Update build.gradle

📝 Sync README
> Made via sync_files.yml

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

DeveloperGuide.md

@@ -11,7 +11,7 @@ Stirling-PDF is built using:
 - Spring Boot + Thymeleaf
 - PDFBox
 - LibreOffice
-- OcrMyPdf
+- qpdf
 - HTML, CSS, JavaScript
 - Docker
 - PDF.js
@@ -243,7 +243,7 @@ To run Stirling-PDF locally:
 
 Important notes:
 
-- Local testing doesn't include features that depend on external tools like OCRmyPDF, LibreOffice, or Python scripts.
+- Local testing doesn't include features that depend on external tools like qpdf, LibreOffice, or Python scripts.
 - There are currently no automated unit tests. All testing is done manually through the UI or API calls. (You are welcome to add JUnits!)
 - Always verify your changes in the full Docker environment before submitting pull requests, as some integrations and features will only work in the complete setup.
 

Dockerfile

@@ -30,6 +30,7 @@ RUN echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /et
         tini \
         bash \
         curl \
+        qpdf \
         shadow \
         su-exec \
         openssl \
@@ -40,7 +41,6 @@ RUN echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /et
 # pdftohtml
         poppler-utils \
 # OCR MY PDF (unpaper for descew and other advanced features)
-        ocrmypdf \
         tesseract-ocr-data-eng \
 # CV
         py3-opencv \

Dockerfile-fat

@@ -55,7 +55,7 @@ RUN echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /et
 # pdftohtml
         poppler-utils \
 # OCR MY PDF (unpaper for descew and other advanced featues)
-        ocrmypdf \
+        qpdf \
         tesseract-ocr-data-eng \
         font-terminus font-dejavu font-noto font-noto-cjk font-awesome font-noto-extra \
 # CV

Endpoint-groups.md

@@ -1,4 +1,4 @@
-| Operation           | PageOps | Convert | Security | Other | CLI | Python | OpenCV | LibreOffice | OCRmyPDF | Java | Javascript | Unoconv | Ghostscript |
+| Operation           | PageOps | Convert | Security | Other | CLI | Python | OpenCV | LibreOffice | qpdf | Java | Javascript | Unoconv | tesseract |
 | ------------------- | ------- | ------- | -------- | ----- | --- | ------ | ------ | ----------- | -------- | ---- | ---------- | ------- | ----------- |
 | adjust-contrast     | ✔️       |         |          |       |     |        |        |             |          |      | ✔️          |         |             |
 | auto-split-pdf      | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |         |             |
@@ -16,7 +16,7 @@
 | img-to-pdf          |         | ✔️       |          |       |     |        |        |             |          | ✔️    |            |         |             |
 | pdf-to-html         |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |         |             |
 | pdf-to-img          |         | ✔️       |          |       |     | ✔️      |        |             |          | ✔️    |            |         |             |
-| pdf-to-pdfa         |         | ✔️       |          |       | ✔️   |        |        |             | ✔️        |      |            |         | ✔️           |
+| pdf-to-pdfa         |         | ✔️       |          |       | ✔️   |        |        |             | ✔️        |      |            |         |            |
 | pdf-to-markdown     |         | ✔️       |          |       |     |        |        |             |          | ✔️    |            |         |             |
 | pdf-to-presentation |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |         |             |
 | pdf-to-text         |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |         |             |
@@ -34,13 +34,13 @@
 | auto-rename         |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |         |             |
 | change-metadata     |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |         |             |
 | compare             |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |         |             |
-| compress-pdf        |         |         |          | ✔️     | ✔️   |        |        |             | ✔️        |      |            |         | ✔️           |
+| compress-pdf        |         |         |          | ✔️     | ✔️   |        |        |             | ✔️        |      |            |         |            |
 | extract-image-scans |         |         |          | ✔️     | ✔️   | ✔️      | ✔️      |             |          |      |            |         |             |
 | extract-images      |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |         |             |
 | flatten             |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |         |             |
 | get-info-on-pdf     |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |         |             |
-| ocr-pdf             |         |         |          | ✔️     | ✔️   |        |        |             | ✔️        |      |            |         |             |
+| ocr-pdf             |         |         |          | ✔️     | ✔️   |        |        |             |         |      |            |         |    ✔        |
 | remove-blanks       |         |         |          | ✔️     | ✔️   | ✔️      | ✔️      |             |          |      |            |         |             |
-| repair              |         |         |          | ✔️     | ✔️   |        |        | ✔️           |          |      |            |         | ✔️           |
+| repair              |         |         |          | ✔️     | ✔️   |        |        | ✔️           |   ✔       |      |            |         |            |
 | show-javascript     |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |         |             |
 | sign                |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |         |             |

HowToUseOCR.md

@@ -8,7 +8,7 @@ The paths have changed for the tessdata locations on new Docker images. Please u
 
 ## How does the OCR Work
 
-Stirling-PDF uses [OCRmyPDF](https://github.com/ocrmypdf/OCRmyPDF), which in turn uses Tesseract for its text recognition. All credit goes to them for this awesome work!
+Stirling-PDF uses Tesseract for its text recognition. All credit goes to them for this awesome work!
 
 ## Language Packs
 
@@ -52,8 +52,6 @@ Add the following to your existing Docker run command:
 
 ### Non-Docker Setup
 
-If you are not using Docker, you need to install the OCR components, including the `ocrmypdf` app. You can see the [OCRmyPDF install guide](https://ocrmypdf.readthedocs.io/en/latest/installation.html).
-
 For Debian-based systems, install languages with this command:
 
 ```bash
@@ -83,8 +81,7 @@ rpm -qa | grep tesseract-langpack | sed 's/tesseract-langpack-//g'
 
 For Windows:
 
-Ensure ocrmypdf in installed with
-``pip install ocrmypdf``
+You must ensure tesseract is installed
 
 Additional languages must be downloaded manually:
 Download desired .traineddata files from tessdata or tessdata_fast

LocalRunGuide.md

@@ -68,7 +68,7 @@ nix-env -iA nixpkgs.jbig2enc
 
 ### Step 3: Install Additional Software
 
-Next we need to install LibreOffice for conversions, ocrmypdf for OCR, and OpenCV for pattern recognition functionality.
+Next we need to install LibreOffice for conversions, qpdf for OCR, and OpenCV for pattern recognition functionality.
 
 Install the following software:
 
@@ -81,27 +81,27 @@ Install the following software:
 - unoconv
 - pngquant
 - unpaper
-- ocrmypdf
+- qpdf
 - opencv-python-headless
 
 For Debian-based systems, you can use the following command:
 
 ```bash
-sudo apt-get install -y libreoffice-writer libreoffice-calc libreoffice-impress unpaper ocrmypdf
+sudo apt-get install -y libreoffice-writer libreoffice-calc libreoffice-impress unpaper qpdf
 pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint --break-system-packages
 ```
 
 For Fedora:
 
 ```bash
-sudo dnf install -y libreoffice-writer libreoffice-calc libreoffice-impress unpaper ocrmypdf
+sudo dnf install -y libreoffice-writer libreoffice-calc libreoffice-impress unpaper qpdf
 pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint
 ```
 
 For Nix:
 
