 @@ public class PageNumbersController {
         document.save(baos);
         document.close();
 
-        return WebResponseUtils.bytesToWebResponse(baos.toByteArray(), file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_numbersAdded.pdf", MediaType.APPLICATION_PDF);
+        return WebResponseUtils.bytesToWebResponse(
-
+                baos.toByteArray(),
+                file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_numbersAdded.pdf",
+                MediaType.APPLICATION_PDF);
     }
-
-
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/RepairController.java

@@ -17,6 +17,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFFile;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
@@ -31,11 +32,12 @@ public class RepairController {
 
     @PostMapping(consumes = "multipart/form-data", value = "/repair")
     @Operation(
-        summary = "Repair a PDF file",
+            summary = "Repair a PDF file",
-        description = "This endpoint repairs a given PDF file by running Ghostscript command. The PDF is first saved to a temporary location, repaired, read back, and then returned as a response. Input:PDF Output:PDF Type:SISO"
+            description =
-    )
+                    "This endpoint repairs a given PDF file by running Ghostscript command. The PDF is first saved to a temporary location, repaired, read back, and then returned as a response. Input:PDF Output:PDF Type:SISO")
-    public ResponseEntity<byte[]> repairPdf(@ModelAttribute PDFFile request) throws IOException, InterruptedException {
+    public ResponseEntity<byte[]> repairPdf(@ModelAttribute PDFFile request)
-    	MultipartFile inputFile = request.getFileInput();
+            throws IOException, InterruptedException {
+        MultipartFile inputFile = request.getFileInput();
         // Save the uploaded file to a temporary location
         Path tempInputFile = Files.createTempFile("input_", ".pdf");
         inputFile.transferTo(tempInputFile.toFile());
@@ -50,8 +52,9 @@ public class RepairController {
         command.add("-sDEVICE=pdfwrite");
         command.add(tempInputFile.toString());
 
-
+        ProcessExecutorResult returnCode =
-        ProcessExecutorResult returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT).runCommandWithOutputHandling(command);
+                ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
+                        .runCommandWithOutputHandling(command);
 
         // Read the optimized PDF file
         byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
@@ -61,8 +64,8 @@ public class RepairController {
         Files.delete(tempOutputFile);
 
         // Return the optimized PDF as a response
-        String outputFilename = inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_repaired.pdf";
+        String outputFilename =
+                inputFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_repaired.pdf";
         return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
     }
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/ShowJavascript.java

@@ -3,6 +3,7 @@ package stirling.software.SPDF.controller.api.misc;
 import java.nio.charset.StandardCharsets;
 import java.util.Map;
 
+import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.common.PDNameTreeNode;
 import org.apache.pdfbox.pdmodel.interactive.action.PDActionJavaScript;
@@ -17,47 +18,60 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.api.PDFFile;
 import stirling.software.SPDF.utils.WebResponseUtils;
+
 @RestController
 @RequestMapping("/api/v1/misc")
 @Tag(name = "Misc", description = "Miscellaneous APIs")
 public class ShowJavascript {
 
     private static final Logger logger = LoggerFactory.getLogger(ShowJavascript.class);
+
     @PostMapping(consumes = "multipart/form-data", value = "/show-javascript")
-    @Operation(summary = "Grabs all JS from a PDF and returns a single JS file with all code", description = "desc. Input:PDF Output:JS Type:SISO")
+    @Operation(
+            summary = "Grabs all JS from a PDF and returns a single JS file with all code",
+            description = "desc. Input:PDF Output:JS Type:SISO")
     public ResponseEntity<byte[]> extractHeader(@ModelAttribute PDFFile request) throws Exception {
-    	MultipartFile inputFile = request.getFileInput();
+        MultipartFile inputFile = request.getFileInput();
         String script = "";
 
-        try (PDDocument document = PDDocument.load(inputFile.getInputStream())) {
+        try (PDDocument document = Loader.loadPDF(inputFile.getBytes())) {
 
-        	if(document.getDocumentCatalog() != null && document.getDocumentCatalog().getNames() != null) {
+            if (document.getDocumentCatalog() != null
-	            PDNameTreeNode<PDActionJavaScript> jsTree = document.getDocumentCatalog().getNames().getJavaScript();
+                    && document.getDocumentCatalog().getNames() != null) {
+                PDNameTreeNode<PDActionJavaScript> jsTree =
+                        document.getDocumentCatalog().getNames().getJavaScript();
 
-	            if (jsTree != null) {
+                if (jsTree != null) {
-	                Map<String, PDActionJavaScript> jsEntries = jsTree.getNames();
+                    Map<String, PDActionJavaScript> jsEntries = jsTree.getNames();
 
-	                for (Map.Entry<String, PDActionJavaScript> entry : jsEntries.entrySet()) {
+                    for (Map.Entry<String, PDActionJavaScript> entry : jsEntries.entrySet()) {
-	                    String name = entry.getKey();
+                        String name = entry.getKey();
-	                    PDActionJavaScript jsAction = entry.getValue();
+                        PDActionJavaScript jsAction = entry.getValue();
-	                    String jsCodeStr = jsAction.getAction();
+                        String jsCodeStr = jsAction.getAction();
 
-	                    script += "// File: " + inputFile.getOriginalFilename() + ", Script: " + name + "\n" + jsCodeStr + "\n";
+                        script +=
-	                }
+                                "// File: "
-	            }
+                                        + inputFile.getOriginalFilename()
-        	}
+                                        + ", Script: "
-
+                                        + name
-            if (script.isEmpty()) {
+                                        + "\n"
-                script = "PDF '" + inputFile.getOriginalFilename() + "' does not contain Javascript";
+                                        + jsCodeStr
+                                        + "\n";
+                    }
+                }
             }
 
-            return WebResponseUtils.bytesToWebResponse(script.getBytes(StandardCharsets.UTF_8), inputFile.getOriginalFilename() + ".js");
+            if (script.isEmpty()) {
+                script =
+                        "PDF '" + inputFile.getOriginalFilename() + "' does not contain Javascript";
+            }
+
+            return WebResponseUtils.bytesToWebResponse(
+                    script.getBytes(StandardCharsets.UTF_8),
+                    inputFile.getOriginalFilename() + ".js");
         }
     }
-    
-
-
-
 }