 ```bash
-nix-env -iA nixpkgs.unpaper nixpkgs.libreoffice nixpkgs.ocrmypdf nixpkgs.poppler_utils
+nix-env -iA nixpkgs.unpaper nixpkgs.libreoffice nixpkgs.qpdf nixpkgs.poppler_utils
 pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint
 ```
 
@@ -146,7 +146,6 @@ The easiest method is to use the language packs provided by your repositories. S
 
 1. Download the desired language pack(s) by selecting the `.traineddata` file(s) for the language(s) you need.
 2. Place the `.traineddata` files in the Tesseract tessdata directory: `/usr/share/tessdata`
-3. Please view [OCRmyPDF install guide](https://ocrmypdf.readthedocs.io/en/latest/installation.html) for more info.
 
 **IMPORTANT:** DO NOT REMOVE EXISTING `eng.traineddata`, IT'S REQUIRED.
 

README.md

@@ -79,15 +79,15 @@ All files and PDFs exist either exclusively on the client side, reside in server
 - Detect and remove blank pages
 - Compare two PDFs and show differences in text
 - Add images to PDFs
-- Compress PDFs to decrease their filesize (using OCRMyPDF)
+- Compress PDFs to decrease their filesize (using qpdf)
 - Extract images from PDF
 - Remove images from PDF
 - Extract images from scans
 - Remove annotations
 - Add page numbers
 - Auto rename file by detecting PDF header text
-- OCR on PDF (using OCRMyPDF)
-- PDF/A conversion (using OCRMyPDF)
+- OCR on PDF (using tesseract)
+- PDF/A conversion (using libreoffice)
 - Edit metadata
 - Flatten PDFs
 - Get all information on a PDF to view or export as JSON
@@ -102,7 +102,7 @@ A demo of the app is available [here](https://stirlingpdf.io).
 - Spring Boot + Thymeleaf
 - [PDFBox](https://github.com/apache/pdfbox/tree/trunk)
 - [LibreOffice](https://www.libreoffice.org/discover/libreoffice/) for advanced conversions
-- [OcrMyPdf](https://github.com/ocrmypdf/OCRmyPDF)
+- [qpdf](https://github.com/qpdf/qpdf)
 - HTML, CSS, JavaScript
 - Docker
 - [PDF.js](https://github.com/mozilla/pdf.js)
@@ -191,43 +191,43 @@ Stirling-PDF currently supports 37 languages!
 
 | Language                                     | Progress                               |
 | -------------------------------------------- | -------------------------------------- |
-| Arabic (العربية) (ar_AR)                        | ![99%](https://geps.dev/progress/99)   |
-| Azerbaijani (Azərbaycan Dili) (az_AZ)        | ![76%](https://geps.dev/progress/76)   |
-| Basque (Euskara) (eu_ES)                     | ![54%](https://geps.dev/progress/54)   |
-| Bulgarian (Български) (bg_BG)                | ![95%](https://geps.dev/progress/95)   |
-| Catalan (Català) (ca_CA)                     | ![89%](https://geps.dev/progress/89)   |
-| Croatian (Hrvatski) (hr_HR)                  | ![96%](https://geps.dev/progress/96)   |
-| Czech (Česky) (cs_CZ)                        | ![96%](https://geps.dev/progress/96)   |
-| Danish (Dansk) (da_DK)                       | ![95%](https://geps.dev/progress/95)   |
-| Dutch (Nederlands) (nl_NL)                   | ![94%](https://geps.dev/progress/94)   |
+| Arabic (العربية) (ar_AR)                        | ![95%](https://geps.dev/progress/95)   |
+| Azerbaijani (Azərbaycan Dili) (az_AZ)        | ![93%](https://geps.dev/progress/93)   |
+| Basque (Euskara) (eu_ES)                     | ![52%](https://geps.dev/progress/52)   |
+| Bulgarian (Български) (bg_BG)                | ![90%](https://geps.dev/progress/90)   |
+| Catalan (Català) (ca_CA)                     | ![84%](https://geps.dev/progress/84)   |
+| Croatian (Hrvatski) (hr_HR)                  | ![92%](https://geps.dev/progress/92)   |
+| Czech (Česky) (cs_CZ)                        | ![91%](https://geps.dev/progress/91)   |
+| Danish (Dansk) (da_DK)                       | ![90%](https://geps.dev/progress/90)   |
+| Dutch (Nederlands) (nl_NL)                   | ![90%](https://geps.dev/progress/90)   |
 | English (English) (en_GB)                    | ![100%](https://geps.dev/progress/100) |
 | English (US) (en_US)                         | ![100%](https://geps.dev/progress/100) |
-| French (Français) (fr_FR)                    | ![98%](https://geps.dev/progress/98)   |
-| German (Deutsch) (de_DE)                     | ![98%](https://geps.dev/progress/98)   |
-| Greek (Ελληνικά) (el_GR)                     | ![96%](https://geps.dev/progress/96)   |
-| Hindi (हिंदी) (hi_IN)                          | ![93%](https://geps.dev/progress/93)   |
-| Hungarian (Magyar) (hu_HU)                   | ![96%](https://geps.dev/progress/96)   |
-| Indonesian (Bahasa Indonesia) (id_ID)        | ![96%](https://geps.dev/progress/96)   |
-| Irish (Gaeilge) (ga_IE)                      | ![86%](https://geps.dev/progress/86)   |
-| Italian (Italiano) (it_IT)                   | ![99%](https://geps.dev/progress/99)   |
-| Japanese (日本語) (ja_JP)                    | ![84%](https://geps.dev/progress/84)   |
-| Korean (한국어) (ko_KR)                      | ![94%](https://geps.dev/progress/94)   |
-| Norwegian (Norsk) (no_NB)                    | ![86%](https://geps.dev/progress/86)   |
-| Polish (Polski) (pl_PL)                      | ![95%](https://geps.dev/progress/95)   |
-| Portuguese (Português) (pt_PT)               | ![96%](https://geps.dev/progress/96)   |
-| Portuguese Brazilian (Português) (pt_BR)     | ![96%](https://geps.dev/progress/96)   |
-| Romanian (Română) (ro_RO)                    | ![89%](https://geps.dev/progress/89)   |
-| Russian (Русский) (ru_RU)                    | ![95%](https://geps.dev/progress/95)   |
-| Serbian Latin alphabet (Srpski) (sr_LATN_RS) | ![69%](https://geps.dev/progress/69)   |
-| Simplified Chinese (简体中文) (zh_CN)         | ![90%](https://geps.dev/progress/90)   |
-| Slovakian (Slovensky) (sk_SK)                | ![81%](https://geps.dev/progress/81)   |
-| Spanish (Español) (es_ES)                    | ![96%](https://geps.dev/progress/96)   |
-| Swedish (Svenska) (sv_SE)                    | ![95%](https://geps.dev/progress/95)   |
-| Thai (ไทย) (th_TH)                           | ![94%](https://geps.dev/progress/94)   |
-| Traditional Chinese (繁體中文) (zh_TW)        | ![97%](https://geps.dev/progress/97)   |
-| Turkish (Türkçe) (tr_TR)                     | ![90%](https://geps.dev/progress/90)   |
-| Ukrainian (Українська) (uk_UA)               | ![79%](https://geps.dev/progress/79)   |
-| Vietnamese (Tiếng Việt) (vi_VN)              | ![87%](https://geps.dev/progress/87)   |
+| French (Français) (fr_FR)                    | ![93%](https://geps.dev/progress/93)   |
+| German (Deutsch) (de_DE)                     | ![93%](https://geps.dev/progress/93)   |
+| Greek (Ελληνικά) (el_GR)                     | ![91%](https://geps.dev/progress/91)   |
+| Hindi (हिंदी) (hi_IN)                          | ![89%](https://geps.dev/progress/89)   |
+| Hungarian (Magyar) (hu_HU)                   | ![92%](https://geps.dev/progress/92)   |
+| Indonesian (Bahasa Indonesia) (id_ID)        | ![91%](https://geps.dev/progress/91)   |
+| Irish (Gaeilge) (ga_IE)                      | ![82%](https://geps.dev/progress/82)   |
+| Italian (Italiano) (it_IT)                   | ![95%](https://geps.dev/progress/95)   |
+| Japanese (日本語) (ja_JP)                    | ![80%](https://geps.dev/progress/80)   |
+| Korean (한국어) (ko_KR)                      | ![89%](https://geps.dev/progress/89)   |
+| Norwegian (Norsk) (no_NB)                    | ![82%](https://geps.dev/progress/82)   |
+| Polish (Polski) (pl_PL)                      | ![91%](https://geps.dev/progress/91)   |
+| Portuguese (Português) (pt_PT)               | ![91%](https://geps.dev/progress/91)   |
+| Portuguese Brazilian (Português) (pt_BR)     | ![92%](https://geps.dev/progress/92)   |
+| Romanian (Română) (ro_RO)                    | ![84%](https://geps.dev/progress/84)   |
+| Russian (Русский) (ru_RU)                    | ![91%](https://geps.dev/progress/91)   |
+| Serbian Latin alphabet (Srpski) (sr_LATN_RS) | ![66%](https://geps.dev/progress/66)   |
+| Simplified Chinese (简体中文) (zh_CN)         | ![85%](https://geps.dev/progress/85)   |
+| Slovakian (Slovensky) (sk_SK)                | ![77%](https://geps.dev/progress/77)   |
+| Spanish (Español) (es_ES)                    | ![92%](https://geps.dev/progress/92)   |
+| Swedish (Svenska) (sv_SE)                    | ![91%](https://geps.dev/progress/91)   |
+| Thai (ไทย) (th_TH)                           | ![90%](https://geps.dev/progress/90)   |
+| Traditional Chinese (繁體中文) (zh_TW)        | ![92%](https://geps.dev/progress/92)   |
+| Turkish (Türkçe) (tr_TR)                     | ![86%](https://geps.dev/progress/86)   |
+| Ukrainian (Українська) (uk_UA)               | ![75%](https://geps.dev/progress/75)   |
+| Vietnamese (Tiếng Việt) (vi_VN)              | ![83%](https://geps.dev/progress/83)   |
 
 ## Contributing (Creating Issues, Translations, Fixing Bugs, etc.)
 

Version-groups.md

@@ -8,7 +8,7 @@ The 'Fat' container contains all those found in 'Full' with security jar along w
 | Libre      |            |   ✔️   |
 | Python     |            |   ✔️   |
 | OpenCV     |            |   ✔️   |
-| OCRmyPDF   |            |   ✔️   |
+| qpdf   |            |   ✔️   |
 
 | Operation              | Ultra-Lite | Full |
 | ---------------------- | ---------- | ---- |

build.gradle

@@ -21,10 +21,13 @@ ext {
     imageioVersion = "3.12.0"
     lombokVersion = "1.18.36"
     bouncycastleVersion = "1.79"
+    springSecuritySamlVersion = "6.4.1"
+    openSamlVersion = "4.3.2"  
 }
 
 group = "stirling.software"
-version = "0.34.0"
+version = "0.36.0"
+
 
 java {
     // 17 is lowest but we support and recommend 21
@@ -143,17 +146,18 @@ dependencies {
         implementation "org.springframework.boot:spring-boot-starter-data-jpa:$springBootVersion"
         implementation "org.springframework.boot:spring-boot-starter-oauth2-client:$springBootVersion"
 
-		implementation 'org.springframework.security:spring-security-saml2-service-provider:6.4.1'
+		implementation "org.springframework.session:spring-session-core:$springBootVersion"
+				
 	    implementation 'com.unboundid.product.scim2:scim2-sdk-client:2.3.5'
         // Don't upgrade h2database
         runtimeOnly "com.h2database:h2:2.3.232"
         constraints {
-            implementation "org.opensaml:opensaml-core"
-            implementation "org.opensaml:opensaml-saml-api"
-            implementation "org.opensaml:opensaml-saml-impl"
+            implementation "org.opensaml:opensaml-core:$openSamlVersion"
+            implementation "org.opensaml:opensaml-saml-api:$openSamlVersion"
+            implementation "org.opensaml:opensaml-saml-impl:$openSamlVersion"
         }
-        implementation "org.springframework.security:spring-security-saml2-service-provider"
-
+        implementation "org.springframework.security:spring-security-saml2-service-provider:$springSecuritySamlVersion"
+//		implementation 'org.springframework.security:spring-security-core:$springSecuritySamlVersion'
         implementation 'com.coveo:saml-client:5.0.0'
 
 
@@ -185,7 +189,7 @@ dependencies {
     // Image metadata extractor
     implementation "com.drewnoakes:metadata-extractor:2.19.0"
 
-    implementation "commons-io:commons-io:2.17.0"
+    implementation "commons-io:commons-io:2.18.0"
     implementation "org.springdoc:springdoc-openapi-starter-webmvc-ui:2.2.0"
     //general PDF
 

cucumber/features/external.feature

@@ -48,24 +48,6 @@ Feature: API Validation
 	And the response status code should be 200
 	
 	
-	
-  @ocr @negative
-  Scenario: Process PDF with text and OCR with type normal 
-    Given I generate a PDF file as "fileInput"
-    And the pdf contains 3 pages with random text
-    And the request data includes
-      | parameter        | value       |
-      | languages        | eng         |
-      | sidecar          | false        |
-      | deskew           | true        |
-      | clean            | true        |
-      | cleanFinal       | true        |
-      | ocrType          | Normal      |
-      | ocrRenderType    | hocr        |
-      | removeImagesAfter| false       |
-    When I send the API request to the endpoint "/api/v1/misc/ocr-pdf"
-	Then the response status code should be 500
-	
   @ocr @positive
   Scenario: Process PDF with OCR
     Given I generate a PDF file as "fileInput"
@@ -83,26 +65,6 @@ Feature: API Validation
     Then the response content type should be "application/pdf"
     And the response file should have size greater than 0
 	And the response status code should be 200
-	
-  @ocr @positive
-  Scenario: Process PDF with OCR with sidecar
-    Given I generate a PDF file as "fileInput"
-    And the request data includes
-      | parameter        | value       |
-      | languages        | eng         |
-      | sidecar          | true        |
-      | deskew           | true        |
-      | clean            | true        |
-      | cleanFinal       | true        |
-      | ocrType          | Force      |
-      | ocrRenderType    | hocr        |
-      | removeImagesAfter| false       |
-    When I send the API request to the endpoint "/api/v1/misc/ocr-pdf"
-    Then the response content type should be "application/octet-stream"
-	And the response file should have extension ".zip"
-	And the response ZIP should contain 2 files
-    And the response file should have size greater than 0
-	And the response status code should be 200
 
 
   @libre @positive
@@ -145,7 +107,7 @@ Feature: API Validation
     And the response file should have extension ".pdf"
     And the response file should have size greater than 100
 	
-  @compress @ghostscript @positive
+  @compress @qpdf @positive
   Scenario: Compress
     Given I use an example file at "exampleFiles/ghost3.pdf" as parameter "fileInput"
 	And the request data includes
@@ -156,7 +118,7 @@ Feature: API Validation
     And the response file should have extension ".pdf"
     And the response file should have size greater than 100
 	
-  @compress @ghostscript @positive
+  @compress @qpdf @positive
   Scenario: Compress
     Given I use an example file at "exampleFiles/ghost2.pdf" as parameter "fileInput"
 	And the request data includes
@@ -169,7 +131,7 @@ Feature: API Validation
     And the response file should have size greater than 100
 	
 	
-  @compress @ghostscript @positive
+  @compress @qpdf @positive
   Scenario: Compress
     Given I use an example file at "exampleFiles/ghost1.pdf" as parameter "fileInput"
 	And the request data includes

scripts/replace_translation_line.sh

@@ -1,8 +1,8 @@
 #!/bin/bash
 
 translation_key="pdfToPDFA.credit"
-old_value="OCRmyPDF"
-new_value="ghostscript"
+old_value="qpdf"
+new_value="liibreoffice"
 
 for file in ../src/main/resources/messages_*.properties; do
   sed -i "/^$translation_key=/s/$old_value/$new_value/" "$file"

src/main/java/stirling/software/SPDF/EE/EEAppConfig.java

@@ -3,13 +3,14 @@ package stirling.software.SPDF.EE;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Lazy;
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
 
 import lombok.extern.slf4j.Slf4j;
 import stirling.software.SPDF.model.ApplicationProperties;
 
 @Configuration
-@Lazy
+@Order(Ordered.HIGHEST_PRECEDENCE)
 @Slf4j
 public class EEAppConfig {
 

src/main/java/stirling/software/SPDF/EE/LicenseKeyChecker.java

@@ -25,9 +25,10 @@ public class LicenseKeyChecker {
             KeygenLicenseVerifier licenseService, ApplicationProperties applicationProperties) {
         this.licenseService = licenseService;
         this.applicationProperties = applicationProperties;
+        this.checkLicense();
     }
 
-    @Scheduled(fixedRate = 604800000, initialDelay = 1000) // 7 days in milliseconds
+    @Scheduled(fixedRate = 604800000) // 7 days in milliseconds
     public void checkLicensePeriodically() {
         checkLicense();
     }

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

@@ -188,7 +188,7 @@ public class EndpointConfiguration {
         addEndpointToGroup("OpenCV", "extract-image-scans");
 
         // LibreOffice
-        addEndpointToGroup("LibreOffice", "repair");
+        addEndpointToGroup("qpdf", "repair");
         addEndpointToGroup("LibreOffice", "file-to-pdf");
         addEndpointToGroup("LibreOffice", "pdf-to-word");
         addEndpointToGroup("LibreOffice", "pdf-to-presentation");
@@ -199,10 +199,11 @@ public class EndpointConfiguration {
         // Unoconv
         addEndpointToGroup("Unoconv", "file-to-pdf");
 
-        // OCRmyPDF
-        addEndpointToGroup("OCRmyPDF", "compress-pdf");
-        addEndpointToGroup("OCRmyPDF", "pdf-to-pdfa");
-        addEndpointToGroup("OCRmyPDF", "ocr-pdf");
+        // qpdf
+        addEndpointToGroup("qpdf", "compress-pdf");
+        addEndpointToGroup("qpdf", "pdf-to-pdfa");
+
+        addEndpointToGroup("tesseract", "ocr-pdf");
 
         // Java
         addEndpointToGroup("Java", "merge-pdfs");
@@ -248,10 +249,10 @@ public class EndpointConfiguration {
         addEndpointToGroup("Javascript", "compare");
         addEndpointToGroup("Javascript", "adjust-contrast");
 
-        // Ghostscript dependent endpoints
-        addEndpointToGroup("Ghostscript", "compress-pdf");
-        addEndpointToGroup("Ghostscript", "pdf-to-pdfa");
-        addEndpointToGroup("Ghostscript", "repair");
+        // qpdf dependent endpoints
+        addEndpointToGroup("qpdf", "compress-pdf");
+        addEndpointToGroup("qpdf", "pdf-to-pdfa");
+        addEndpointToGroup("qpdf", "repair");
 
         // Weasyprint dependent endpoints
         addEndpointToGroup("Weasyprint", "html-to-pdf");

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

@@ -37,12 +37,12 @@ public class ExternalAppDepConfig {
     private final Map<String, List<String>> commandToGroupMapping =
             new HashMap<>() {
                 {
-                    put("gs", List.of("Ghostscript"));
                     put("soffice", List.of("LibreOffice"));
-                    put("ocrmypdf", List.of("OCRmyPDF"));
                     put("weasyprint", List.of("Weasyprint"));
                     put("pdftohtml", List.of("Pdftohtml"));
                     put("unoconv", List.of("Unoconv"));
+                    put("qpdf", List.of("qpdf"));
+                    put("tesseract", List.of("tesseract"));
                 }
             };
 
@@ -97,9 +97,9 @@ public class ExternalAppDepConfig {
     public void checkDependencies() {
 
         // Check core dependencies
-        checkDependencyAndDisableGroup("gs");
+        checkDependencyAndDisableGroup("tesseract");
         checkDependencyAndDisableGroup("soffice");
-        checkDependencyAndDisableGroup("ocrmypdf");
+        checkDependencyAndDisableGroup("qpdf");
         checkDependencyAndDisableGroup("weasyprint");
         checkDependencyAndDisableGroup("pdftohtml");
         checkDependencyAndDisableGroup("unoconv");