src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java

@@ -0,0 +1,311 @@
+package stirling.software.SPDF.controller.api.misc;
+
+import java.awt.Color;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.imageio.ImageIO;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.pdfbox.Loader;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.apache.pdfbox.pdmodel.font.PDFont;
+import org.apache.pdfbox.pdmodel.font.PDType0Font;
+import org.apache.pdfbox.pdmodel.font.PDType1Font;
+import org.apache.pdfbox.pdmodel.font.Standard14Fonts;
+import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
+import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
+import org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState;
+import org.apache.pdfbox.util.Matrix;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.api.misc.AddStampRequest;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@RequestMapping("/api/v1/misc")
+@Tag(name = "Misc", description = "Miscellaneous APIs")
+public class StampController {
+
+    @PostMapping(consumes = "multipart/form-data", value = "/add-stamp")
+    @Operation(
+            summary = "Add stamp to a PDF file",
+            description =
+                    "This endpoint adds a stamp to a given PDF file. Users can specify the watermark type (text or image), rotation, opacity, width spacer, and height spacer. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> addStamp(@ModelAttribute AddStampRequest request)
+            throws IOException, Exception {
+        MultipartFile pdfFile = request.getFileInput();
+        String watermarkType = request.getStampType();
+        String watermarkText = request.getStampText();
+        MultipartFile watermarkImage = request.getStampImage();
+        String alphabet = request.getAlphabet();
+        float fontSize = request.getFontSize();
+        float rotation = request.getRotation();
+        float opacity = request.getOpacity();
+        int position = request.getPosition(); // Updated to use 1-9 positioning logic
+        float overrideX = request.getOverrideX(); // New field for X override
+        float overrideY = request.getOverrideY(); // New field for Y override
+
+        String customColor = request.getCustomColor();
+        float marginFactor;
+        switch (request.getCustomMargin().toLowerCase()) {
+            case "small":
+                marginFactor = 0.02f;
+                break;
+            case "medium":
+                marginFactor = 0.035f;
+                break;
+            case "large":
+                marginFactor = 0.05f;
+                break;
+            case "x-large":
+                marginFactor = 0.075f;
+                break;
+
+            default:
+                marginFactor = 0.035f;
+                break;
+        }
+
+        // Load the input PDF
+        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
+
+        for (PDPage page : document.getPages()) {
+            PDPageContentStream contentStream =
+                    new PDPageContentStream(
+                            document, page, PDPageContentStream.AppendMode.APPEND, true, true);
+
+            PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
+            graphicsState.setNonStrokingAlphaConstant(opacity);
+            contentStream.setGraphicsStateParameters(graphicsState);
+
+            if (watermarkType.equalsIgnoreCase("text")) {
+                addTextStamp(
+                        contentStream,
+                        watermarkText,
+                        document,
+                        page,
+                        rotation,
+                        position,
+                        fontSize,
+                        alphabet,
+                        overrideX,
+                        overrideY,
+                        marginFactor,
+                        customColor);
+            } else if (watermarkType.equalsIgnoreCase("image")) {
+                addImageStamp(
+                        contentStream,
+                        watermarkImage,
+                        document,
+                        page,
+                        rotation,
+                        position,
+                        fontSize,
+                        overrideX,
+                        overrideY,
+                        marginFactor);
+            }
+
+            contentStream.close();
+        }
+
+        return WebResponseUtils.pdfDocToWebResponse(
+                document,
+                pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_watermarked.pdf");
+    }
+
+    private void addTextStamp(
+            PDPageContentStream contentStream,
+            String watermarkText,
+            PDDocument document,
+            PDPage page,
+            float rotation,
+            int position, // 1-9 positioning logic
+            float fontSize,
+            String alphabet,
+            float overrideX, // X override
+            float overrideY,
+            float marginFactor,
+            String colorString) // Y override
+            throws IOException {
+        String resourceDir = "";
+        PDFont font = new PDType1Font(Standard14Fonts.FontName.HELVETICA);
+        switch (alphabet) {
+            case "arabic":
+                resourceDir = "static/fonts/NotoSansArabic-Regular.ttf";
+                break;
+            case "japanese":
+                resourceDir = "static/fonts/Meiryo.ttf";
+                break;
+            case "korean":
+                resourceDir = "static/fonts/malgun.ttf";
+                break;
+            case "chinese":
+                resourceDir = "static/fonts/SimSun.ttf";
+                break;
+            case "roman":
+            default:
+                resourceDir = "static/fonts/NotoSans-Regular.ttf";
+                break;
+        }
+
+        if (!resourceDir.equals("")) {
+            ClassPathResource classPathResource = new ClassPathResource(resourceDir);
+            String fileExtension = resourceDir.substring(resourceDir.lastIndexOf("."));
+            File tempFile = File.createTempFile("NotoSansFont", fileExtension);
+            try (InputStream is = classPathResource.getInputStream();
+                    FileOutputStream os = new FileOutputStream(tempFile)) {
+                IOUtils.copy(is, os);
+            }
+
+            font = PDType0Font.load(document, tempFile);
+            tempFile.deleteOnExit();
+        }
+
+        contentStream.setFont(font, fontSize);
+
+        Color redactColor;
+        try {
+            if (!colorString.startsWith("#")) {
+                colorString = "#" + colorString;
+            }
+            redactColor = Color.decode(colorString);
+        } catch (NumberFormatException e) {
+
+            redactColor = Color.LIGHT_GRAY;
+        }
+
+        contentStream.setNonStrokingColor(redactColor);
+
+        PDRectangle pageSize = page.getMediaBox();
+        float x, y;
+
+        if (overrideX >= 0 && overrideY >= 0) {
+            // Use override values if provided
+            x = overrideX;
+            y = overrideY;
+        } else {
+            x =
+                    calculatePositionX(
+                            pageSize,
+                            position,
+                            fontSize,
+                            font,
+                            fontSize,
+                            watermarkText,
+                            marginFactor);
+            y = calculatePositionY(pageSize, position, fontSize, marginFactor);
+        }
+
+        contentStream.beginText();
+        contentStream.setTextMatrix(Matrix.getRotateInstance(Math.toRadians(rotation), x, y));
+        contentStream.showText(watermarkText);
+        contentStream.endText();
+    }
+
+    private void addImageStamp(
+            PDPageContentStream contentStream,
+            MultipartFile watermarkImage,
+            PDDocument document,
+            PDPage page,
+            float rotation,
+            int position, // 1-9 positioning logic
+            float fontSize,
+            float overrideX,
+            float overrideY,
+            float marginFactor)
+            throws IOException {
+
+        // Load the watermark image
+        BufferedImage image = ImageIO.read(watermarkImage.getInputStream());
+
+        // Compute width based on original aspect ratio
+        float aspectRatio = (float) image.getWidth() / (float) image.getHeight();
+
+        // Desired physical height (in PDF points)
+        float desiredPhysicalHeight = fontSize;
+
+        // Desired physical width based on the aspect ratio
+        float desiredPhysicalWidth = desiredPhysicalHeight * aspectRatio;
+
+        // Convert the BufferedImage to PDImageXObject
+        PDImageXObject xobject = LosslessFactory.createFromImage(document, image);
+
+        PDRectangle pageSize = page.getMediaBox();
+        float x, y;
+
+        if (overrideX >= 0 && overrideY >= 0) {
+            // Use override values if provided
+            x = overrideX;
+            y = overrideY;
+        } else {
+            x =
+                    calculatePositionX(
+                            pageSize, position, desiredPhysicalWidth, null, 0, null, marginFactor);
+            y = calculatePositionY(pageSize, position, fontSize, marginFactor);
+        }
+
+        contentStream.saveGraphicsState();
+        contentStream.transform(Matrix.getTranslateInstance(x, y));
+        contentStream.transform(Matrix.getRotateInstance(Math.toRadians(rotation), 0, 0));
+        contentStream.drawImage(xobject, 0, 0, desiredPhysicalWidth, desiredPhysicalHeight);
+        contentStream.restoreGraphicsState();
+    }
+
+    private float calculatePositionX(
+            PDRectangle pageSize,
+            int position,
+            float contentWidth,
+            PDFont font,
+            float fontSize,
+            String text,
+            float marginFactor)
+            throws IOException {
+        float actualWidth =
+                (text != null) ? calculateTextWidth(text, font, fontSize) : contentWidth;
+        switch (position % 3) {
+            case 1: // Left
+                return pageSize.getLowerLeftX() + marginFactor * pageSize.getWidth();
+            case 2: // Center
+                return (pageSize.getWidth() - actualWidth) / 2;
+            case 0: // Right
+                return pageSize.getUpperRightX() - actualWidth - marginFactor * pageSize.getWidth();
+            default:
+                return 0;
+        }
+    }
+
+    private float calculateTextWidth(String text, PDFont font, float fontSize) throws IOException {
+        return font.getStringWidth(text) / 1000 * fontSize;
+    }
+
+    private float calculatePositionY(
+            PDRectangle pageSize, int position, float height, float marginFactor) {
+        switch ((position - 1) / 3) {
+            case 0: // Top
+                return pageSize.getUpperRightY() - height - marginFactor * pageSize.getHeight();
+            case 1: // Middle
+                return (pageSize.getHeight() - height) / 2;
+            case 2: // Bottom
+                return pageSize.getLowerLeftY() + marginFactor * pageSize.getHeight();
+            default:
+                return 0;
+        }
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/pipeline/ApiDocService.java