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

@@ -30,6 +30,7 @@ public class InitialSecuritySetup {
             initializeAdminUser();
         } else {
             databaseBackupHelper.exportDatabase();
+            userService.migrateOauth2ToSSO();
         }
         initializeInternalApiUser();
     }

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

@@ -3,14 +3,16 @@ package stirling.software.SPDF.config.security;
 import java.security.cert.X509Certificate;
 import java.util.*;
 
+import org.opensaml.saml.saml2.core.AuthnRequest;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.DependsOn;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.core.io.Resource;
-import org.springframework.security.authentication.AuthenticationProvider;
+import org.springframework.security.authentication.ProviderManager;
 import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
 import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
@@ -32,7 +34,8 @@ import org.springframework.security.saml2.provider.service.authentication.OpenSa
 import org.springframework.security.saml2.provider.service.registration.InMemoryRelyingPartyRegistrationRepository;
 import org.springframework.security.saml2.provider.service.registration.RelyingPartyRegistration;
 import org.springframework.security.saml2.provider.service.registration.RelyingPartyRegistrationRepository;
-import org.springframework.security.saml2.provider.service.web.authentication.Saml2WebSsoAuthenticationFilter;
+import org.springframework.security.saml2.provider.service.registration.Saml2MessageBinding;
+import org.springframework.security.saml2.provider.service.web.authentication.OpenSaml4AuthenticationRequestResolver;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 import org.springframework.security.web.authentication.rememberme.PersistentTokenRepository;
@@ -41,6 +44,7 @@ import org.springframework.security.web.csrf.CsrfTokenRequestAttributeHandler;
 import org.springframework.security.web.savedrequest.NullRequestCache;
 import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 
+import jakarta.servlet.http.HttpServletRequest;
 import lombok.extern.slf4j.Slf4j;
 import stirling.software.SPDF.config.security.oauth2.CustomOAuth2AuthenticationFailureHandler;
 import stirling.software.SPDF.config.security.oauth2.CustomOAuth2AuthenticationSuccessHandler;
@@ -64,6 +68,7 @@ import stirling.software.SPDF.repository.JPATokenRepositoryImpl;
 @EnableWebSecurity
 @EnableMethodSecurity
 @Slf4j
+@DependsOn("runningEE")
 public class SecurityConfiguration {
 
     @Autowired private CustomUserDetailsService userDetailsService;
@@ -79,6 +84,10 @@ public class SecurityConfiguration {
     @Qualifier("loginEnabled")
     public boolean loginEnabledValue;
 
+    @Autowired
+    @Qualifier("runningEE")
+    public boolean runningEE;
+
     @Autowired ApplicationProperties applicationProperties;
 
     @Autowired private UserAuthenticationFilter userAuthenticationFilter;
@@ -90,13 +99,14 @@ public class SecurityConfiguration {
 
     @Bean
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+        if (applicationProperties.getSecurity().getCsrfDisabled()) {
+            http.csrf(csrf -> csrf.disable());
+        }
 
         if (loginEnabledValue) {
             http.addFilterBefore(
                     userAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);
-            if (applicationProperties.getSecurity().getCsrfDisabled()) {
-                http.csrf(csrf -> csrf.disable());
-            } else {
+            if (!applicationProperties.getSecurity().getCsrfDisabled()) {
                 CookieCsrfTokenRepository cookieRepo =
                         CookieCsrfTokenRepository.withHttpOnlyFalse();
                 CsrfTokenRequestAttributeHandler requestHandler =
@@ -245,12 +255,22 @@ public class SecurityConfiguration {
             }
 
             // Handle SAML
-            if (applicationProperties.getSecurity().isSaml2Activ()
-                    && applicationProperties.getSystem().getEnableAlphaFunctionality()) {
-                http.authenticationProvider(samlAuthenticationProvider());
-                http.saml2Login(
-                                saml2 ->
+            if (applicationProperties.getSecurity().isSaml2Activ()) { // && runningEE
+                // Configure the authentication provider
+                OpenSaml4AuthenticationProvider authenticationProvider =
+                        new OpenSaml4AuthenticationProvider();
+                authenticationProvider.setResponseAuthenticationConverter(
+                        new CustomSaml2ResponseAuthenticationConverter(userService));
+
+                http.authenticationProvider(authenticationProvider)
+                        .saml2Login(
+                                saml2 -> {
+                                    try {
                                         saml2.loginPage("/saml2")
+                                                .relyingPartyRegistrationRepository(
+                                                        relyingPartyRegistrations())
+                                                .authenticationManager(
+                                                        new ProviderManager(authenticationProvider))
                                                 .successHandler(
                                                         new CustomSaml2AuthenticationSuccessHandler(
                                                                 loginAttemptService,
@@ -258,14 +278,18 @@ public class SecurityConfiguration {
                                                                 userService))
                                                 .failureHandler(
                                                         new CustomSaml2AuthenticationFailureHandler())
-                                                .permitAll())
-                        .addFilterBefore(
-                                userAuthenticationFilter, Saml2WebSsoAuthenticationFilter.class);
+                                                .authenticationRequestResolver(
+                                                        authenticationRequestResolver(
+                                                                relyingPartyRegistrations()));
+                                    } catch (Exception e) {
+                                        log.error("Error configuring SAML2 login", e);
+                                        throw new RuntimeException(e);
+                                    }
+                                });
             }
+
         } else {
-            if (applicationProperties.getSecurity().getCsrfDisabled()) {
-                http.csrf(csrf -> csrf.disable());
-            } else {
+            if (!applicationProperties.getSecurity().getCsrfDisabled()) {
                 CookieCsrfTokenRepository cookieRepo =
                         CookieCsrfTokenRepository.withHttpOnlyFalse();
                 CsrfTokenRequestAttributeHandler requestHandler =
@@ -282,20 +306,6 @@ public class SecurityConfiguration {
         return http.build();
     }
 
-    @Bean
-    @ConditionalOnProperty(
-            name = "security.saml2.enabled",
-            havingValue = "true",
-            matchIfMissing = false)
-    public AuthenticationProvider samlAuthenticationProvider() {
-        OpenSaml4AuthenticationProvider authenticationProvider =
-                new OpenSaml4AuthenticationProvider();
-        authenticationProvider.setResponseAuthenticationConverter(
-                new CustomSaml2ResponseAuthenticationConverter(userService));
-        return authenticationProvider;
-    }
-
-    // Client Registration Repository for OAUTH2 OIDC Login
     @Bean
     @ConditionalOnProperty(
             value = "security.oauth2.enabled",
@@ -432,11 +442,12 @@ public class SecurityConfiguration {
             havingValue = "true",
             matchIfMissing = false)
     public RelyingPartyRegistrationRepository relyingPartyRegistrations() throws Exception {
-
         SAML2 samlConf = applicationProperties.getSecurity().getSaml2();
 
-        Resource privateKeyResource = samlConf.getPrivateKey();
+        X509Certificate idpCert = CertificateUtils.readCertificate(samlConf.getidpCert());
+        Saml2X509Credential verificationCredential = Saml2X509Credential.verification(idpCert);
 
+        Resource privateKeyResource = samlConf.getPrivateKey();
         Resource certificateResource = samlConf.getSpCert();
 
         Saml2X509Credential signingCredential =
@@ -445,26 +456,97 @@ public class SecurityConfiguration {
                         CertificateUtils.readCertificate(certificateResource),
                         Saml2X509CredentialType.SIGNING);
 
-        X509Certificate idpCert = CertificateUtils.readCertificate(samlConf.getidpCert());
-
-        Saml2X509Credential verificationCredential = Saml2X509Credential.verification(idpCert);
-
         RelyingPartyRegistration rp =
                 RelyingPartyRegistration.withRegistrationId(samlConf.getRegistrationId())
-                        .signingX509Credentials((c) -> c.add(signingCredential))
+                        .signingX509Credentials(c -> c.add(signingCredential))
                         .assertingPartyMetadata(
-                                (details) ->
-                                        details.entityId(samlConf.getIdpIssuer())
+                                metadata ->
+                                        metadata.entityId(samlConf.getIdpIssuer())
                                                 .singleSignOnServiceLocation(
                                                         samlConf.getIdpSingleLoginUrl())
                                                 .verificationX509Credentials(
-                                                        (c) -> c.add(verificationCredential))
+                                                        c -> c.add(verificationCredential))
+                                                .singleSignOnServiceBinding(
+                                                        Saml2MessageBinding.POST)
                                                 .wantAuthnRequestsSigned(true))
                         .build();
+
         return new InMemoryRelyingPartyRegistrationRepository(rp);
     }
 
     @Bean
+    @ConditionalOnProperty(
+            name = "security.saml2.enabled",
+            havingValue = "true",
+            matchIfMissing = false)
+    public OpenSaml4AuthenticationRequestResolver authenticationRequestResolver(
+            RelyingPartyRegistrationRepository relyingPartyRegistrationRepository) {
+        OpenSaml4AuthenticationRequestResolver resolver =
+                new OpenSaml4AuthenticationRequestResolver(relyingPartyRegistrationRepository);
+        resolver.setAuthnRequestCustomizer(
+                customizer -> {
+                    log.debug("Customizing SAML Authentication request");
+
+                    AuthnRequest authnRequest = customizer.getAuthnRequest();
+                    log.debug("AuthnRequest ID: {}", authnRequest.getID());
+
+                    if (authnRequest.getID() == null) {
+                        authnRequest.setID("ARQ" + UUID.randomUUID().toString());
+                    }
+                    log.debug("AuthnRequest new ID after set: {}", authnRequest.getID());
+                    log.debug("AuthnRequest IssueInstant: {}", authnRequest.getIssueInstant());
+                    log.debug(
+                            "AuthnRequest Issuer: {}",
+                            authnRequest.getIssuer() != null
+                                    ? authnRequest.getIssuer().getValue()
+                                    : "null");
+
+                    HttpServletRequest request = customizer.getRequest();
+
+                    // Log HTTP request details
+                    log.debug("HTTP Request Method: {}", request.getMethod());
+                    log.debug("Request URI: {}", request.getRequestURI());
+                    log.debug("Request URL: {}", request.getRequestURL().toString());
+                    log.debug("Query String: {}", request.getQueryString());
+                    log.debug("Remote Address: {}", request.getRemoteAddr());
+
+                    // Log headers
+                    Collections.list(request.getHeaderNames())
+                            .forEach(
+                                    headerName -> {
+                                        log.debug(
+                                                "Header - {}: {}",
+                                                headerName,
+                                                request.getHeader(headerName));
+                                    });
+
+                    // Log SAML specific parameters
+                    log.debug("SAML Request Parameters:");
+                    log.debug("SAMLRequest: {}", request.getParameter("SAMLRequest"));
+                    log.debug("RelayState: {}", request.getParameter("RelayState"));
+
+                    // Log session debugrmation if exists
+                    if (request.getSession(false) != null) {
+                        log.debug("Session ID: {}", request.getSession().getId());
+                    }
+
+                    // Log any assertions consumer service details if present
+                    if (authnRequest.getAssertionConsumerServiceURL() != null) {
+                        log.debug(
+                                "AssertionConsumerServiceURL: {}",
+                                authnRequest.getAssertionConsumerServiceURL());
+                    }
+
+                    // Log NameID policy if present
+                    if (authnRequest.getNameIDPolicy() != null) {
+                        log.debug(
+                                "NameIDPolicy Format: {}",
+                                authnRequest.getNameIDPolicy().getFormat());
+                    }
+                });
+        return resolver;
+    }
+
     public DaoAuthenticationProvider daoAuthenticationProvider() {
         DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
         provider.setUserDetailsService(userDetailsService);

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

@@ -18,6 +18,7 @@ import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.security.oauth2.core.user.OAuth2User;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import lombok.extern.slf4j.Slf4j;
 import stirling.software.SPDF.config.interfaces.DatabaseBackupInterface;
@@ -50,8 +51,19 @@ public class UserService implements UserServiceInterface {
 
     @Autowired ApplicationProperties applicationProperties;
 
+    @Transactional
+    public void migrateOauth2ToSSO() {
+        userRepository
+                .findByAuthenticationTypeIgnoreCase("OAUTH2")
+                .forEach(
+                        user -> {
+                            user.setAuthenticationType(AuthenticationType.SSO);
+                            userRepository.save(user);
+                        });
+    }
+
     // Handle OAUTH2 login and user auto creation.
-    public boolean processOAuth2PostLogin(String username, boolean autoCreateUser)
+    public boolean processSSOPostLogin(String username, boolean autoCreateUser)
             throws IllegalArgumentException, IOException {
         if (!isUsernameValid(username)) {
             return false;
@@ -61,7 +73,7 @@ public class UserService implements UserServiceInterface {
             return true;
         }
         if (autoCreateUser) {
-            saveUser(username, AuthenticationType.OAUTH2);
+            saveUser(username, AuthenticationType.SSO);
             return true;
         }
         return false;

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuth2AuthenticationSuccessHandler.java

@@ -82,8 +82,7 @@ public class CustomOAuth2AuthenticationSuccessHandler
             }
             if (userService.usernameExistsIgnoreCase(username)
                     && userService.hasPassword(username)
-                    && !userService.isAuthenticationTypeByUsername(
-                            username, AuthenticationType.OAUTH2)
+                    && !userService.isAuthenticationTypeByUsername(username, AuthenticationType.SSO)
                     && oAuth.getAutoCreateUser()) {
                 response.sendRedirect(contextPath + "/logout?oauth2AuthenticationErrorWeb=true");
                 return;
@@ -95,7 +94,7 @@ public class CustomOAuth2AuthenticationSuccessHandler
                     return;
                 }
                 if (principal instanceof OAuth2User) {
-                    userService.processOAuth2PostLogin(username, oAuth.getAutoCreateUser());
+                    userService.processSSOPostLogin(username, oAuth.getAutoCreateUser());
                 }
                 response.sendRedirect(contextPath + "/");
                 return;

src/main/java/stirling/software/SPDF/config/security/saml2/CertificateUtils.java

@@ -3,12 +3,14 @@ package stirling.software.SPDF.config.security.saml2;
 import java.io.ByteArrayInputStream;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
-import java.security.KeyFactory;
 import java.security.cert.CertificateFactory;
 import java.security.cert.X509Certificate;
 import java.security.interfaces.RSAPrivateKey;
-import java.security.spec.PKCS8EncodedKeySpec;
 
+import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
+import org.bouncycastle.openssl.PEMKeyPair;
+import org.bouncycastle.openssl.PEMParser;
+import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
 import org.bouncycastle.util.io.pem.PemObject;
 import org.bouncycastle.util.io.pem.PemReader;
 import org.springframework.core.io.Resource;
@@ -28,15 +30,26 @@ public class CertificateUtils {
     }
 
     public static RSAPrivateKey readPrivateKey(Resource privateKeyResource) throws Exception {
-        try (PemReader pemReader =
-                new PemReader(
+        try (PEMParser pemParser =
+                new PEMParser(
                         new InputStreamReader(
                                 privateKeyResource.getInputStream(), StandardCharsets.UTF_8))) {
-            PemObject pemObject = pemReader.readPemObject();
-            byte[] decodedKey = pemObject.getContent();
-            return (RSAPrivateKey)
-                    KeyFactory.getInstance("RSA")
-                            .generatePrivate(new PKCS8EncodedKeySpec(decodedKey));
+
+            Object object = pemParser.readObject();
+            JcaPEMKeyConverter converter = new JcaPEMKeyConverter();
+
+            if (object instanceof PEMKeyPair) {
+                // Handle traditional RSA private key format
+                PEMKeyPair keypair = (PEMKeyPair) object;
+                return (RSAPrivateKey) converter.getPrivateKey(keypair.getPrivateKeyInfo());
+            } else if (object instanceof PrivateKeyInfo) {
+                // Handle PKCS#8 format
+                return (RSAPrivateKey) converter.getPrivateKey((PrivateKeyInfo) object);
+            } else {
+                throw new IllegalArgumentException(
+                        "Unsupported key format: "
+                                + (object != null ? object.getClass().getName() : "null"));
+            }
         }
     }
 }

src/main/java/stirling/software/SPDF/config/security/saml2/CustomSaml2AuthenticationSuccessHandler.java

@@ -12,6 +12,7 @@ import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import jakarta.servlet.http.HttpSession;
 import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import stirling.software.SPDF.config.security.LoginAttemptService;
 import stirling.software.SPDF.config.security.UserService;
 import stirling.software.SPDF.model.ApplicationProperties;
@@ -20,11 +21,11 @@ import stirling.software.SPDF.model.AuthenticationType;
 import stirling.software.SPDF.utils.RequestUriUtils;
 
 @AllArgsConstructor
+@Slf4j
 public class CustomSaml2AuthenticationSuccessHandler
         extends SavedRequestAwareAuthenticationSuccessHandler {
 
     private LoginAttemptService loginAttemptService;
-
     private ApplicationProperties applicationProperties;
     private UserService userService;
 
@@ -34,10 +35,12 @@ public class CustomSaml2AuthenticationSuccessHandler
             throws ServletException, IOException {
 
         Object principal = authentication.getPrincipal();
+        log.debug("Starting SAML2 authentication success handling");
 
         if (principal instanceof CustomSaml2AuthenticatedPrincipal) {
             String username = ((CustomSaml2AuthenticatedPrincipal) principal).getName();
-            // Get the saved request
+            log.debug("Authenticated principal found for user: {}", username);
+
             HttpSession session = request.getSession(false);
             String contextPath = request.getContextPath();
             SavedRequest savedRequest =
@@ -45,46 +48,77 @@ public class CustomSaml2AuthenticationSuccessHandler
                             ? (SavedRequest) session.getAttribute("SPRING_SECURITY_SAVED_REQUEST")
                             : null;
 
+            log.debug(
+                    "Session exists: {}, Saved request exists: {}",
+                    session != null,
+                    savedRequest != null);
+
             if (savedRequest != null
                     && !RequestUriUtils.isStaticResource(
                             contextPath, savedRequest.getRedirectUrl())) {
-                // Redirect to the original destination
+                log.debug(
+                        "Valid saved request found, redirecting to original destination: {}",
+                        savedRequest.getRedirectUrl());
                 super.onAuthenticationSuccess(request, response, authentication);
             } else {
                 SAML2 saml2 = applicationProperties.getSecurity().getSaml2();
+                log.debug(
+                        "Processing SAML2 authentication with autoCreateUser: {}",
+                        saml2.getAutoCreateUser());
 
                 if (loginAttemptService.isBlocked(username)) {
+                    log.debug("User {} is blocked due to too many login attempts", username);
                     if (session != null) {
                         session.removeAttribute("SPRING_SECURITY_SAVED_REQUEST");
                     }
                     throw new LockedException(
                             "Your account has been locked due to too many failed login attempts.");
                 }
-                if (userService.usernameExistsIgnoreCase(username)
-                        && userService.hasPassword(username)
-                        && !userService.isAuthenticationTypeByUsername(
-                                username, AuthenticationType.OAUTH2)
-                        && saml2.getAutoCreateUser()) {
+
+                boolean userExists = userService.usernameExistsIgnoreCase(username);
+                boolean hasPassword = userExists && userService.hasPassword(username);
+                boolean isSSOUser =
+                        userExists
+                                && userService.isAuthenticationTypeByUsername(
+                                        username, AuthenticationType.SSO);
+
+                log.debug(
+                        "User status - Exists: {}, Has password: {}, Is SSO user: {}",
+                        userExists,
+                        hasPassword,
+                        isSSOUser);
+
+                if (userExists && hasPassword && !isSSOUser && saml2.getAutoCreateUser()) {
+                    log.debug(
+                            "User {} exists with password but is not SSO user, redirecting to logout",
+                            username);
                     response.sendRedirect(
                             contextPath + "/logout?oauth2AuthenticationErrorWeb=true");
                     return;
                 }
+
                 try {
-                    if (saml2.getBlockRegistration()
-                            && !userService.usernameExistsIgnoreCase(username)) {
+                    if (saml2.getBlockRegistration() && !userExists) {
+                        log.debug("Registration blocked for new user: {}", username);
                         response.sendRedirect(
                                 contextPath + "/login?erroroauth=oauth2_admin_blocked_user");
                         return;
                     }
-                    userService.processOAuth2PostLogin(username, saml2.getAutoCreateUser());
+                    log.debug("Processing SSO post-login for user: {}", username);
+                    userService.processSSOPostLogin(username, saml2.getAutoCreateUser());
+                    log.debug("Successfully processed authentication for user: {}", username);
                     response.sendRedirect(contextPath + "/");
                     return;
                 } catch (IllegalArgumentException e) {
+                    log.debug(
+                            "Invalid username detected for user: {}, redirecting to logout",
+                            username);
                     response.sendRedirect(contextPath + "/logout?invalidUsername=true");
                     return;
                 }
             }
         } else {
+            log.debug("Non-SAML2 principal detected, delegating to parent handler");
             super.onAuthenticationSuccess(request, response, authentication);
         }
     }

src/main/java/stirling/software/SPDF/config/security/saml2/CustomSaml2ResponseAuthenticationConverter.java

@@ -3,8 +3,6 @@ package stirling.software.SPDF.config.security.saml2;
 import java.util.*;
 
 import org.opensaml.core.xml.XMLObject;
-import org.opensaml.core.xml.schema.XSBoolean;
-import org.opensaml.core.xml.schema.XSString;
 import org.opensaml.saml.saml2.core.Assertion;
 import org.opensaml.saml.saml2.core.Attribute;
 import org.opensaml.saml.saml2.core.AttributeStatement;
@@ -30,15 +28,60 @@ public class CustomSaml2ResponseAuthenticationConverter
         this.userService = userService;
     }
 
+    private Map<String, List<Object>> extractAttributes(Assertion assertion) {
+        Map<String, List<Object>> attributes = new HashMap<>();
+
+        for (AttributeStatement attributeStatement : assertion.getAttributeStatements()) {
+            for (Attribute attribute : attributeStatement.getAttributes()) {
+                String attributeName = attribute.getName();
+                List<Object> values = new ArrayList<>();
+
+                for (XMLObject xmlObject : attribute.getAttributeValues()) {
+                    // Get the text content directly
+                    String value = xmlObject.getDOM().getTextContent();
+                    if (value != null && !value.trim().isEmpty()) {
+                        values.add(value);
+                    }
+                }
+
+                if (!values.isEmpty()) {
+                    // Store with both full URI and last part of the URI
+                    attributes.put(attributeName, values);
+                    String shortName = attributeName.substring(attributeName.lastIndexOf('/') + 1);
+                    attributes.put(shortName, values);
+                }
+            }
+        }
+
+        return attributes;
+    }
+
     @Override
     public Saml2Authentication convert(ResponseToken responseToken) {
-        // Extract the assertion from the response
         Assertion assertion = responseToken.getResponse().getAssertions().get(0);
+        Map<String, List<Object>> attributes = extractAttributes(assertion);
 
-        // Extract the NameID
-        String nameId = assertion.getSubject().getNameID().getValue();
+        // Debug log with actual values
+        log.debug("Extracted SAML Attributes: " + attributes);
 
-        Optional<User> userOpt = userService.findByUsernameIgnoreCase(nameId);
+        // Try to get username/identifier in order of preference
+        String userIdentifier = null;
+        if (hasAttribute(attributes, "username")) {
+            userIdentifier = getFirstAttributeValue(attributes, "username");
+        } else if (hasAttribute(attributes, "emailaddress")) {
+            userIdentifier = getFirstAttributeValue(attributes, "emailaddress");
+        } else if (hasAttribute(attributes, "name")) {
+            userIdentifier = getFirstAttributeValue(attributes, "name");
+        } else if (hasAttribute(attributes, "upn")) {
+            userIdentifier = getFirstAttributeValue(attributes, "upn");
+        } else if (hasAttribute(attributes, "uid")) {
+            userIdentifier = getFirstAttributeValue(attributes, "uid");
+        } else {
+            userIdentifier = assertion.getSubject().getNameID().getValue();
+        }
+
+        // Rest of your existing code...
+        Optional<User> userOpt = userService.findByUsernameIgnoreCase(userIdentifier);
         SimpleGrantedAuthority simpleGrantedAuthority = new SimpleGrantedAuthority("ROLE_USER");
         if (userOpt.isPresent()) {
             User user = userOpt.get();
@@ -48,39 +91,27 @@ public class CustomSaml2ResponseAuthenticationConverter
             }
         }
 
-        // Extract the SessionIndexes
         List<String> sessionIndexes = new ArrayList<>();
         for (AuthnStatement authnStatement : assertion.getAuthnStatements()) {
             sessionIndexes.add(authnStatement.getSessionIndex());
         }
 
-        // Extract the Attributes
-        Map<String, List<Object>> attributes = extractAttributes(assertion);
-
-        // Create the custom principal
         CustomSaml2AuthenticatedPrincipal principal =
-                new CustomSaml2AuthenticatedPrincipal(nameId, attributes, nameId, sessionIndexes);
+                new CustomSaml2AuthenticatedPrincipal(
+                        userIdentifier, attributes, userIdentifier, sessionIndexes);
 
-        // Create the Saml2Authentication
         return new Saml2Authentication(
                 principal,
                 responseToken.getToken().getSaml2Response(),
                 Collections.singletonList(simpleGrantedAuthority));
     }
 
-    private Map<String, List<Object>> extractAttributes(Assertion assertion) {
-        Map<String, List<Object>> attributes = new HashMap<>();
-        for (AttributeStatement attributeStatement : assertion.getAttributeStatements()) {
-            for (Attribute attribute : attributeStatement.getAttributes()) {
-                String attributeName = attribute.getName();
-                List<Object> values = new ArrayList<>();
-                for (XMLObject xmlObject : attribute.getAttributeValues()) {
-                    log.info("BOOL: " + ((XSBoolean) xmlObject).getValue());
-                    values.add(((XSString) xmlObject).getValue());
-                }
-                attributes.put(attributeName, values);
-            }
-        }
-        return attributes;
+    private boolean hasAttribute(Map<String, List<Object>> attributes, String name) {
+        return attributes.containsKey(name) && !attributes.get(name).isEmpty();
+    }
+
+    private String getFirstAttributeValue(Map<String, List<Object>> attributes, String name) {
+        List<Object> values = attributes.get(name);
+        return values != null && !values.isEmpty() ? values.get(0).toString() : null;
     }
 }

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

@@ -244,8 +244,8 @@ public class UserController {
             return new RedirectView("/addUsers?messageType=invalidRole", true);
         }
 
-        if (authType.equalsIgnoreCase(AuthenticationType.OAUTH2.toString())) {
-            userService.saveUser(username, AuthenticationType.OAUTH2, role);
+        if (authType.equalsIgnoreCase(AuthenticationType.SSO.toString())) {
+            userService.saveUser(username, AuthenticationType.SSO, role);
         } else {
             if (password.isBlank()) {
                 return new RedirectView("/addUsers?messageType=invalidPassword", true);

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

@@ -1,12 +1,13 @@
 package stirling.software.SPDF.controller.api.converters;
 
-import java.io.FileOutputStream;
-import java.io.OutputStream;
+import java.io.File;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
+import org.apache.commons.io.FileUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.MediaType;
@@ -37,59 +38,90 @@ public class ConvertPDFToPDFA {
     @Operation(
             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")
+                    "This endpoint converts a PDF file to a PDF/A file using LibreOffice. PDF/A is a format designed for long-term archiving of digital documents. Input:PDF Output:PDF Type:SISO")
     public ResponseEntity<byte[]> pdfToPdfA(@ModelAttribute PdfToPdfARequest request)
             throws Exception {
         MultipartFile inputFile = request.getFileInput();
         String outputFormat = request.getOutputFormat();
 
-        // Convert MultipartFile to byte[]
-        byte[] pdfBytes = inputFile.getBytes();
-
-        // Save the uploaded file to a temporary location
-        Path tempInputFile = Files.createTempFile("input_", ".pdf");
-        try (OutputStream outputStream = new FileOutputStream(tempInputFile.toFile())) {
-            outputStream.write(pdfBytes);
+        // Validate input file type
+        if (!"application/pdf".equals(inputFile.getContentType())) {
+            logger.error("Invalid input file type: {}", inputFile.getContentType());
+            throw new IllegalArgumentException("Input file must be a PDF");
         }
 
-        // Prepare the output file path
-        Path tempOutputFile = Files.createTempFile("output_", ".pdf");
-
-        // Prepare the ghostscript command
-        List<String> command = new ArrayList<>();
-        command.add("gs");
-        command.add("-dPDFA=" + ("pdfa".equals(outputFormat) ? "2" : "1"));
-        command.add("-dNOPAUSE");
-        command.add("-dBATCH");
-        command.add("-sColorConversionStrategy=sRGB");
-        command.add("-sDEVICE=pdfwrite");
-        command.add("-dPDFACompatibilityPolicy=2");
-        command.add("-o");
-        command.add(tempOutputFile.toString());
-        command.add(tempInputFile.toString());
-
-        ProcessExecutorResult returnCode =
-                ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
-                        .runCommandWithOutputHandling(command);
-
-        if (returnCode.getRc() != 0) {
-            logger.info(
-                    outputFormat + " conversion failed with return code: " + returnCode.getRc());
+        // Get the original filename without extension
+        String originalFileName = Filenames.toSimpleFileName(inputFile.getOriginalFilename());
+        if (originalFileName == null || originalFileName.trim().isEmpty()) {
+            originalFileName = "output.pdf";
         }
+        String baseFileName =
+                originalFileName.contains(".")
+                        ? originalFileName.substring(0, originalFileName.lastIndexOf('.'))
+                        : originalFileName;
+
+        Path tempInputFile = null;
+        Path tempOutputDir = null;
+        byte[] fileBytes;
 
         try {
-            byte[] pdfBytesOutput = Files.readAllBytes(tempOutputFile);
-            // Return the optimized PDF as a response
-            String outputFilename =
-                    Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-                                    .replaceFirst("[.][^.]+$", "")
-                            + "_PDFA.pdf";
+            // Save uploaded file to temp location
+            tempInputFile = Files.createTempFile("input_", ".pdf");
+            inputFile.transferTo(tempInputFile);
+
+            // Create temp output directory
+            tempOutputDir = Files.createTempDirectory("output_");
+
+            // Determine PDF/A filter based on requested format
+            String pdfFilter =
+                    "pdfa".equals(outputFormat)
+                            ? "writer_pdf_Export:{'SelectPdfVersion':{'Value':'2'}}:writer_pdf_Export"
+                            : "writer_pdf_Export:{'SelectPdfVersion':{'Value':'1'}}:writer_pdf_Export";
+
+            // Prepare LibreOffice command
+            List<String> command =
+                    new ArrayList<>(
+                            Arrays.asList(
+                                    "soffice",
+                                    "--headless",
+                                    "--nologo",
+                                    "--convert-to",
+                                    "pdf:" + pdfFilter,
+                                    "--outdir",
+                                    tempOutputDir.toString(),
+                                    tempInputFile.toString()));
+
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.LIBRE_OFFICE)
+                            .runCommandWithOutputHandling(command);
+
+            if (returnCode.getRc() != 0) {
+                logger.error("PDF/A conversion failed with return code: {}", returnCode.getRc());
+                throw new RuntimeException("PDF/A conversion failed");
+            }
+
+            // Get the output file
+            File[] outputFiles = tempOutputDir.toFile().listFiles();
+            if (outputFiles == null || outputFiles.length != 1) {
+                throw new RuntimeException(