@@ -1,9 +1,14 @@
 package stirling.software.SPDF.controller.api.pipeline;
+
+import java.util.Arrays;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
@@ -16,41 +21,93 @@ import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import jakarta.servlet.ServletContext;
+import stirling.software.SPDF.SPdfApplication;
 import stirling.software.SPDF.model.ApiEndpoint;
 import stirling.software.SPDF.model.Role;
+
 @Service
 public class ApiDocService {
 
     private final Map<String, ApiEndpoint> apiDocumentation = new HashMap<>();
 
-    @Autowired
+    private static final Logger logger = LoggerFactory.getLogger(ApiDocService.class);
-    private ServletContext servletContext;
+
+    @Autowired private ServletContext servletContext;
 
     private String getApiDocsUrl() {
         String contextPath = servletContext.getContextPath();
-        String port = System.getProperty("local.server.port");
+        String port = SPdfApplication.getPort();
-        if(port == null || port.length() == 0) {
-        	port="8080";
-        }
 
-        return "http://localhost:"+ port + contextPath + "/v1/api-docs";
+        return "http://localhost:" + port + contextPath + "/v1/api-docs";
     }
 
+    Map<String, List<String>> outputToFileTypes = new HashMap<>();
 
-    @Autowired(required=false)
+    public List getExtensionTypes(boolean output, String operationName) {
-	private UserServiceInterface userService;
+        if (outputToFileTypes.size() == 0) {
+            outputToFileTypes.put("PDF", Arrays.asList("pdf"));
+            outputToFileTypes.put(
+                    "IMAGE",
+                    Arrays.asList(
+                            "png", "jpg", "jpeg", "gif", "webp", "bmp", "tif", "tiff", "svg", "psd",
+                            "ai", "eps"));
+            outputToFileTypes.put(
+                    "ZIP",
+                    Arrays.asList("zip", "rar", "7z", "tar", "gz", "bz2", "xz", "lz", "lzma", "z"));
+            outputToFileTypes.put("WORD", Arrays.asList("doc", "docx", "odt", "rtf"));
+            outputToFileTypes.put("CSV", Arrays.asList("csv"));
+            outputToFileTypes.put("JS", Arrays.asList("js", "jsx"));
+            outputToFileTypes.put("HTML", Arrays.asList("html", "htm", "xhtml"));
+            outputToFileTypes.put("JSON", Arrays.asList("json"));
+            outputToFileTypes.put("TXT", Arrays.asList("txt", "text", "md", "markdown"));
+            outputToFileTypes.put("PPT", Arrays.asList("ppt", "pptx", "odp"));
+            outputToFileTypes.put("XML", Arrays.asList("xml", "xsd", "xsl"));
+            outputToFileTypes.put(
+                    "BOOK",
+                    Arrays.asList(
+                            "epub", "mobi", "azw3", "fb2", "txt",
+                            "docx"));
+            // type.
+        }
 
-	private String getApiKeyForUser() {
+        if (apiDocsJsonRootNode == null || apiDocumentation.size() == 0) {
-		if(userService == null)
+            loadApiDocumentation();
-			return "";
+        }
-		return userService.getApiKeyForUser(Role.INTERNAL_API_USER.getRoleId());
+        if (!apiDocumentation.containsKey(operationName)) {
-	}
+            return null;
+        }
 
-	JsonNode apiDocsJsonRootNode;
+        ApiEndpoint endpoint = apiDocumentation.get(operationName);
+        String description = endpoint.getDescription();
+        Pattern pattern = null;
+        if (output) {
+            pattern = Pattern.compile("Output:(\\w+)");
+        } else {
+            pattern = Pattern.compile("Input:(\\w+)");
+        }
+        Matcher matcher = pattern.matcher(description);
+        while (matcher.find()) {
+            String type = matcher.group(1).toUpperCase();
+            if (outputToFileTypes.containsKey(type)) {
+                return outputToFileTypes.get(type);
+            }
+        }
+        return null;
+    }
 
+    @Autowired(required = false)
+    private UserServiceInterface userService;
 
-	//@EventListener(ApplicationReadyEvent.class)
+    private String getApiKeyForUser() {
-	private synchronized void loadApiDocumentation() {
+        if (userService == null) return "";
+        return userService.getApiKeyForUser(Role.INTERNAL_API_USER.getRoleId());
+    }
+
+    JsonNode apiDocsJsonRootNode;
+
+    // @EventListener(ApplicationReadyEvent.class)
+    private synchronized void loadApiDocumentation() {
+        String apiDocsJson = "";
         try {
             HttpHeaders headers = new HttpHeaders();
             String apiKey = getApiKeyForUser();
@@ -60,32 +117,35 @@ public class ApiDocService {
             HttpEntity<String> entity = new HttpEntity<>(headers);
 
             RestTemplate restTemplate = new RestTemplate();
-            ResponseEntity<String> response = restTemplate.exchange(getApiDocsUrl(), HttpMethod.GET, entity, String.class);
+            ResponseEntity<String> response =
-            String apiDocsJson = response.getBody();
+                    restTemplate.exchange(getApiDocsUrl(), HttpMethod.GET, entity, String.class);
+            apiDocsJson = response.getBody();
 
             ObjectMapper mapper = new ObjectMapper();
             apiDocsJsonRootNode = mapper.readTree(apiDocsJson);
 
             JsonNode paths = apiDocsJsonRootNode.path("paths");
-            paths.fields().forEachRemaining(entry -> {
+            paths.fields()
-                String path = entry.getKey();
+                    .forEachRemaining(
-                JsonNode pathNode = entry.getValue();
+                            entry -> {
-                if (pathNode.has("post")) {
+                                String path = entry.getKey();
-                    JsonNode postNode = pathNode.get("post");
+                                JsonNode pathNode = entry.getValue();
-                    ApiEndpoint endpoint = new ApiEndpoint(path, postNode);
+                                if (pathNode.has("post")) {
-                    apiDocumentation.put(path, endpoint);
+                                    JsonNode postNode = pathNode.get("post");
-                }
+                                    ApiEndpoint endpoint = new ApiEndpoint(path, postNode);
-            });
+                                    apiDocumentation.put(path, endpoint);
+                                }
+                            });
         } catch (Exception e) {
             // Handle exceptions
-            e.printStackTrace();
+            logger.error("Error grabbing swagger doc, body result {}", apiDocsJson);
         }
     }
 
     public boolean isValidOperation(String operationName, Map<String, Object> parameters) {
-    	if(apiDocumentation.size() == 0) {
+        if (apiDocumentation.size() == 0) {
-    		loadApiDocumentation();
+            loadApiDocumentation();
-    	}
+        }
         if (!apiDocumentation.containsKey(operationName)) {
             return false;
         }
@@ -94,10 +154,10 @@ public class ApiDocService {
     }
 
     public boolean isMultiInput(String operationName) {
-    	if(apiDocsJsonRootNode == null || apiDocumentation.size() == 0) {
+        if (apiDocsJsonRootNode == null || apiDocumentation.size() == 0) {
-    		loadApiDocumentation();
+            loadApiDocumentation();
-    	}
+        }
-    	if (!apiDocumentation.containsKey(operationName)) {
+        if (!apiDocumentation.containsKey(operationName)) {
             return false;
         }
 
@@ -116,4 +176,3 @@ public class ApiDocService {
 }
 
 // Model class for API Endpoint
-

src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineController.java

@@ -2,7 +2,9 @@ package stirling.software.SPDF.controller.api.pipeline;
 
 import java.io.ByteArrayOutputStream;
 import java.io.InputStream;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
@@ -24,6 +26,7 @@ import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import io.swagger.v3.oas.annotations.tags.Tag;
+
 import stirling.software.SPDF.model.ApplicationProperties;
 import stirling.software.SPDF.model.PipelineConfig;
 import stirling.software.SPDF.model.api.HandleDataRequest;
@@ -34,84 +37,97 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Pipeline", description = "Pipeline APIs")
 public class PipelineController {
 
-	private static final Logger logger = LoggerFactory.getLogger(PipelineController.class);
+    private static final Logger logger = LoggerFactory.getLogger(PipelineController.class);
 
-	final String watchedFoldersDir = "./pipeline/watchedFolders/";
+    final String watchedFoldersDir = "./pipeline/watchedFolders/";
-	final String finishedFoldersDir = "./pipeline/finishedFolders/";
+    final String finishedFoldersDir = "./pipeline/finishedFolders/";
-	@Autowired
+    @Autowired PipelineProcessor processor;
-	PipelineProcessor processor;
 
+    @Autowired ApplicationProperties applicationProperties;
 
-	@Autowired
+    @Autowired private ObjectMapper objectMapper;
-	ApplicationProperties applicationProperties;
 
-	@Autowired
+    @PostMapping("/handleData")
-	private ObjectMapper objectMapper;
+    public ResponseEntity<byte[]> handleData(@ModelAttribute HandleDataRequest request)
+            throws JsonMappingException, JsonProcessingException {
+        if (!Boolean.TRUE.equals(applicationProperties.getSystem().getEnableAlphaFunctionality())) {
+            return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
+        }
 
-
+        MultipartFile[] files = request.getFileInput();
-	@PostMapping("/handleData")
+        String jsonString = request.getJson();
-	public ResponseEntity<byte[]> handleData(@ModelAttribute HandleDataRequest request) throws JsonMappingException, JsonProcessingException {
+        if (files == null) {
-		if (!Boolean.TRUE.equals(applicationProperties.getSystem().getEnableAlphaFunctionality())) {
+            return null;
-			return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
+        }
-		}
+        PipelineConfig config = objectMapper.readValue(jsonString, PipelineConfig.class);
-
+        logger.info("Received POST request to /handleData with {} files", files.length);
-		MultipartFile[] files = request.getFileInput();
+        try {
-		String jsonString = request.getJson();
+            List<Resource> inputFiles = processor.generateInputFiles(files);
-		if (files == null) {
+            if (inputFiles == null || inputFiles.size() == 0) {
-			return null;
+                return null;
-		}
-		PipelineConfig config = objectMapper.readValue(jsonString, PipelineConfig.class);
-		logger.info("Received POST request to /handleData with {} files", files.length);
-		try {
-			List<Resource> inputFiles = processor.generateInputFiles(files);
-			if(inputFiles == null  || inputFiles.size() == 0) {
-            	return null;
             }
-			List<Resource> outputFiles = processor.runPipelineAgainstFiles(inputFiles, config);
+            List<Resource> outputFiles = processor.runPipelineAgainstFiles(inputFiles, config);
-			if (outputFiles != null && outputFiles.size() == 1) {
+            if (outputFiles != null && outputFiles.size() == 1) {
-				// If there is only one file, return it directly
+                // If there is only one file, return it directly
-				Resource singleFile = outputFiles.get(0);
+                Resource singleFile = outputFiles.get(0);
-				InputStream is = singleFile.getInputStream();
+                InputStream is = singleFile.getInputStream();
-				byte[] bytes = new byte[(int) singleFile.contentLength()];
+                byte[] bytes = new byte[(int) singleFile.contentLength()];
-				is.read(bytes);
+                is.read(bytes);
-				is.close();
+                is.close();
 
-				logger.info("Returning single file response...");
+                logger.info("Returning single file response...");
-				return WebResponseUtils.bytesToWebResponse(bytes, singleFile.getFilename(),
+                return WebResponseUtils.bytesToWebResponse(
-						MediaType.APPLICATION_OCTET_STREAM);
+                        bytes, singleFile.getFilename(), MediaType.APPLICATION_OCTET_STREAM);
-			} else if (outputFiles == null) {
+            } else if (outputFiles == null) {
-				return null;
+                return null;
-			}
+            }
 
-			// Create a ByteArrayOutputStream to hold the zip
+            // Create a ByteArrayOutputStream to hold the zip
-			ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
-			ZipOutputStream zipOut = new ZipOutputStream(baos);
+            ZipOutputStream zipOut = new ZipOutputStream(baos);
 
-			// Loop through each file and add it to the zip
+            // A map to keep track of filenames and their counts
-			for (Resource file : outputFiles) {
+            Map<String, Integer> filenameCount = new HashMap<>();
-				ZipEntry zipEntry = new ZipEntry(file.getFilename());
-				zipOut.putNextEntry(zipEntry);
 
-				// Read the file into a byte array
+            // Loop through each file and add it to the zip
-				InputStream is = file.getInputStream();
+            for (Resource file : outputFiles) {
-				byte[] bytes = new byte[(int) file.contentLength()];
+                String originalFilename = file.getFilename();
-				is.read(bytes);
+                String filename = originalFilename;
 
-				// Write the bytes of the file to the zip
+                // Check if the filename already exists, and modify it if necessary
-				zipOut.write(bytes, 0, bytes.length);
+                if (filenameCount.containsKey(originalFilename)) {
-				zipOut.closeEntry();
+                    int count = filenameCount.get(originalFilename);
+                    String baseName = originalFilename.replaceAll("\\.[^.]*$", "");
+                    String extension = originalFilename.replaceAll("^.*\\.", "");
+                    filename = baseName + "(" + count + ")." + extension;
+                    filenameCount.put(originalFilename, count + 1);
+                } else {
+                    filenameCount.put(originalFilename, 1);
+                }
 
-				is.close();
+                ZipEntry zipEntry = new ZipEntry(filename);
-			}
+                zipOut.putNextEntry(zipEntry);
 
-			zipOut.close();
+                // Read the file into a byte array
+                InputStream is = file.getInputStream();
+                byte[] bytes = new byte[(int) file.contentLength()];
+                is.read(bytes);
 
-			logger.info("Returning zipped file response...");
+                // Write the bytes of the file to the zip
-			return WebResponseUtils.boasToWebResponse(baos, "output.zip", MediaType.APPLICATION_OCTET_STREAM);
+                zipOut.write(bytes, 0, bytes.length);
-		} catch (Exception e) {
+                zipOut.closeEntry();
-			logger.error("Error handling data: ", e);
-			return null;
-		}
-	}
 
+                is.close();
+            }
+
+            zipOut.close();
+
+            logger.info("Returning zipped file response...");
+            return WebResponseUtils.boasToWebResponse(
+                    baos, "output.zip", MediaType.APPLICATION_OCTET_STREAM);
+        } catch (Exception e) {
+            logger.error("Error handling data: ", e);
+            return null;
+        }
+    }
 }

src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineDirectoryProcessor.java

@@ -33,49 +33,47 @@ import stirling.software.SPDF.model.PipelineOperation;
 @Service
 public class PipelineDirectoryProcessor {
 