+                        "Expected exactly one output file but found "
+                                + (outputFiles == null ? "none" : outputFiles.length));
+            }
+
+            fileBytes = FileUtils.readFileToByteArray(outputFiles[0]);
+            String outputFilename = baseFileName + "_PDFA.pdf";
+
             return WebResponseUtils.bytesToWebResponse(
-                    pdfBytesOutput, outputFilename, MediaType.APPLICATION_PDF);
+                    fileBytes, outputFilename, MediaType.APPLICATION_PDF);
+
         } finally {
-            // Clean up the temporary files
-            Files.deleteIfExists(tempInputFile);
-            Files.deleteIfExists(tempOutputFile);
+            // Clean up temporary files
+            if (tempInputFile != null) {
+                Files.deleteIfExists(tempInputFile);
+            }
+            if (tempOutputDir != null) {
+                FileUtils.deleteDirectory(tempOutputDir.toFile());
+            }
         }
     }
 }

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

@@ -20,7 +20,7 @@ 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.controller.api.CropController;
+
 import stirling.software.SPDF.model.api.extract.PDFFilePage;
 import stirling.software.SPDF.pdf.FlexibleCSVWriter;
 import technology.tabula.ObjectExtractor;
@@ -37,11 +37,15 @@ public class ExtractCSVController {
     private static final Logger logger = LoggerFactory.getLogger(ExtractCSVController.class);
 
     @PostMapping(value = "/pdf/csv", consumes = "multipart/form-data")
-    @Operation(summary = "Extracts a CSV document from a PDF", description = "This operation takes an input PDF file and returns CSV file of whole page. Input:PDF Output:CSV Type:SISO")
+    @Operation(
+            summary = "Extracts a CSV document from a PDF",
+            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 {
         StringWriter writer = new StringWriter();
         try (PDDocument document = Loader.loadPDF(form.getFileInput().getBytes())) {
-            CSVFormat format = CSVFormat.EXCEL.builder().setEscape('"').setQuoteMode(QuoteMode.ALL).build();
+            CSVFormat format =
+                    CSVFormat.EXCEL.builder().setEscape('"').setQuoteMode(QuoteMode.ALL).build();
             Writer csvWriter = new FlexibleCSVWriter(format);
             SpreadsheetExtractionAlgorithm sea = new SpreadsheetExtractionAlgorithm();
             try (ObjectExtractor extractor = new ObjectExtractor(document)) {
@@ -56,8 +60,8 @@ public class ExtractCSVController {
                 ContentDisposition.builder("attachment")
                         .filename(
                                 form.getFileInput()
-                                        .getOriginalFilename()
-                                        .replaceFirst("[.][^.]+$", "")
+                                                .getOriginalFilename()
+                                                .replaceFirst("[.][^.]+$", "")
                                         + "_extracted.csv")
                         .build());
         headers.setContentType(MediaType.parseMediaType("text/csv"));

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

@@ -10,7 +10,6 @@ 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;
@@ -53,6 +52,54 @@ public class CompressController {
         this.pdfDocumentFactory = pdfDocumentFactory;
     }
 
+    private void compressImagesInPDF(Path pdfFile, double initialScaleFactor) throws Exception {
+        byte[] fileBytes = Files.readAllBytes(pdfFile);
+        try (PDDocument doc = Loader.loadPDF(fileBytes)) {
+            double scaleFactor = initialScaleFactor;
+
+            for (PDPage page : doc.getPages()) {
+                PDResources res = page.getResources();
+                if (res != null && res.getXObjectNames() != null) {
+                    for (COSName name : res.getXObjectNames()) {
+                        PDXObject xobj = res.getXObject(name);
+                        if (xobj instanceof PDImageXObject) {
+                            PDImageXObject image = (PDImageXObject) xobj;
+                            BufferedImage bufferedImage = image.getImage();
+
+                            int newWidth = (int) (bufferedImage.getWidth() * scaleFactor);
+                            int newHeight = (int) (bufferedImage.getHeight() * scaleFactor);
+
+                            if (newWidth == 0 || newHeight == 0) {
+                                continue;
+                            }
+
+                            Image scaledImage =
+                                    bufferedImage.getScaledInstance(
+                                            newWidth, newHeight, Image.SCALE_SMOOTH);
+
+                            BufferedImage scaledBufferedImage =
+                                    new BufferedImage(
+                                            newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
+                            scaledBufferedImage.getGraphics().drawImage(scaledImage, 0, 0, null);
+
+                            ByteArrayOutputStream compressedImageStream =
+                                    new ByteArrayOutputStream();
+                            ImageIO.write(scaledBufferedImage, "jpeg", compressedImageStream);
+                            byte[] imageBytes = compressedImageStream.toByteArray();
+                            compressedImageStream.close();
+
+                            PDImageXObject compressedImage =
+                                    PDImageXObject.createFromByteArray(
+                                            doc, imageBytes, image.getCOSObject().toString());
+                            res.put(name, compressedImage);
+                        }
+                    }
+                }
+            }
+            doc.save(pdfFile.toString());
+        }
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/compress-pdf")
     @Operation(
             summary = "Optimize PDF file",
@@ -75,209 +122,92 @@ public class CompressController {
             autoMode = true;
         }
 
-        // Save the uploaded file to a temporary location
         Path tempInputFile = Files.createTempFile("input_", ".pdf");
         inputFile.transferTo(tempInputFile.toFile());
 
         long inputFileSize = Files.size(tempInputFile);
 
-        // Prepare the output file path
-
         Path tempOutputFile = null;
         byte[] pdfBytes;
         try {
             tempOutputFile = Files.createTempFile("output_", ".pdf");
-            // Determine initial optimization level based on expected size reduction, only if in
-            // autoMode
+
             if (autoMode) {
                 double sizeReductionRatio = expectedOutputSize / (double) inputFileSize;
-                if (sizeReductionRatio > 0.7) {
-                    optimizeLevel = 1;
-                } else if (sizeReductionRatio > 0.5) {
-                    optimizeLevel = 2;
-                } else if (sizeReductionRatio > 0.35) {
-                    optimizeLevel = 3;
-                } else {
-                    optimizeLevel = 3;
-                }
+                optimizeLevel = determineOptimizeLevel(sizeReductionRatio);
             }
 
             boolean sizeMet = false;
-            while (!sizeMet && optimizeLevel <= 4) {
-                // Prepare the Ghostscript command
-                List<String> command = new ArrayList<>();
-                command.add("gs");
-                command.add("-sDEVICE=pdfwrite");
-                command.add("-dCompatibilityLevel=1.5");
+            while (!sizeMet && optimizeLevel <= 9) {
 
-                switch (optimizeLevel) {
-                    case 1:
-                        command.add("-dPDFSETTINGS=/prepress");
-                        break;
-                    case 2:
-                        command.add("-dPDFSETTINGS=/printer");
-                        break;
-                    case 3:
-                        command.add("-dPDFSETTINGS=/ebook");
-                        break;
-                    case 4:
-                        command.add("-dPDFSETTINGS=/screen");
-                        break;
-                    default:
-                        command.add("-dPDFSETTINGS=/default");
+                // Apply additional image compression for levels 6-9
+                if (optimizeLevel >= 6) {
+                    // Calculate scale factor based on optimization level
+                    double scaleFactor =
+                            switch (optimizeLevel) {
+                                case 6 -> 0.9; // 90% of original size
+                                case 7 -> 0.8; // 80% of original size
+                                case 8 -> 0.65; // 70% of original size
+                                case 9 -> 0.5; // 60% of original size
+                                default -> 1.0;
+                            };
+                    compressImagesInPDF(tempInputFile, scaleFactor);
                 }
 
-                command.add("-dNOPAUSE");
-                command.add("-dQUIET");
-                command.add("-dBATCH");
-                command.add("-sOutputFile=" + tempOutputFile.toString());
+                // Run QPDF optimization
+                List<String> command = new ArrayList<>();
+                command.add("qpdf");
+                if (request.getNormalize()) {
+                    command.add("--normalize-content=y");
+                }
+                if (request.getLinearize()) {
+                    command.add("--linearize");
+                }
+                command.add("--optimize-images");
+                command.add("--recompress-flate");
+                command.add("--compression-level=" + optimizeLevel);
+                command.add("--compress-streams=y");
+                command.add("--object-streams=generate");
                 command.add(tempInputFile.toString());
+                command.add(tempOutputFile.toString());
 
-                ProcessExecutorResult returnCode =
-                        ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
-                                .runCommandWithOutputHandling(command);
+                ProcessExecutorResult returnCode = null;
+                try {
+                    returnCode =
+                            ProcessExecutor.getInstance(ProcessExecutor.Processes.QPDF)
+                                    .runCommandWithOutputHandling(command);
+                } catch (Exception e) {
+                    if (returnCode != null && returnCode.getRc() != 3) {
+                        throw e;
+                    }
+                }
 
-                // Check if file size is within expected size or not auto mode so instantly finish
+                // Check if file size is within expected size or not auto mode
                 long outputFileSize = Files.size(tempOutputFile);
                 if (outputFileSize <= expectedOutputSize || !autoMode) {
                     sizeMet = true;
                 } else {
-                    // Increase optimization level for next iteration
-                    optimizeLevel++;
-                    if (autoMode && optimizeLevel > 4) {
-                        logger.info("Skipping level 5 due to bad results in auto mode");
+                    optimizeLevel =
+                            incrementOptimizeLevel(
+                                    optimizeLevel, outputFileSize, expectedOutputSize);
+                    if (autoMode && optimizeLevel > 9) {
+                        logger.info("Maximum compression level reached in auto mode");
                         sizeMet = true;
-                    } else {
-                        logger.info(
-                                "Increasing ghostscript optimisation level to " + optimizeLevel);
                     }
                 }
             }
 
-            if (expectedOutputSize != null && autoMode) {
-                long outputFileSize = Files.size(tempOutputFile);
-                byte[] fileBytes = Files.readAllBytes(tempOutputFile);
-                if (outputFileSize > expectedOutputSize) {
-                    try (PDDocument doc = Loader.loadPDF(fileBytes)) {
-                        long previousFileSize = 0;
-                        double scaleFactorConst = 0.9f;
-                        double scaleFactor = 0.9f;
-                        while (true) {
-                            for (PDPage page : doc.getPages()) {
-                                PDResources res = page.getResources();
-                                if (res != null && res.getXObjectNames() != null) {
-                                    for (COSName name : res.getXObjectNames()) {
-                                        PDXObject xobj = res.getXObject(name);
-                                        if (xobj != null && xobj instanceof PDImageXObject) {
-                                            PDImageXObject image = (PDImageXObject) xobj;
-
-                                            // Get the image in BufferedImage format
-                                            BufferedImage bufferedImage = image.getImage();
-
-                                            // Calculate the new dimensions
-                                            int newWidth =
-                                                    (int)
-                                                            (bufferedImage.getWidth()
-                                                                    * scaleFactorConst);
-                                            int newHeight =
-                                                    (int)
-                                                            (bufferedImage.getHeight()
-                                                                    * scaleFactorConst);
-
-                                            // If the new dimensions are zero, skip this iteration
-                                            if (newWidth == 0 || newHeight == 0) {
-                                                continue;
-                                            }
-
-                                            // Otherwise, proceed with the scaling
-                                            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);
-                                            scaledBufferedImage
-                                                    .getGraphics()
-                                                    .drawImage(scaledImage, 0, 0, null);
-
-                                            // Compress the scaled image
-                                            ByteArrayOutputStream compressedImageStream =
-                                                    new ByteArrayOutputStream();
-                                            ImageIO.write(
-                                                    scaledBufferedImage,
-                                                    "jpeg",
-                                                    compressedImageStream);
-                                            byte[] imageBytes = compressedImageStream.toByteArray();
-                                            compressedImageStream.close();
-
-                                            PDImageXObject compressedImage =
-                                                    PDImageXObject.createFromByteArray(
-                                                            doc,
-                                                            imageBytes,
-                                                            image.getCOSObject().toString());
-
-                                            // Replace the image in the resources with the
-                                            // compressed
-                                            // version
-                                            res.put(name, compressedImage);
-                                        }
-                                    }
-                                }
-                            }
-
-                            // save the document to tempOutputFile again
-                            doc.save(tempOutputFile.toString());
-
-                            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
-
-                                logger.info(
-                                        "Current file size: "
-                                                + FileUtils.byteCountToDisplaySize(currentSize));
-                                logger.info("Current scale factor: " + scaleFactor);
-
-                                // The file is still too large, reduce scaleFactor and try again
-                                scaleFactor *= 0.9f; // reduce scaleFactor by 10%
-                                // Avoid scaleFactor being too small, causing the image to shrink to
-                                // 0
-                                if (scaleFactor < 0.2f || 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");
-                                }
-                                previousFileSize = currentSize;
-                            } else {
-                                // The file is small enough, break the loop
-                                break;
-                            }
-                        }
-                    }
-                }
-            }
             // Read the optimized PDF file
             pdfBytes = Files.readAllBytes(tempOutputFile);
             Path finalFile = tempOutputFile;
+
             // Check if optimized file is larger than the original
             if (pdfBytes.length > inputFileSize) {
-                // Log the occurrence
                 logger.warn(
                         "Optimized file is larger than the original. Returning the original file instead.");
-
-                // Read the original file again
                 finalFile = tempInputFile;
             }
-            // Return the optimized PDF as a response
+
             String outputFilename =
                     Filenames.toSimpleFileName(inputFile.getOriginalFilename())
                                     .replaceFirst("[.][^.]+$", "")
@@ -286,10 +216,31 @@ public class CompressController {
                     pdfDocumentFactory.load(finalFile.toFile()), outputFilename);
 
         } finally {
-            // Clean up the temporary files
-            // deleted by multipart file handler deu to transferTo?
-            // Files.deleteIfExists(tempInputFile);
             Files.deleteIfExists(tempOutputFile);
         }
     }
+
+    private int determineOptimizeLevel(double sizeReductionRatio) {
+        if (sizeReductionRatio > 0.9) return 1;