-	private static final Logger logger = LoggerFactory.getLogger(PipelineDirectoryProcessor.class);
+    private static final Logger logger = LoggerFactory.getLogger(PipelineDirectoryProcessor.class);
-    @Autowired
+    @Autowired private ObjectMapper objectMapper;
-    private ObjectMapper objectMapper;
+    @Autowired private ApiDocService apiDocService;
-    @Autowired
+    @Autowired private ApplicationProperties applicationProperties;
-    private ApiDocService apiDocService;
-    @Autowired
-    private ApplicationProperties applicationProperties;
 
     final String watchedFoldersDir = "./pipeline/watchedFolders/";
-	final String finishedFoldersDir = "./pipeline/finishedFolders/";
+    final String finishedFoldersDir = "./pipeline/finishedFolders/";
 
-    @Autowired
+    @Autowired PipelineProcessor processor;
-	PipelineProcessor processor;
 
     @Scheduled(fixedRate = 60000)
-	public void scanFolders() {
+    public void scanFolders() {
-		if (!Boolean.TRUE.equals(applicationProperties.getSystem().getEnableAlphaFunctionality())) {
+        if (!Boolean.TRUE.equals(applicationProperties.getSystem().getEnableAlphaFunctionality())) {
-			return;
+            return;
-		}
+        }
-		Path watchedFolderPath = Paths.get(watchedFoldersDir);
+        Path watchedFolderPath = Paths.get(watchedFoldersDir);
-		if (!Files.exists(watchedFolderPath)) {
+        if (!Files.exists(watchedFolderPath)) {
-			try {
+            try {
-				Files.createDirectories(watchedFolderPath);
+                Files.createDirectories(watchedFolderPath);
-				logger.info("Created directory: {}", watchedFolderPath);
+                logger.info("Created directory: {}", watchedFolderPath);
-			} catch (IOException e) {
+            } catch (IOException e) {
-				logger.error("Error creating directory: {}", watchedFolderPath, e);
+                logger.error("Error creating directory: {}", watchedFolderPath, e);
-				return;
+                return;
-			}
+            }
-		}
+        }
-		try (Stream<Path> paths = Files.walk(watchedFolderPath)) {
+        try (Stream<Path> paths = Files.walk(watchedFolderPath)) {
-			paths.filter(Files::isDirectory).forEach(t -> {
+            paths.filter(Files::isDirectory)
-				try {
+                    .forEach(
-					if (!t.equals(watchedFolderPath) && !t.endsWith("processing")) {
+                            t -> {
-						handleDirectory(t);
+                                try {
-					}
+                                    if (!t.equals(watchedFolderPath) && !t.endsWith("processing")) {
-				} catch (Exception e) {
+                                        handleDirectory(t);
-					logger.error("Error handling directory: {}", t, e);
+                                    }
-				}
+                                } catch (Exception e) {
-			});
+                                    logger.error("Error handling directory: {}", t, e);
-		} catch (Exception e) {
+                                }
-			logger.error("Error walking through directory: {}", watchedFolderPath, e);
+                            });
-		}
+        } catch (Exception e) {
-	}
+            logger.error("Error walking through directory: {}", watchedFolderPath, e);
+        }
+    }
 
     public void handleDirectory(Path dir) throws IOException {
         logger.info("Handling directory: {}", dir);
@@ -113,13 +111,14 @@ public class PipelineDirectoryProcessor {
         return objectMapper.readValue(jsonString, PipelineConfig.class);
     }
 
-    private void processPipelineOperations(Path dir, Path processingDir, Path jsonFile, PipelineConfig config) throws IOException {
+    private void processPipelineOperations(
+            Path dir, Path processingDir, Path jsonFile, PipelineConfig config) throws IOException {
         for (PipelineOperation operation : config.getOperations()) {
             validateOperation(operation);
             File[] files = collectFilesForProcessing(dir, jsonFile, operation);
-            if(files == null || files.length == 0) {
+            if (files == null || files.length == 0) {
-            	logger.debug("No files detected for {} ", dir);
+                logger.debug("No files detected for {} ", dir);
-            	return;
+                return;
             }
             List<File> filesToProcess = prepareFilesForProcessing(files, processingDir);
             runPipelineAgainstFiles(filesToProcess, config, dir, processingDir);
@@ -132,20 +131,22 @@ public class PipelineDirectoryProcessor {
         }
     }
 
-    private File[] collectFilesForProcessing(Path dir, Path jsonFile, PipelineOperation operation) throws IOException {
+    private File[] collectFilesForProcessing(Path dir, Path jsonFile, PipelineOperation operation)
+            throws IOException {
         try (Stream<Path> paths = Files.list(dir)) {
             if ("automated".equals(operation.getParameters().get("fileInput"))) {
                 return paths.filter(path -> !Files.isDirectory(path) && !path.equals(jsonFile))
-                            .map(Path::toFile)
+                        .map(Path::toFile)
-                            .toArray(File[]::new);
+                        .toArray(File[]::new);
             } else {
                 String fileInput = (String) operation.getParameters().get("fileInput");
-                return new File[]{new File(fileInput)};
+                return new File[] {new File(fileInput)};
             }
         }
     }
 
-    private List<File> prepareFilesForProcessing(File[] files, Path processingDir) throws IOException {
+    private List<File> prepareFilesForProcessing(File[] files, Path processingDir)
+            throws IOException {
         List<File> filesToProcess = new ArrayList<>();
         for (File file : files) {
             Path targetPath = resolveUniqueFilePath(processingDir, file.getName());
@@ -173,27 +174,33 @@ public class PipelineDirectoryProcessor {
         if (dotIndex == -1) {
             return originalFileName + suffix;
         } else {
-            return originalFileName.substring(0, dotIndex) + suffix + originalFileName.substring(dotIndex);
+            return originalFileName.substring(0, dotIndex)
+                    + suffix
+                    + originalFileName.substring(dotIndex);
         }
     }
 
-    private void runPipelineAgainstFiles(List<File> filesToProcess, PipelineConfig config, Path dir, Path processingDir) throws IOException {
+    private void runPipelineAgainstFiles(
+            List<File> filesToProcess, PipelineConfig config, Path dir, Path processingDir)
+            throws IOException {
         try {
-            List<Resource> inputFiles = processor.generateInputFiles(filesToProcess.toArray(new File[0]));
+            List<Resource> inputFiles =
-            if(inputFiles == null  || inputFiles.size() == 0) {
+                    processor.generateInputFiles(filesToProcess.toArray(new File[0]));
-            	return;
+            if (inputFiles == null || inputFiles.size() == 0) {
+                return;
             }
-            List<Resource> outputFiles =  processor.runPipelineAgainstFiles(inputFiles, config);
+            List<Resource> outputFiles = processor.runPipelineAgainstFiles(inputFiles, config);
             if (outputFiles == null) return;
             moveAndRenameFiles(outputFiles, config, dir);
             deleteOriginalFiles(filesToProcess, processingDir);
         } catch (Exception e) {
-        	logger.error("error during processing", e);
+            logger.error("error during processing", e);
             moveFilesBack(filesToProcess, processingDir);
         }
     }
 
-    private void moveAndRenameFiles(List<Resource> resources, PipelineConfig config, Path dir) throws IOException {
+    private void moveAndRenameFiles(List<Resource> resources, PipelineConfig config, Path dir)
+            throws IOException {
         for (Resource resource : resources) {
             String outputFileName = createOutputFileName(resource, config);
             Path outputPath = determineOutputPath(config, dir);
@@ -217,26 +224,36 @@ public class PipelineDirectoryProcessor {
         String baseName = resourceName.substring(0, resourceName.lastIndexOf('.'));
         String extension = resourceName.substring(resourceName.lastIndexOf('.') + 1);
 
-        String outputFileName = config.getOutputPattern()
+        String outputFileName =
-            .replace("{filename}", baseName)
+                config.getOutputPattern()
-            .replace("{pipelineName}", config.getName())
+                                .replace("{filename}", baseName)
-            .replace("{date}", LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd")))
+                                .replace("{pipelineName}", config.getName())
-            .replace("{time}", LocalTime.now().format(DateTimeFormatter.ofPattern("HHmmss")))
+                                .replace(
-            + "." + extension;
+                                        "{date}",
+                                        LocalDate.now()
+                                                .format(DateTimeFormatter.ofPattern("yyyyMMdd")))
+                                .replace(
+                                        "{time}",
+                                        LocalTime.now()
+                                                .format(DateTimeFormatter.ofPattern("HHmmss")))
+                        + "."
+                        + extension;
 
         return outputFileName;
     }
 
     private Path determineOutputPath(PipelineConfig config, Path dir) {
-        String outputDir = config.getOutputDir()
+        String outputDir =
-            .replace("{outputFolder}", finishedFoldersDir)
+                config.getOutputDir()
-            .replace("{folderName}", dir.toString())
+                        .replace("{outputFolder}", finishedFoldersDir)
-            .replaceAll("\\\\?watchedFolders", "");
+                        .replace("{folderName}", dir.toString())
+                        .replaceAll("\\\\?watchedFolders", "");
 
         return Paths.get(outputDir).isAbsolute() ? Paths.get(outputDir) : Paths.get(".", outputDir);
     }
 
-    private void deleteOriginalFiles(List<File> filesToProcess, Path processingDir) throws IOException {
+    private void deleteOriginalFiles(List<File> filesToProcess, Path processingDir)
+            throws IOException {
         for (File file : filesToProcess) {
             Files.deleteIfExists(processingDir.resolve(file.getName()));
             logger.info("Deleted original file: {}", file.getName());
@@ -247,12 +264,13 @@ public class PipelineDirectoryProcessor {
         for (File file : filesToProcess) {
             try {
                 Files.move(processingDir.resolve(file.getName()), file.toPath());
-                logger.info("Moved file back to original location: {} , {}",file.toPath(), file.getName());
+                logger.info(
+                        "Moved file back to original location: {} , {}",
+                        file.toPath(),
+                        file.getName());
             } catch (IOException e) {
                 logger.error("Error moving file back to original location: {}", file.getName(), e);
             }
         }
     }
-
-    
 }

src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineProcessor.java

@@ -5,10 +5,13 @@ import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.PrintStream;
+import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -34,6 +37,7 @@ import org.springframework.web.client.RestTemplate;
 import org.springframework.web.multipart.MultipartFile;
 
 import jakarta.servlet.ServletContext;
+import stirling.software.SPDF.SPdfApplication;
 import stirling.software.SPDF.model.PipelineConfig;
 import stirling.software.SPDF.model.PipelineOperation;
 import stirling.software.SPDF.model.Role;
@@ -41,150 +45,163 @@ import stirling.software.SPDF.model.Role;
 @Service
 public class PipelineProcessor {
 
-	private static final Logger logger = LoggerFactory.getLogger(PipelineProcessor.class);
+    private static final Logger logger = LoggerFactory.getLogger(PipelineProcessor.class);
 
+    @Autowired private ApiDocService apiDocService;
 
-	@Autowired
+    @Autowired(required = false)
-	private ApiDocService apiDocService;
-    
-	@Autowired
     private UserServiceInterface userService;
 
-	@Autowired
+    @Autowired private ServletContext servletContext;
-    private ServletContext servletContext;
 
+    private String getApiKeyForUser() {
+        if (userService == null) return "";
+        return userService.getApiKeyForUser(Role.INTERNAL_API_USER.getRoleId());
+    }
 
+    private String getBaseUrl() {
+        String contextPath = servletContext.getContextPath();
+        String port = SPdfApplication.getPort();
 
+        return "http://localhost:" + port + contextPath + "/";
+    }
 
-	private String getApiKeyForUser() {
+    List<Resource> runPipelineAgainstFiles(List<Resource> outputFiles, PipelineConfig config)
-		if (userService == null)
+            throws Exception {
-			return "";
-		return userService.getApiKeyForUser(Role.INTERNAL_API_USER.getRoleId());
-	}
 
+        ByteArrayOutputStream logStream = new ByteArrayOutputStream();
+        PrintStream logPrintStream = new PrintStream(logStream);
 
-	private String getBaseUrl() {
+        boolean hasErrors = false;
-		String contextPath = servletContext.getContextPath();
-		return "http://localhost:8080" + contextPath + "/";
-	}
 
+        for (PipelineOperation pipelineOperation : config.getOperations()) {
+            String operation = pipelineOperation.getOperation();
+            boolean isMultiInputOperation = apiDocService.isMultiInput(operation);
 
+            logger.info(
+                    "Running operation: {} isMultiInputOperation {}",
+                    operation,
+                    isMultiInputOperation);
+            Map<String, Object> parameters = pipelineOperation.getParameters();
+            List<String> inputFileTypes = apiDocService.getExtensionTypes(false, operation);
+            if (inputFileTypes == null) {
+                inputFileTypes = new ArrayList<String>(Arrays.asList("ALL"));
+            }
+            // List outputFileTypes = apiDocService.getExtensionTypes(true, operation);
 
-	List<Resource> runPipelineAgainstFiles(List<Resource> outputFiles, PipelineConfig config) throws Exception {
+            String url = getBaseUrl() + operation;
 
-		ByteArrayOutputStream logStream = new ByteArrayOutputStream();
+            List<Resource> newOutputFiles = new ArrayList<>();
-		PrintStream logPrintStream = new PrintStream(logStream);
+            if (!isMultiInputOperation) {
+                for (Resource file : outputFiles) {
+                    boolean hasInputFileType = false;
+                    for (String extension : inputFileTypes) {
+                        if (extension.equals("ALL") || file.getFilename().endsWith(extension)) {
+                            hasInputFileType = true;
+                            MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
+                            body.add("fileInput", file);
 
-		boolean hasErrors = false;
+                            for (Entry<String, Object> entry : parameters.entrySet()) {
+                                body.add(entry.getKey(), entry.getValue());
+                            }
 
-		for (PipelineOperation pipelineOperation : config.getOperations()) {
+                            ResponseEntity<byte[]> response = sendWebRequest(url, body);
-			String operation = pipelineOperation.getOperation();
-			boolean isMultiInputOperation = apiDocService.isMultiInput(operation);
 
-			logger.info("Running operation: {} isMultiInputOperation {}", operation, isMultiInputOperation);
+                            // If the operation is filter and the response body is null or empty,
-			Map<String, Object> parameters = pipelineOperation.getParameters();
+                            // skip
-			String inputFileExtension = "";
+                            // this
+                            // file
+                            if (operation.startsWith("filter-")
+                                    && (response.getBody() == null
+                                            || response.getBody().length == 0)) {
+                                logger.info("Skipping file due to failing {}", operation);
+                                continue;
+                            }
 
-			//TODO
+                            if (!response.getStatusCode().equals(HttpStatus.OK)) {
-			//if (operationNode.has("inputFileType")) {
+                                logPrintStream.println("Error: " + response.getBody());
-			//	inputFileExtension = operationNode.get("inputFileType").asText();
+                                hasErrors = true;
-			//} else {
+                                continue;
-				inputFileExtension = ".pdf";
+                            }
-			//}
+                            processOutputFiles(operation, response, newOutputFiles);
-			final String finalInputFileExtension = inputFileExtension;
+                        }
+                    }
 