+        if (sizeReductionRatio > 0.8) return 2;
+        if (sizeReductionRatio > 0.7) return 3;
+        if (sizeReductionRatio > 0.6) return 4;
+        if (sizeReductionRatio > 0.5) return 5;
+        if (sizeReductionRatio > 0.4) return 6;
+        if (sizeReductionRatio > 0.3) return 7;
+        if (sizeReductionRatio > 0.2) return 8;
+        return 9;
+    }
+
+    private int incrementOptimizeLevel(int currentLevel, long currentSize, long targetSize) {
+        double currentRatio = currentSize / (double) targetSize;
+        logger.info("Current compression ratio: {}", String.format("%.2f", currentRatio));
+
+        if (currentRatio > 2.0) {
+            return Math.min(9, currentLevel + 3);
+        } else if (currentRatio > 1.5) {
+            return Math.min(9, currentLevel + 2);
+        }
+        return Math.min(9, currentLevel + 1);
+    }
 }

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

@@ -58,7 +58,7 @@ public class FakeScanControllerWIP {
     @Operation(
             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.")
+                    "This endpoint repairs a given PDF file by running qpdf command. The PDF is first saved to a temporary location, repaired, read back, and then returned as a response.")
     public ResponseEntity<byte[]> fakeScan(@ModelAttribute PDFFile request) throws IOException {
         MultipartFile inputFile = request.getFileInput();
 

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

@@ -14,6 +14,8 @@ import org.apache.pdfbox.pdmodel.PDDocumentInformation;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.WebDataBinder;
+import org.springframework.web.bind.annotation.InitBinder;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -26,6 +28,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.misc.MetadataRequest;
 import stirling.software.SPDF.utils.WebResponseUtils;
+import stirling.software.SPDF.utils.propertyeditor.StringToMapPropertyEditor;
 
 @RestController
 @RequestMapping("/api/v1/misc")
@@ -44,6 +47,11 @@ public class MetadataController {
         return entry;
     }
 
+    @InitBinder
+    public void initBinder(WebDataBinder binder) {
+        binder.registerCustomEditor(Map.class, "allRequestParams", new StringToMapPropertyEditor());
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/update-metadata")
     @Operation(
             summary = "Update metadata of a PDF file",

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

@@ -1,19 +1,29 @@
 package stirling.software.SPDF.controller.api.misc;
 
-import java.io.ByteArrayInputStream;
+import java.awt.image.BufferedImage;
+import java.io.BufferedReader;
 import java.io.File;
-import java.io.FileOutputStream;
+import java.io.FileInputStream;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 import java.util.stream.Collectors;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
+import javax.imageio.ImageIO;
+
+import org.apache.pdfbox.multipdf.PDFMergerUtility;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.rendering.PDFRenderer;
+import org.apache.pdfbox.text.PDFTextStripper;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -23,24 +33,31 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
+import io.github.pixee.security.BoundedLineReader;
 import io.github.pixee.security.Filenames;
-import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
+import lombok.extern.slf4j.Slf4j;
 import stirling.software.SPDF.model.ApplicationProperties;
 import stirling.software.SPDF.model.api.misc.ProcessPdfWithOcrRequest;
 import stirling.software.SPDF.service.CustomPDDocumentFactory;
-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")
+@Slf4j
 public class OCRController {
 
-    @Autowired ApplicationProperties applicationProperties;
+    @Autowired private ApplicationProperties applicationProperties;
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public OCRController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
+    /** Gets the list of available Tesseract languages from the tessdata directory */
     public List<String> getAvailableTesseractLanguages() {
         String tessdataDir = applicationProperties.getSystem().getTessdataDir();
         File[] files = new File(tessdataDir).listFiles();
@@ -54,196 +71,163 @@ public class OCRController {
                 .collect(Collectors.toList());
     }
 
-    private final CustomPDDocumentFactory pdfDocumentFactory;
-
-    @Autowired
-    public OCRController(CustomPDDocumentFactory pdfDocumentFactory) {
-        this.pdfDocumentFactory = pdfDocumentFactory;
-    }
-
     @PostMapping(consumes = "multipart/form-data", value = "/ocr-pdf")
-    @Operation(
-            summary = "Process a PDF file with OCR",
-            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();
-        Boolean deskew = request.isDeskew();
-        Boolean clean = request.isClean();
-        Boolean cleanFinal = request.isCleanFinal();
+        List<String> languages = request.getLanguages();
         String ocrType = request.getOcrType();
-        String ocrRenderType = request.getOcrRenderType();
-        Boolean removeImagesAfter = request.isRemoveImagesAfter();
-        // --output-type pdfa
-        if (selectedLanguages == null || selectedLanguages.isEmpty()) {
-            throw new IOException("Please select at least one language.");
-        }
 
-        if (!"hocr".equals(ocrRenderType) && !"sandwich".equals(ocrRenderType)) {
-            throw new IOException("ocrRenderType wrong");
-        }
+        Path tempDir = Files.createTempDirectory("ocr_process");
+        Path tempInputFile = tempDir.resolve("input.pdf");
+        Path tempOutputDir = tempDir.resolve("output");
+        Path tempImagesDir = tempDir.resolve("images");
+        Path finalOutputFile = tempDir.resolve("final_output.pdf");
 
-        // Get available Tesseract languages
-        List<String> availableLanguages = getAvailableTesseractLanguages();
-
-        // Validate selected languages
-        selectedLanguages =
-                selectedLanguages.stream().filter(availableLanguages::contains).toList();
-
-        if (selectedLanguages.isEmpty()) {
-            throw new IOException("None of the selected languages are valid.");
-        }
-        // Save the uploaded file to a temporary location
-        Path tempInputFile = Files.createTempFile("input_", ".pdf");
-        Path tempOutputFile = Files.createTempFile("output_", ".pdf");
-        Path sidecarTextPath = null;
+        Files.createDirectories(tempOutputDir);
+        Files.createDirectories(tempImagesDir);
 
         try {
+            // Save input file
             inputFile.transferTo(tempInputFile.toFile());
+            PDFMergerUtility merger = new PDFMergerUtility();
+            merger.setDestinationFileName(finalOutputFile.toString());
 
-            // Run OCR Command
-            String languageOption = String.join("+", selectedLanguages);
+            try (PDDocument document = pdfDocumentFactory.load(tempInputFile.toFile())) {
+                PDFRenderer pdfRenderer = new PDFRenderer(document);
+                int pageCount = document.getNumberOfPages();
 
-            List<String> command =
-                    new ArrayList<>(
-                            Arrays.asList(
-                                    "ocrmypdf",
-                                    "--verbose",
-                                    "2",
-                                    "--output-type",
-                                    "pdf",
-                                    "--pdf-renderer",
-                                    ocrRenderType));
+                for (int pageNum = 0; pageNum < pageCount; pageNum++) {
+                    PDPage page = document.getPage(pageNum);
+                    boolean hasText = false;
 
-            if (sidecar != null && sidecar) {
-                sidecarTextPath = Files.createTempFile("sidecar", ".txt");
-                command.add("--sidecar");
-                command.add(sidecarTextPath.toString());
-            }
+                    // Check for existing text
+                    try (PDDocument tempDoc = new PDDocument()) {
+                        tempDoc.addPage(page);
+                        PDFTextStripper stripper = new PDFTextStripper();
+                        hasText = !stripper.getText(tempDoc).trim().isEmpty();
+                    }
 
-            if (deskew != null && deskew) {
-                command.add("--deskew");
-            }
-            if (clean != null && clean) {
-                command.add("--clean");
-            }
-            if (cleanFinal != null && cleanFinal) {
-                command.add("--clean-final");
-            }
-            if (ocrType != null && !"".equals(ocrType)) {
-                if ("skip-text".equals(ocrType)) {
-                    command.add("--skip-text");
-                } else if ("force-ocr".equals(ocrType)) {
-                    command.add("--force-ocr");
-                } else if ("Normal".equals(ocrType)) {
+                    boolean shouldOcr =
+                            switch (ocrType) {
+                                case "skip-text" -> !hasText;
+                                case "force-ocr" -> true;
+                                default -> true;
+                            };
 
+                    Path pageOutputPath =
+                            tempOutputDir.resolve(String.format("page_%d.pdf", pageNum));
+
+                    if (shouldOcr) {
+                        // Convert page to image
+                        BufferedImage image = pdfRenderer.renderImageWithDPI(pageNum, 300);
+                        Path imagePath =
+                                tempImagesDir.resolve(String.format("page_%d.png", pageNum));
+                        ImageIO.write(image, "png", imagePath.toFile());
+
+                        // Build OCR command
+                        List<String> command = new ArrayList<>();
+                        command.add("tesseract");
+                        command.add(imagePath.toString());
+                        command.add(
+                                tempOutputDir
+                                        .resolve(String.format("page_%d", pageNum))
+                                        .toString());
+                        command.add("-l");
+                        command.add(String.join("+", languages));
+                        command.add("pdf"); // Always output PDF
+
+                        ProcessBuilder pb = new ProcessBuilder(command);
+                        Process process = pb.start();
+
+                        // Capture any error output
+                        try (BufferedReader reader =
+                                new BufferedReader(
+                                        new InputStreamReader(process.getErrorStream()))) {
+                            String line;
+                            while ((line = BoundedLineReader.readLine(reader, 5_000_000)) != null) {
+                                log.debug("Tesseract: {}", line);
+                            }
+                        }
+
+                        int exitCode = process.waitFor();
+                        if (exitCode != 0) {
+                            throw new RuntimeException(
+                                    "Tesseract failed with exit code: " + exitCode);
+                        }
+
+                        // Add OCR'd PDF to merger
+                        merger.addSource(pageOutputPath.toFile());
+                    } else {
+                        // Save original page without OCR
+                        try (PDDocument pageDoc = new PDDocument()) {
+                            pageDoc.addPage(page);
+                            pageDoc.save(pageOutputPath.toFile());
+                            merger.addSource(pageOutputPath.toFile());
+                        }
+                    }
                 }
             }
 
-            command.addAll(
-                    Arrays.asList(
-                            "--language",
-                            languageOption,
-                            tempInputFile.toString(),
-                            tempOutputFile.toString()));
+            // Merge all pages into final PDF
+            merger.mergeDocuments(null);
 
-            // Run CLI command
-            ProcessExecutorResult result =
-                    ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
-                            .runCommandWithOutputHandling(command);
-            if (result.getRc() != 0
-                    && 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());
-
-                ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
-                        .runCommandWithOutputHandling(gsCommand);
-                tempOutputFile = tempPdfWithoutImages;
-            }
-            // Read the OCR processed PDF file
-            byte[] pdfBytes = pdfDocumentFactory.loadToBytes(tempOutputFile.toFile());
-
-            // Return the OCR processed PDF as a response
+            // Read the final PDF file
+            byte[] pdfContent = Files.readAllBytes(finalOutputFile);
             String outputFilename =
                     Filenames.toSimpleFileName(inputFile.getOriginalFilename())
                                     .replaceFirst("[.][^.]+$", "")
                             + "_OCR.pdf";
 
-            if (sidecar != null && sidecar) {
-                // Create a zip file containing both the PDF and the text file
-                String outputZipFilename =
-                        Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-                                        .replaceFirst("[.][^.]+$", "")
-                                + "_OCR.zip";
-                Path tempZipFile = Files.createTempFile("output_", ".zip");
+            return ResponseEntity.ok()
+                    .header(
+                            "Content-Disposition",
+                            "attachment; filename=\"" + outputFilename + "\"")
+                    .contentType(MediaType.APPLICATION_PDF)
+                    .body(pdfContent);
 
-                try (ZipOutputStream zipOut =
-                        new ZipOutputStream(new FileOutputStream(tempZipFile.toFile()))) {
-                    // Add PDF file to the zip
-                    ZipEntry pdfEntry = new ZipEntry(outputFilename);
-                    zipOut.putNextEntry(pdfEntry);
-                    try (ByteArrayInputStream pdfInputStream = new ByteArrayInputStream(pdfBytes)) {
-                        byte[] buffer = new byte[1024];
-                        int length;
-                        while ((length = pdfInputStream.read(buffer)) != -1) {
-                            zipOut.write(buffer, 0, length);
-                        }
-                    }
-                    zipOut.closeEntry();
-
-                    // Add text file to the zip
-                    ZipEntry txtEntry = new ZipEntry(outputFilename.replace(".pdf", ".txt"));
-                    zipOut.putNextEntry(txtEntry);
-                    Files.copy(sidecarTextPath, zipOut);
-                    zipOut.closeEntry();
-                }
-
-                byte[] zipBytes = Files.readAllBytes(tempZipFile);
-
-                // Clean up the temporary zip file
-                Files.deleteIfExists(tempZipFile);
-                Files.deleteIfExists(tempOutputFile);
-                Files.deleteIfExists(sidecarTextPath);
-
-                // Return the zip file containing both the PDF and the text file
-                return WebResponseUtils.bytesToWebResponse(
-                        zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
-            } else {
-                // Return the OCR processed PDF as a response
-                Files.deleteIfExists(tempOutputFile);
-                return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
-            }
         } finally {
-            // Clean up the temporary files
-            Files.deleteIfExists(tempOutputFile);
-            // Comment out as transferTo makes multipart handle cleanup
-            // Files.deleteIfExists(tempInputFile);
-            if (sidecarTextPath != null) {
-                Files.deleteIfExists(sidecarTextPath);
+            // Clean up temporary files
+            deleteDirectory(tempDir);
+        }
+    }
+
+    private void addFileToZip(File file, String filename, ZipOutputStream zipOut)
+            throws IOException {
+        if (!file.exists()) {
+            log.warn("File {} does not exist, skipping", file);
+            return;
+        }
+
+        try (FileInputStream fis = new FileInputStream(file)) {
+            ZipEntry zipEntry = new ZipEntry(filename);
+            zipOut.putNextEntry(zipEntry);
+
+            byte[] buffer = new byte[1024];
+            int length;
+            while ((length = fis.read(buffer)) >= 0) {
+                zipOut.write(buffer, 0, length);
             }
+
+            zipOut.closeEntry();
+        }
+    }
+
+    private void deleteDirectory(Path directory) {
+        try {
+            Files.walk(directory)
+                    .sorted(Comparator.reverseOrder())
+                    .forEach(
+                            path -> {
+                                try {
+                                    Files.delete(path);
+                                } catch (IOException e) {
+                                    log.error("Error deleting {}: {}", path, e.getMessage());
+                                }
+                            });
+        } catch (IOException e) {
+            log.error("Error walking directory {}: {}", directory, e.getMessage());
         }
     }
 }

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

@@ -44,30 +44,29 @@ public class RepairController {
     @Operation(
             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")
+                    "This endpoint repairs a given PDF file by running qpdf 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 {
         MultipartFile inputFile = request.getFileInput();
         // Save the uploaded file to a temporary location
         Path tempInputFile = Files.createTempFile("input_", ".pdf");
-        Path tempOutputFile = Files.createTempFile("output_", ".pdf");
         byte[] pdfBytes = null;
         inputFile.transferTo(tempInputFile.toFile());
         try {
 
             List<String> command = new ArrayList<>();
-            command.add("gs");
-            command.add("-o");
-            command.add(tempOutputFile.toString());
-            command.add("-sDEVICE=pdfwrite");
+            command.add("qpdf");
+            command.add("--replace-input"); // Automatically fixes problems it can