-			String url = getBaseUrl() + operation;
+                    if (!hasInputFileType) {
+                        logPrintStream.println(
+                                "No files with extension "
+                                        + String.join(", ", inputFileTypes)
+                                        + " found for operation "
+                                        + operation);
+                        hasErrors = true;
+                    }
+                }
 
-			List<Resource> newOutputFiles = new ArrayList<>();
+            } else {
-			if (!isMultiInputOperation) {
+                // Filter and collect all files that match the inputFileExtension
-				for (Resource file : outputFiles) {
+                List<Resource> matchingFiles;
-					boolean hasInputFileType = false;
+                if (inputFileTypes.contains("ALL")) {
-					if (file.getFilename().endsWith(inputFileExtension)) {
+                    matchingFiles = new ArrayList<>(outputFiles);
-						hasInputFileType = true;
+                } else {
-						MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
+                    final List<String> finalinputFileTypes = inputFileTypes;
-						body.add("fileInput", file);
+                    matchingFiles =
+                            outputFiles.stream()
+                                    .filter(
+                                            file ->
+                                                    finalinputFileTypes.stream()
+                                                            .anyMatch(file.getFilename()::endsWith))
+                                    .collect(Collectors.toList());
+                }
 
+                // Check if there are matching files
+                if (!matchingFiles.isEmpty()) {
+                    // Create a new MultiValueMap for the request body
+                    MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
 
-						for(Entry<String, Object> entry : parameters.entrySet()) {
+                    // Add all matching files to the body
-							body.add(entry.getKey(), entry.getValue());
+                    for (Resource file : matchingFiles) {
-						}
+                        body.add("fileInput", file);
+                    }
 
-						ResponseEntity<byte[]> response = sendWebRequest(url, body);
+                    for (Entry<String, Object> entry : parameters.entrySet()) {
+                        body.add(entry.getKey(), entry.getValue());
+                    }
 
-						// If the operation is filter and the response body is null or empty, skip this
+                    ResponseEntity<byte[]> response = sendWebRequest(url, body);
-						// file
-						if (operation.startsWith("filter-")
-								&& (response.getBody() == null || response.getBody().length == 0)) {
-							logger.info("Skipping file due to failing {}", operation);
-							continue;
-						}
 
-						if (!response.getStatusCode().equals(HttpStatus.OK)) {
+                    // Handle the response
-							logPrintStream.println("Error: " + response.getBody());
+                    if (response.getStatusCode().equals(HttpStatus.OK)) {
-							hasErrors = true;
+                        processOutputFiles(operation, response, newOutputFiles);
-							continue;
+                    } else {
-						}
+                        // Log error if the response status is not OK
-						processOutputFiles(operation, file.getFilename(), response, newOutputFiles);
+                        logPrintStream.println(
+                                "Error in multi-input operation: " + response.getBody());
+                        hasErrors = true;
+                    }
+                } else {
+                    logPrintStream.println(
+                            "No files with extension "
+                                    + String.join(", ", inputFileTypes)
+                                    + " found for multi-input operation "
+                                    + operation);
+                    hasErrors = true;
+                }
+            }
+            logPrintStream.close();
+            outputFiles = newOutputFiles;
+        }
+        if (hasErrors) {
+            logger.error("Errors occurred during processing. Log: {}", logStream.toString());
+        }
 
-					}
+        return outputFiles;
+    }
 
-					if (!hasInputFileType) {
+    private ResponseEntity<byte[]> sendWebRequest(String url, MultiValueMap<String, Object> body) {
-						logPrintStream.println(
+        RestTemplate restTemplate = new RestTemplate();
-								"No files with extension " + inputFileExtension + " found for operation " + operation);
-						hasErrors = true;
-					}
 
-					outputFiles = newOutputFiles;
+        // Set up headers, including API key
-				}
 
-			} else {
-				 // Filter and collect all files that match the inputFileExtension
-			    List<Resource> matchingFiles = outputFiles.stream()
-			                                              .filter(file -> file.getFilename().endsWith(finalInputFileExtension))
-			                                              .collect(Collectors.toList());
-
-			    // Check if there are matching files
-			    if (!matchingFiles.isEmpty()) {
-			        // Create a new MultiValueMap for the request body
-			        MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
-
-			        // Add all matching files to the body
-			        for (Resource file : matchingFiles) {
-			            body.add("fileInput", file);
-			        }
-
-			        for(Entry<String, Object> entry : parameters.entrySet()) {
-						body.add(entry.getKey(), entry.getValue());
-					}
-		        
-			        ResponseEntity<byte[]> response = sendWebRequest(url, body);
-
-			        // Handle the response
-			        if (response.getStatusCode().equals(HttpStatus.OK)) {
-			        	processOutputFiles(operation, matchingFiles.get(0).getFilename(), response, newOutputFiles);
-			        } else {
-			            // Log error if the response status is not OK
-			            logPrintStream.println("Error in multi-input operation: " + response.getBody());
-			            hasErrors = true;
-			        }
-			    } else {
-			        logPrintStream.println("No files with extension " + inputFileExtension + " found for multi-input operation " + operation);
-			        hasErrors = true;
-			    }
-			}
-			logPrintStream.close();
-
-		}
-		if (hasErrors) {
-			logger.error("Errors occurred during processing. Log: {}", logStream.toString());
-		}
-		return outputFiles;
-	}
-
-	private ResponseEntity<byte[]> sendWebRequest(String url, MultiValueMap<String, Object> body ){
-		RestTemplate restTemplate = new RestTemplate();
-		
-		 // Set up headers, including API key
         HttpHeaders headers = new HttpHeaders();
         String apiKey = getApiKeyForUser();
         headers.add("X-API-Key", apiKey);
@@ -195,134 +212,182 @@ public class PipelineProcessor {
 
         // Make the request to the REST endpoint
         return restTemplate.exchange(url, HttpMethod.POST, entity, byte[].class);
-	}
+    }
 
-	private List<Resource> processOutputFiles(String operation, String fileName, ResponseEntity<byte[]> response, List<Resource> newOutputFiles) throws IOException{
+    public static String removeTrailingNaming(String filename) {
-		// Define filename
+        // Splitting filename into name and extension
-		String newFilename;
+        int dotIndex = filename.lastIndexOf(".");
-		if ("auto-rename".equals(operation)) {
+        if (dotIndex == -1) {
-			// If the operation is "auto-rename", generate a new filename.
+            // No extension found
-			// This is a simple example of generating a filename using current timestamp.
+            return filename;
-			// Modify as per your needs.
+        }
-			newFilename = "file_" + System.currentTimeMillis();
+        String name = filename.substring(0, dotIndex);
-		} else {
+        String extension = filename.substring(dotIndex);
-			// Otherwise, keep the original filename.
-			newFilename = fileName;
-		}
 
-		// Check if the response body is a zip file
+        // Finding the last underscore
-		if (isZip(response.getBody())) {
+        int underscoreIndex = name.lastIndexOf("_");
-			// Unzip the file and add all the files to the new output files
+        if (underscoreIndex == -1) {
-			newOutputFiles.addAll(unzip(response.getBody()));
+            // No underscore found
-		} else {
+            return filename;
-			Resource outputResource = new ByteArrayResource(response.getBody()) {
+        }
-				@Override
-				public String getFilename() {
-					return newFilename;
-				}
-			};
-			newOutputFiles.add(outputResource);
-		}
 
-		return newOutputFiles;
+        // Removing the last part and reattaching the extension
+        return name.substring(0, underscoreIndex) + extension;
+    }
 
-	}
+    private List<Resource> processOutputFiles(
-	List<Resource> generateInputFiles(File[] files) throws Exception {
+            String operation, ResponseEntity<byte[]> response, List<Resource> newOutputFiles)
-		if (files == null || files.length == 0) {
+            throws IOException {
-			logger.info("No files");
+        // Define filename
-			return null;
+        String newFilename;
-		}
+        if (operation.contains("auto-rename")) {
+            // If the operation is "auto-rename", generate a new filename.
+            // This is a simple example of generating a filename using current timestamp.
+            // Modify as per your needs.
 
+            newFilename = extractFilename(response);
+        } else {
+            // Otherwise, keep the original filename.
+            newFilename = removeTrailingNaming(extractFilename(response));
+        }
 
-		List<Resource> outputFiles = new ArrayList<>();
+        // Check if the response body is a zip file
+        if (isZip(response.getBody())) {
+            // Unzip the file and add all the files to the new output files
+            newOutputFiles.addAll(unzip(response.getBody()));
+        } else {
+            Resource outputResource =
+                    new ByteArrayResource(response.getBody()) {
+                        @Override
+                        public String getFilename() {
+                            return newFilename;
+                        }
+                    };
+            newOutputFiles.add(outputResource);
+        }
 
-		for (File file : files) {
+        return newOutputFiles;
-			Path path = Paths.get(file.getAbsolutePath());
+    }
-			logger.info("Reading file: " + path); // debug statement
 
-			if (Files.exists(path)) {
+    public String extractFilename(ResponseEntity<byte[]> response) {
-				Resource fileResource = new ByteArrayResource(Files.readAllBytes(path)) {
+        String filename = "default-filename.ext"; // Default filename if not found
-					@Override
-					public String getFilename() {
-						return file.getName();
-					}
-				};
-				outputFiles.add(fileResource);
-			} else {
-				logger.info("File not found: " + path);
-			}
-		}
-		logger.info("Files successfully loaded. Starting processing...");
-		return outputFiles;
-	}
 
-	List<Resource> generateInputFiles(MultipartFile[] files) throws Exception {
+        HttpHeaders headers = response.getHeaders();
-		if (files == null || files.length == 0) {
+        String contentDisposition = headers.getFirst(HttpHeaders.CONTENT_DISPOSITION);
-			logger.info("No files");
-			return null;
-		}
 
-		List<Resource> outputFiles = new ArrayList<>();
+        if (contentDisposition != null && !contentDisposition.isEmpty()) {
+            String[] parts = contentDisposition.split(";");
+            for (String part : parts) {
+                if (part.trim().startsWith("filename")) {
+                    // Extracts filename and removes quotes if present
+                    filename = part.split("=")[1].trim().replace("\"", "");
+                    filename = URLDecoder.decode(filename, StandardCharsets.UTF_8);
 
-		for (MultipartFile file : files) {
+                    break;
-			Resource fileResource = new ByteArrayResource(file.getBytes()) {
+                }
-				@Override
+            }
-				public String getFilename() {
+        }
-					return file.getOriginalFilename();
-				}
-			};
-			outputFiles.add(fileResource);
-		}
-		logger.info("Files successfully loaded. Starting processing...");
-		return outputFiles;
-	}
 
-	private boolean isZip(byte[] data) {
+        return filename;
-		if (data == null || data.length < 4) {
+    }
-			return false;
-		}
 
-		// Check the first four bytes of the data against the standard zip magic number
+    List<Resource> generateInputFiles(File[] files) throws Exception {
-		return data[0] == 0x50 && data[1] == 0x4B && data[2] == 0x03 && data[3] == 0x04;
+        if (files == null || files.length == 0) {
-	}
+            logger.info("No files");
+            return null;
+        }
 
-	private List<Resource> unzip(byte[] data) throws IOException {
+        List<Resource> outputFiles = new ArrayList<>();
-		logger.info("Unzipping data of length: {}", data.length);
-		List<Resource> unzippedFiles = new ArrayList<>();
 
-		try (ByteArrayInputStream bais = new ByteArrayInputStream(data);
+        for (File file : files) {
-				ZipInputStream zis = new ZipInputStream(bais)) {
+            Path path = Paths.get(file.getAbsolutePath());
+            logger.info("Reading file: " + path); // debug statement
 
-			ZipEntry entry;
+            if (Files.exists(path)) {
-			while ((entry = zis.getNextEntry()) != null) {
+                Resource fileResource =
-				ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                        new ByteArrayResource(Files.readAllBytes(path)) {
-				byte[] buffer = new byte[1024];
+                            @Override
-				int count;
+                            public String getFilename() {
+                                return file.getName();
+                            }
+                        };
+                outputFiles.add(fileResource);
+            } else {
+                logger.info("File not found: " + path);
+            }
+        }
+        logger.info("Files successfully loaded. Starting processing...");
+        return outputFiles;
+    }
 
-				while ((count = zis.read(buffer)) != -1) {
+    List<Resource> generateInputFiles(MultipartFile[] files) throws Exception {
-					baos.write(buffer, 0, count);
+        if (files == null || files.length == 0) {
-				}
+            logger.info("No files");
+            return null;
+        }
 
-				final String filename = entry.getName();
+        List<Resource> outputFiles = new ArrayList<>();
-				Resource fileResource = new ByteArrayResource(baos.toByteArray()) {
-					@Override
-					public String getFilename() {
-						return filename;
-					}
-				};
 
-				// If the unzipped file is a zip file, unzip it
+        for (MultipartFile file : files) {
-				if (isZip(baos.toByteArray())) {
+            Resource fileResource =
-					logger.info("File {} is a zip file. Unzipping...", filename);
+                    new ByteArrayResource(file.getBytes()) {
-					unzippedFiles.addAll(unzip(baos.toByteArray()));
+                        @Override
-				} else {
+                        public String getFilename() {
-					unzippedFiles.add(fileResource);
+                            return file.getOriginalFilename();
-				}
+                        }
-			}
+                    };
-		}
+            outputFiles.add(fileResource);
+        }
+        logger.info("Files successfully loaded. Starting processing...");
+        return outputFiles;
+    }
 
-		logger.info("Unzipping completed. {} files were unzipped.", unzippedFiles.size());
+    private boolean isZip(byte[] data) {
-		return unzippedFiles;
+        if (data == null || data.length < 4) {
-	}
+            return false;
+        }
 
+        // Check the first four bytes of the data against the standard zip magic number
+        return data[0] == 0x50 && data[1] == 0x4B && data[2] == 0x03 && data[3] == 0x04;
+    }
+
+    private List<Resource> unzip(byte[] data) throws IOException {
+        logger.info("Unzipping data of length: {}", data.length);
+        List<Resource> unzippedFiles = new ArrayList<>();
+
+        try (ByteArrayInputStream bais = new ByteArrayInputStream(data);
+                ZipInputStream zis = new ZipInputStream(bais)) {
+
+            ZipEntry entry;
+            while ((entry = zis.getNextEntry()) != null) {
+                ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                byte[] buffer = new byte[1024];
+                int count;
+
+                while ((count = zis.read(buffer)) != -1) {
+                    baos.write(buffer, 0, count);
+                }
+
+                final String filename = entry.getName();
+                Resource fileResource =
+                        new ByteArrayResource(baos.toByteArray()) {
+                            @Override
+                            public String getFilename() {
+                                return filename;
+                            }
+                        };
+
+                // If the unzipped file is a zip file, unzip it
+                if (isZip(baos.toByteArray())) {
+                    logger.info("File {} is a zip file. Unzipping...", filename);
+                    unzippedFiles.addAll(unzip(baos.toByteArray()));
+                } else {
+                    unzippedFiles.add(fileResource);
+                }
+            }
+        }
+
+        logger.info("Unzipping completed. {} files were unzipped.", unzippedFiles.size());
+        return unzippedFiles;
+    }
 }