+            command.add("--qdf"); // Linearizes and normalizes PDF structure
+            command.add("--object-streams=disable"); // Can help with some corruptions
             command.add(tempInputFile.toString());
 
             ProcessExecutorResult returnCode =
-                    ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.QPDF)
                             .runCommandWithOutputHandling(command);
 
             // Read the optimized PDF file
-            pdfBytes = pdfDocumentFactory.loadToBytes(tempOutputFile.toFile());
+            pdfBytes = pdfDocumentFactory.loadToBytes(tempInputFile.toFile());
 
             // Return the optimized PDF as a response
             String outputFilename =
@@ -78,7 +77,6 @@ public class RepairController {
         } finally {
             // Clean up the temporary files
             Files.deleteIfExists(tempInputFile);
-            Files.deleteIfExists(tempOutputFile);
         }
     }
 }

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

@@ -229,10 +229,22 @@ public class StampController {
                     calculatePositionY(
                             pageSize, position, calculateTextCapHeight(font, fontSize), margin);
         }
+        // Split the stampText into multiple lines
+        String[] lines = stampText.split("\\\\n");
+
+        // Calculate dynamic line height based on font ascent and descent
+        float ascent = font.getFontDescriptor().getAscent();
+        float descent = font.getFontDescriptor().getDescent();
+        float lineHeight = ((ascent - descent) / 1000) * fontSize;
 
         contentStream.beginText();
-        contentStream.setTextMatrix(Matrix.getRotateInstance(Math.toRadians(rotation), x, y));
-        contentStream.showText(stampText);
+        for (int i = 0; i < lines.length; i++) {
+            String line = lines[i];
+            // Set the text matrix for each line with rotation
+            contentStream.setTextMatrix(
+                    Matrix.getRotateInstance(Math.toRadians(rotation), x, y - (i * lineHeight)));
+            contentStream.showText(line);
+        }
         contentStream.endText();
     }
 

src/main/java/stirling/software/SPDF/controller/api/security/CertSignController.java

@@ -98,10 +98,10 @@ public class CertSignController {
 
         public CreateSignature(KeyStore keystore, char[] pin)
                 throws KeyStoreException,
-                UnrecoverableKeyException,
-                NoSuchAlgorithmException,
-                IOException,
-                CertificateException {
+                        UnrecoverableKeyException,
+                        NoSuchAlgorithmException,
+                        IOException,
+                        CertificateException {
             super(keystore, pin);
             ClassPathResource resource = new ClassPathResource("static/images/signature.png");
             try (InputStream is = resource.getInputStream()) {
@@ -160,7 +160,8 @@ public class CertSignController {
                         extState.setNonStrokingAlphaConstant(0.5f);
                         cs.setGraphicsStateParameters(extState);
                         cs.transform(Matrix.getScaleInstance(0.08f, 0.08f));
-                        PDImageXObject img = PDImageXObject.createFromFileByExtension(logoFile, doc);
+                        PDImageXObject img =
+                                PDImageXObject.createFromFileByExtension(logoFile, doc);
                         cs.drawImage(img, 100, 0);
                         cs.restoreGraphicsState();
                     }
@@ -208,7 +209,10 @@ public class CertSignController {
     }
 
     @PostMapping(consumes = "multipart/form-data", value = "/cert-sign")
-    @Operation(summary = "Sign PDF with a Digital Certificate", description = "This endpoint accepts a PDF file, a digital certificate and related information to sign the PDF. It then returns the digitally signed PDF file. Input:PDF Output:PDF Type:SISO")
+    @Operation(
+            summary = "Sign PDF with a Digital Certificate",
+            description =
+                    "This endpoint accepts a PDF file, a digital certificate and related information to sign the PDF. It then returns the digitally signed PDF file. Input:PDF Output:PDF Type:SISO")
     public ResponseEntity<byte[]> signPDFWithCert(@ModelAttribute SignPDFWithCertRequest request)
             throws Exception {
         MultipartFile pdf = request.getFileInput();
@@ -238,7 +242,7 @@ public class CertSignController {
                 PrivateKey privateKey = getPrivateKeyFromPEM(privateKeyFile.getBytes(), password);
                 Certificate cert = (Certificate) getCertificateFromPEM(certFile.getBytes());
                 ks.setKeyEntry(
-                        "alias", privateKey, password.toCharArray(), new Certificate[] { cert });
+                        "alias", privateKey, password.toCharArray(), new Certificate[] {cert});
                 break;
             case "PKCS12":
                 ks = KeyStore.getInstance("PKCS12");
@@ -310,19 +314,22 @@ public class CertSignController {
 
     private PrivateKey getPrivateKeyFromPEM(byte[] pemBytes, String password)
             throws IOException, OperatorCreationException, PKCSException {
-        try (PEMParser pemParser = new PEMParser(new InputStreamReader(new ByteArrayInputStream(pemBytes)))) {
+        try (PEMParser pemParser =
+                new PEMParser(new InputStreamReader(new ByteArrayInputStream(pemBytes)))) {
             Object pemObject = pemParser.readObject();
             JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider("BC");
             PrivateKeyInfo pkInfo;
             if (pemObject instanceof PKCS8EncryptedPrivateKeyInfo) {
-                InputDecryptorProvider decProv = new JceOpenSSLPKCS8DecryptorProviderBuilder()
-                        .build(password.toCharArray());
+                InputDecryptorProvider decProv =
+                        new JceOpenSSLPKCS8DecryptorProviderBuilder().build(password.toCharArray());
                 pkInfo = ((PKCS8EncryptedPrivateKeyInfo) pemObject).decryptPrivateKeyInfo(decProv);
             } else if (pemObject instanceof PEMEncryptedKeyPair) {
-                PEMDecryptorProvider decProv = new JcePEMDecryptorProviderBuilder().build(password.toCharArray());
-                pkInfo = ((PEMEncryptedKeyPair) pemObject)
-                        .decryptKeyPair(decProv)
-                        .getPrivateKeyInfo();
+                PEMDecryptorProvider decProv =
+                        new JcePEMDecryptorProviderBuilder().build(password.toCharArray());
+                pkInfo =
+                        ((PEMEncryptedKeyPair) pemObject)
+                                .decryptKeyPair(decProv)
+                                .getPrivateKeyInfo();
             } else {
                 pkInfo = ((PEMKeyPair) pemObject).getPrivateKeyInfo();
             }

src/main/java/stirling/software/SPDF/controller/api/security/GetInfoOnPDF.java

@@ -322,27 +322,14 @@ public class GetInfoOnPDF {
                 PDEncryption pdfEncryption = pdfBoxDoc.getEncryption();
                 encryption.put("EncryptionAlgorithm", pdfEncryption.getFilter());
                 encryption.put("KeyLength", pdfEncryption.getLength());
-                AccessPermission ap = pdfBoxDoc.getCurrentAccessPermission();
-                if (ap != null) {
-                    ObjectNode permissionsNode = objectMapper.createObjectNode();
-
-                    permissionsNode.put("CanAssembleDocument", ap.canAssembleDocument());
-                    permissionsNode.put("CanExtractContent", ap.canExtractContent());
-                    permissionsNode.put(
-                            "CanExtractForAccessibility", ap.canExtractForAccessibility());
-                    permissionsNode.put("CanFillInForm", ap.canFillInForm());
-                    permissionsNode.put("CanModify", ap.canModify());
-                    permissionsNode.put("CanModifyAnnotations", ap.canModifyAnnotations());
-                    permissionsNode.put("CanPrint", ap.canPrint());
-
-                    encryption.set(
-                            "Permissions", permissionsNode); // set the node under "Permissions"
-                }
                 // Add other encryption-related properties as needed
             } else {
                 encryption.put("IsEncrypted", false);
             }
 
+            ObjectNode permissionsNode = objectMapper.createObjectNode();
+            setNodePermissions(pdfBoxDoc, permissionsNode);
+
             ObjectNode pageInfoParent = objectMapper.createObjectNode();
             for (int pageNum = 0; pageNum < pdfBoxDoc.getNumberOfPages(); pageNum++) {
                 ObjectNode pageInfo = objectMapper.createObjectNode();
@@ -584,6 +571,7 @@ public class GetInfoOnPDF {
             jsonOutput.set("DocumentInfo", docInfoNode);
             jsonOutput.set("Compliancy", compliancy);
             jsonOutput.set("Encryption", encryption);
+            jsonOutput.set("Permissions", permissionsNode); // set the node under "Permissions"
             jsonOutput.set("Other", other);
             jsonOutput.set("PerPageInfo", pageInfoParent);
 
@@ -602,6 +590,22 @@ public class GetInfoOnPDF {
         return null;
     }
 
+    private void setNodePermissions(PDDocument pdfBoxDoc, ObjectNode permissionsNode) {
+        AccessPermission ap = pdfBoxDoc.getCurrentAccessPermission();
+
+        permissionsNode.put("Document Assembly", getPermissionState(ap.canAssembleDocument()));
+        permissionsNode.put("Extracting Content", getPermissionState(ap.canExtractContent()));
+        permissionsNode.put("Extracting for accessibility", getPermissionState(ap.canExtractForAccessibility()));
+        permissionsNode.put("Form Filling", getPermissionState(ap.canFillInForm()));
+        permissionsNode.put("Modifying", getPermissionState(ap.canModify()));
+        permissionsNode.put("Modifying annotations", getPermissionState(ap.canModifyAnnotations()));
+        permissionsNode.put("Printing", getPermissionState(ap.canPrint()));
+    }
+
+    private String getPermissionState(boolean state) {
+        return state ? "Allowed" : "Not Allowed";
+    }
+
     private static void addOutlinesToArray(PDOutlineItem outline, ArrayNode arrayNode) {
         if (outline == null) return;
 

src/main/java/stirling/software/SPDF/controller/api/security/ValidateSignatureController.java

@@ -0,0 +1,168 @@
+package stirling.software.SPDF.controller.api.security;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.security.interfaces.RSAPublicKey;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature;
+import org.bouncycastle.cert.X509CertificateHolder;
+import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
+import org.bouncycastle.cms.CMSProcessable;
+import org.bouncycastle.cms.CMSProcessableByteArray;
+import org.bouncycastle.cms.CMSSignedData;
+import org.bouncycastle.cms.SignerInformation;
+import org.bouncycastle.cms.SignerInformationStore;
+import org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoVerifierBuilder;
+import org.bouncycastle.util.Store;
+import org.springframework.beans.factory.annotation.Autowired;
+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.security.SignatureValidationRequest;
+import stirling.software.SPDF.model.api.security.SignatureValidationResult;
+import stirling.software.SPDF.service.CertificateValidationService;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
+
+@RestController
+@RequestMapping("/api/v1/security")
+@Tag(name = "Security", description = "Security APIs")
+public class ValidateSignatureController {
+
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+    private final CertificateValidationService certValidationService;
+
+    @Autowired
+    public ValidateSignatureController(
+            CustomPDDocumentFactory pdfDocumentFactory,
+            CertificateValidationService certValidationService) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+        this.certValidationService = certValidationService;
+    }
+
+    @Operation(
+            summary = "Validate PDF Digital Signature",
+            description =
+                    "Validates the digital signatures in a PDF file against default or custom certificates. Input:PDF Output:JSON Type:SISO")
+    @PostMapping(value = "/validate-signature")
+    public ResponseEntity<List<SignatureValidationResult>> validateSignature(
+            @ModelAttribute SignatureValidationRequest request) throws IOException {
+        List<SignatureValidationResult> results = new ArrayList<>();
+        MultipartFile file = request.getFileInput();
+
+        // Load custom certificate if provided
+        X509Certificate customCert = null;
+        if (request.getCertFile() != null && !request.getCertFile().isEmpty()) {
+            try (ByteArrayInputStream certStream =
+                    new ByteArrayInputStream(request.getCertFile().getBytes())) {
+                CertificateFactory cf = CertificateFactory.getInstance("X.509");
+                customCert = (X509Certificate) cf.generateCertificate(certStream);
+            } catch (CertificateException e) {
+                throw new RuntimeException("Invalid certificate file: " + e.getMessage());
+            }
+        }
+
+        try (PDDocument document = pdfDocumentFactory.load(file.getInputStream())) {
+            List<PDSignature> signatures = document.getSignatureDictionaries();
+
+            for (PDSignature sig : signatures) {
+                SignatureValidationResult result = new SignatureValidationResult();
+
+                try {
+                    byte[] signedContent = sig.getSignedContent(file.getInputStream());
+                    byte[] signatureBytes = sig.getContents(file.getInputStream());
+
+                    CMSProcessable content = new CMSProcessableByteArray(signedContent);
+                    CMSSignedData signedData = new CMSSignedData(content, signatureBytes);
+
+                    Store<X509CertificateHolder> certStore = signedData.getCertificates();
+                    SignerInformationStore signerStore = signedData.getSignerInfos();
+
+                    for (SignerInformation signer : signerStore.getSigners()) {
+                        X509CertificateHolder certHolder = (X509CertificateHolder) certStore.getMatches(signer.getSID()).iterator().next();
+                        X509Certificate cert = new JcaX509CertificateConverter().getCertificate(certHolder);
+
+                        boolean isValid = signer.verify(new JcaSimpleSignerInfoVerifierBuilder().build(cert));
+                        result.setValid(isValid);
+
+                        // Additional validations
+                        result.setChainValid(customCert != null 
+                            ? certValidationService.validateCertificateChainWithCustomCert(cert, customCert)
+                            : certValidationService.validateCertificateChain(cert));
+
+                        result.setTrustValid(customCert != null 
+                            ? certValidationService.validateTrustWithCustomCert(cert, customCert)
+                            : certValidationService.validateTrustStore(cert));
+
+                        result.setNotRevoked(!certValidationService.isRevoked(cert));
+                        result.setNotExpired(!cert.getNotAfter().before(new Date()));
+
+                        // Set basic signature info
+                        result.setSignerName(sig.getName());
+                        result.setSignatureDate(sig.getSignDate().getTime().toString());
+                        result.setReason(sig.getReason());
+                        result.setLocation(sig.getLocation());
+
+                        // Set new certificate details
+                        result.setIssuerDN(cert.getIssuerX500Principal().getName());
+                        result.setSubjectDN(cert.getSubjectX500Principal().getName());
+                        result.setSerialNumber(cert.getSerialNumber().toString(16)); // Hex format
+                        result.setValidFrom(cert.getNotBefore().toString());
+                        result.setValidUntil(cert.getNotAfter().toString());
+                        result.setSignatureAlgorithm(cert.getSigAlgName());
+                        
+                        // Get key size (if possible)
+                        try {
+                            result.setKeySize(((RSAPublicKey) cert.getPublicKey()).getModulus().bitLength());
+                        } catch (Exception e) {
+                            // If not RSA or error, set to 0
+                            result.setKeySize(0);
+                        }
+
+                        result.setVersion(String.valueOf(cert.getVersion()));
+                        
+                        // Set key usage
+                        List<String> keyUsages = new ArrayList<>();
+                        boolean[] keyUsageFlags = cert.getKeyUsage();
+                        if (keyUsageFlags != null) {
+                            String[] keyUsageLabels = {
+                                "Digital Signature", "Non-Repudiation", "Key Encipherment",
+                                "Data Encipherment", "Key Agreement", "Certificate Signing",
+                                "CRL Signing", "Encipher Only", "Decipher Only"
+                            };
+                            for (int i = 0; i < keyUsageFlags.length; i++) {
+                                if (keyUsageFlags[i]) {
+                                    keyUsages.add(keyUsageLabels[i]);
+                                }
+                            }
+                        }
+                        result.setKeyUsages(keyUsages);
+                        
+                        // Check if self-signed
+                        result.setSelfSigned(cert.getSubjectX500Principal().equals(cert.getIssuerX500Principal()));
+                    }
+                } catch (Exception e) {
+                    result.setValid(false);
+                    result.setErrorMessage("Signature validation failed: " + e.getMessage());
+                }
+
+                results.add(result);
+            }
+        }
+
+        return ResponseEntity.ok(results);
+    }
+}

src/main/java/stirling/software/SPDF/controller/web/HomeWebController.java

@@ -55,6 +55,11 @@ public class HomeWebController {
         return "licenses";
     }
 
+    @GetMapping("/releases")
+    public String getReleaseNotes(Model model) {
+        return "releases";
+    }
+
     @GetMapping("/")
     public String home(Model model) {
         model.addAttribute("currentPage", "home");

src/main/java/stirling/software/SPDF/controller/web/SecurityWebController.java

@@ -53,6 +53,13 @@ public class SecurityWebController {
         return "security/cert-sign";
     }
 
+    @GetMapping("/validate-signature")
+    @Hidden
+    public String certSignVerifyForm(Model model) {
+        model.addAttribute("currentPage", "validate-signature");
+        return "security/validate-signature";
+    }
+
     @GetMapping("/remove-cert-sign")
     @Hidden
     public String certUnSignForm(Model model) {

src/main/java/stirling/software/SPDF/model/ApplicationProperties.java

@@ -320,12 +320,20 @@ public class ApplicationProperties {
         public static class SessionLimit {
             private int libreOfficeSessionLimit;
             private int pdfToHtmlSessionLimit;
-            private int ocrMyPdfSessionLimit;
             private int pythonOpenCvSessionLimit;
-            private int ghostScriptSessionLimit;
             private int weasyPrintSessionLimit;
             private int installAppSessionLimit;
             private int calibreSessionLimit;
+            private int qpdfSessionLimit;
+            private int tesseractSessionLimit;
+
+            public int getQpdfSessionLimit() {
+                return qpdfSessionLimit > 0 ? qpdfSessionLimit : 2;
+            }
+
+            public int getTesseractSessionLimit() {
+                return tesseractSessionLimit > 0 ? tesseractSessionLimit : 1;
+            }
 
             public int getLibreOfficeSessionLimit() {
                 return libreOfficeSessionLimit > 0 ? libreOfficeSessionLimit : 1;
@@ -335,18 +343,10 @@ public class ApplicationProperties {
                 return pdfToHtmlSessionLimit > 0 ? pdfToHtmlSessionLimit : 1;
             }
 
-            public int getOcrMyPdfSessionLimit() {
-                return ocrMyPdfSessionLimit > 0 ? ocrMyPdfSessionLimit : 2;
-            }
-
             public int getPythonOpenCvSessionLimit() {
                 return pythonOpenCvSessionLimit > 0 ? pythonOpenCvSessionLimit : 8;
             }
 
-            public int getGhostScriptSessionLimit() {
-                return ghostScriptSessionLimit > 0 ? ghostScriptSessionLimit : 16;
-            }
-
             public int getWeasyPrintSessionLimit() {
                 return weasyPrintSessionLimit > 0 ? weasyPrintSessionLimit : 16;
             }
@@ -364,12 +364,20 @@ public class ApplicationProperties {
         public static class TimeoutMinutes {
             private long libreOfficeTimeoutMinutes;
             private long pdfToHtmlTimeoutMinutes;
-            private long ocrMyPdfTimeoutMinutes;
             private long pythonOpenCvTimeoutMinutes;
-            private long ghostScriptTimeoutMinutes;
             private long weasyPrintTimeoutMinutes;
             private long installAppTimeoutMinutes;
             private long calibreTimeoutMinutes;
+            private long tesseractTimeoutMinutes;
+            private long qpdfTimeoutMinutes;
+
+            public long getTesseractTimeoutMinutes() {
+                return tesseractTimeoutMinutes > 0 ? tesseractTimeoutMinutes : 30;
+            }
+
+            public long getQpdfTimeoutMinutes() {
+                return qpdfTimeoutMinutes > 0 ? qpdfTimeoutMinutes : 30;
+            }
 
             public long getLibreOfficeTimeoutMinutes() {
                 return libreOfficeTimeoutMinutes > 0 ? libreOfficeTimeoutMinutes : 30;
@@ -379,18 +387,10 @@ public class ApplicationProperties {
                 return pdfToHtmlTimeoutMinutes > 0 ? pdfToHtmlTimeoutMinutes : 20;
             }
 
-            public long getOcrMyPdfTimeoutMinutes() {
-                return ocrMyPdfTimeoutMinutes > 0 ? ocrMyPdfTimeoutMinutes : 30;
-            }
-
             public long getPythonOpenCvTimeoutMinutes() {
                 return pythonOpenCvTimeoutMinutes > 0 ? pythonOpenCvTimeoutMinutes : 30;
             }
 
-            public long getGhostScriptTimeoutMinutes() {
-                return ghostScriptTimeoutMinutes > 0 ? ghostScriptTimeoutMinutes : 30;
-            }
-
             public long getWeasyPrintTimeoutMinutes() {
                 return weasyPrintTimeoutMinutes > 0 ? weasyPrintTimeoutMinutes : 30;
             }

src/main/java/stirling/software/SPDF/model/AuthenticationType.java

@@ -2,5 +2,5 @@ package stirling.software.SPDF.model;
 
 public enum AuthenticationType {
     WEB,
-    OAUTH2
+    SSO
 }

src/main/java/stirling/software/SPDF/model/api/misc/OptimizePdfRequest.java

@@ -18,4 +18,15 @@ public class OptimizePdfRequest extends PDFFile {
 
     @Schema(description = "The expected output size, e.g. '100MB', '25KB', etc.")
     private String expectedOutputSize;
+
+    @Schema(
+            description = "Whether to linearize the PDF for faster web viewing. Default is false.",
+            defaultValue = "false")
+    private Boolean linearize = false;
+
+    @Schema(
+            description =
+                    "Whether to normalize the PDF content for better compatibility. Default is true.",
+            defaultValue = "true")
+    private Boolean normalize = true;
 }

src/main/java/stirling/software/SPDF/model/api/misc/ProcessPdfWithOcrRequest.java

@@ -15,18 +15,6 @@ public class ProcessPdfWithOcrRequest extends PDFFile {
     @Schema(description = "List of languages to use in OCR processing")
     private List<String> languages;
 
-    @Schema(description = "Include OCR text in a sidecar text file if set to true")
-    private boolean sidecar;
-
-    @Schema(description = "Deskew the input file if set to true")
-    private boolean deskew;
-
-    @Schema(description = "Clean the input file if set to true")
-    private boolean clean;
-
-    @Schema(description = "Clean the final output if set to true")
-    private boolean cleanFinal;
-
     @Schema(
             description = "Specify the OCR type, e.g., 'skip-text', 'force-ocr', or 'Normal'",
             allowableValues = {"skip-text", "force-ocr", "Normal"})
@@ -37,7 +25,4 @@ public class ProcessPdfWithOcrRequest extends PDFFile {
             allowableValues = {"hocr", "sandwich"},
             defaultValue = "hocr")
     private String ocrRenderType = "hocr";
-
-    @Schema(description = "Remove images from the output PDF if set to true")
-    private boolean removeImagesAfter;
 }

src/main/java/stirling/software/SPDF/model/api/security/SignatureValidationRequest.java

@@ -0,0 +1,17 @@
+package stirling.software.SPDF.model.api.security;
+
+import org.springframework.web.multipart.MultipartFile;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import stirling.software.SPDF.model.api.PDFFile;
+
+@Data
+@EqualsAndHashCode(callSuper = true)
+public class SignatureValidationRequest extends PDFFile {
+
+    @Schema(description = "(Optional) file to compare PDF cert signatures against x.509 format")
+    private MultipartFile certFile;
+}

src/main/java/stirling/software/SPDF/model/api/security/SignatureValidationResult.java

@@ -0,0 +1,31 @@
+package stirling.software.SPDF.model.api.security;
+
+import java.util.List;
+
+import lombok.Data;
+
+@Data
+public class SignatureValidationResult {
+    private boolean valid;
+    private String signerName;
+    private String signatureDate;
+    private String reason;
+    private String location;
+    private String errorMessage;
+    private boolean chainValid;
+    private boolean trustValid;
+    private boolean notExpired;
+    private boolean notRevoked;
+    
+    private String issuerDN;          // Certificate issuer's Distinguished Name
+    private String subjectDN;         // Certificate subject's Distinguished Name
+    private String serialNumber;      // Certificate serial number
+    private String validFrom;         // Certificate validity start date
+    private String validUntil;        // Certificate validity end date
+    private String signatureAlgorithm;// Algorithm used for signing
+    private int keySize;              // Key size in bits
+    private String version;           // Certificate version
+    private List<String> keyUsages;   // List of key usage purposes
+    private boolean isSelfSigned;     // Whether the certificate is self-signed
+    
+}

src/main/java/stirling/software/SPDF/repository/UserRepository.java

@@ -1,5 +1,6 @@
 package stirling.software.SPDF.repository;
 
+import java.util.List;
 import java.util.Optional;
 
 import org.springframework.data.jpa.repository.JpaRepository;
@@ -19,4 +20,6 @@ public interface UserRepository extends JpaRepository<User, Long> {
     Optional<User> findByUsername(String username);
 
     Optional<User> findByApiKey(String apiKey);
+
+    List<User> findByAuthenticationTypeIgnoreCase(String authenticationType);
 }

src/main/java/stirling/software/SPDF/service/CertificateValidationService.java

@@ -0,0 +1,157 @@
+package stirling.software.SPDF.service;
+
+import io.github.pixee.security.BoundedLineReader;
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.cert.CertPath;
+import java.security.cert.CertPathValidator;
+import java.security.cert.CertificateExpiredException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.CertificateNotYetValidException;
+import java.security.cert.PKIXParameters;
+import java.security.cert.TrustAnchor;
+import java.security.cert.X509Certificate;
+import java.util.Arrays;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.stereotype.Service;
+
+import jakarta.annotation.PostConstruct;
+
+@Service
+public class CertificateValidationService {
+    private KeyStore trustStore;
+
+    @PostConstruct
+    private void initializeTrustStore() throws Exception {
+        trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
+        trustStore.load(null, null);
+        loadMozillaCertificates();
+    }
+
+    private void loadMozillaCertificates() throws Exception {
+        try (InputStream is = getClass().getResourceAsStream("/certdata.txt")) {
+            BufferedReader reader = new BufferedReader(new InputStreamReader(is));
+            String line;
+            StringBuilder certData = new StringBuilder();
+            boolean inCert = false;
+            int certCount = 0;
+
+            while ((line = BoundedLineReader.readLine(reader, 5_000_000)) != null) {
+                if (line.startsWith("CKA_VALUE MULTILINE_OCTAL")) {
+                    inCert = true;
+                    certData = new StringBuilder();
+                    continue;
+                }
+                if (inCert) {
+                    if ("END".equals(line)) {
+                        inCert = false;
+                        byte[] certBytes = parseOctalData(certData.toString());
+                        if (certBytes != null) {
+                            CertificateFactory cf = CertificateFactory.getInstance("X.509");
+                            X509Certificate cert =
+                                    (X509Certificate)
+                                            cf.generateCertificate(
+                                                    new ByteArrayInputStream(certBytes));
+                            trustStore.setCertificateEntry("mozilla-cert-" + certCount++, cert);
+                        }
+                    } else {
+                        certData.append(line).append("\n");
+                    }
+                }
+            }
+        }
+    }
+
+    private byte[] parseOctalData(String data) {
+        try {
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            String[] tokens = data.split("\\\\");
+            for (String token : tokens) {
+                token = token.trim();
+                if (!token.isEmpty()) {
+                    baos.write(Integer.parseInt(token, 8));
+                }
+            }
+            return baos.toByteArray();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    public boolean validateCertificateChain(X509Certificate cert) {
+        try {
+            CertPathValidator validator = CertPathValidator.getInstance("PKIX");
+            CertificateFactory cf = CertificateFactory.getInstance("X.509");
+            List<X509Certificate> certList = Arrays.asList(cert);
+            CertPath certPath = cf.generateCertPath(certList);
+
+            Set<TrustAnchor> anchors = new HashSet<>();
+            Enumeration<String> aliases = trustStore.aliases();
+            while (aliases.hasMoreElements()) {
+                Object trustCert = trustStore.getCertificate(aliases.nextElement());
+                if (trustCert instanceof X509Certificate) {
+                    anchors.add(new TrustAnchor((X509Certificate) trustCert, null));
+                }
+            }
+
+            PKIXParameters params = new PKIXParameters(anchors);
+            params.setRevocationEnabled(false);
+            validator.validate(certPath, params);
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    public boolean validateTrustStore(X509Certificate cert) {
+        try {
+            Enumeration<String> aliases = trustStore.aliases();
+            while (aliases.hasMoreElements()) {
+                Object trustCert = trustStore.getCertificate(aliases.nextElement());
+                if (trustCert instanceof X509Certificate && cert.equals(trustCert)) {
+                    return true;
+                }
+            }
+            return false;
+        } catch (KeyStoreException e) {
+            return false;
+        }
+    }
+
+    public boolean isRevoked(X509Certificate cert) {
+        try {
+            cert.checkValidity();
+            return false;
+        } catch (CertificateExpiredException | CertificateNotYetValidException e) {
+            return true;
+        }
+    }
+
+    public boolean validateCertificateChainWithCustomCert(
+            X509Certificate cert, X509Certificate customCert) {
+        try {
+            cert.verify(customCert.getPublicKey());
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    public boolean validateTrustWithCustomCert(X509Certificate cert, X509Certificate customCert) {
+        try {
+            // Compare the issuer of the signature certificate with the custom certificate
+            return cert.getIssuerX500Principal().equals(customCert.getSubjectX500Principal());
+        } catch (Exception e) {
+            return false;
+        }
+    }
+}

src/main/java/stirling/software/SPDF/service/MetricsAggregatorService.java

@@ -24,7 +24,7 @@ public class MetricsAggregatorService {
         this.postHogService = postHogService;
     }
 
-    @Scheduled(fixedRate = 1800000) // Run every 30 minutes
+    @Scheduled(fixedRate = 7200000) // Run every 2 hours
     public void aggregateAndSendMetrics() {
         Map<String, Object> metrics = new HashMap<>();
         Search.in(meterRegistry)
@@ -34,17 +34,22 @@ public class MetricsAggregatorService {
                         counter -> {
                             String method = counter.getId().getTag("method");
                             String uri = counter.getId().getTag("uri");
-                            
+
                             // Skip if either method or uri is null
                             if (method == null || uri == null) {
                                 return;
                             }
-                
-                            String key = String.format(
-                                "http_requests_%s_%s",
-                                method,
-                                uri.replace("/", "_")
-                            );
+                            if (!method.equals("GET") && !method.equals("POST")) {
+                                return;
+                            }
+                            // Skip URIs that are 2 characters or shorter
+                            if (uri.length() <= 2) {
+                                return;
+                            }
+
+                            String key =
+                                    String.format(
+                                            "http_requests_%s_%s", method, uri.replace("/", "_"));
 
                             double currentCount = counter.count();
                             double lastCount = lastSentMetrics.getOrDefault(key, 0.0);

src/main/java/stirling/software/SPDF/service/PdfMetadataService.java

@@ -17,15 +17,18 @@ public class PdfMetadataService {
     private final ApplicationProperties applicationProperties;
     private final String stirlingPDFLabel;
     private final UserServiceInterface userService;
+    private final boolean runningEE;
 
     @Autowired
     public PdfMetadataService(
             ApplicationProperties applicationProperties,
             @Qualifier("StirlingPDFLabel") String stirlingPDFLabel,
+            @Qualifier("runningEE") boolean runningEE,
             @Autowired(required = false) UserServiceInterface userService) {
         this.applicationProperties = applicationProperties;
         this.stirlingPDFLabel = stirlingPDFLabel;
         this.userService = userService;
+        this.runningEE = runningEE;
     }
 
     public PdfMetadata extractMetadataFromPdf(PDDocument pdf) {
@@ -61,10 +64,8 @@ public class PdfMetadataService {
 
         String creator = stirlingPDFLabel;
 
-        if (applicationProperties
-                .getEnterpriseEdition()
-                .getCustomMetadata()
-                .isAutoUpdateMetadata()) {
+        if (applicationProperties.getEnterpriseEdition().getCustomMetadata().isAutoUpdateMetadata()
+                && runningEE) {
 
             creator = applicationProperties.getEnterpriseEdition().getCustomMetadata().getCreator();
             pdf.getDocumentInformation().setProducer(stirlingPDFLabel);
@@ -83,10 +84,8 @@ public class PdfMetadataService {
         pdf.getDocumentInformation().setModificationDate(Calendar.getInstance());
 
         String author = pdfMetadata.getAuthor();
-        if (applicationProperties
-                .getEnterpriseEdition()
-                .getCustomMetadata()
-                .isAutoUpdateMetadata()) {
+        if (applicationProperties.getEnterpriseEdition().getCustomMetadata().isAutoUpdateMetadata()
+                && runningEE) {
             author = applicationProperties.getEnterpriseEdition().getCustomMetadata().getAuthor();
 
             if (userService != null) {

src/main/java/stirling/software/SPDF/service/PostHogService.java

@@ -31,7 +31,7 @@ public class PostHogService {
     private final ApplicationProperties applicationProperties;
     private final UserServiceInterface userService;
     private final Environment env;
-    
+
     @Autowired
     public PostHogService(
             PostHog postHog,
@@ -71,16 +71,16 @@ public class PostHogService {
         Map<String, Object> metrics = new HashMap<>();
 
         try {
-        	//Application version
-        	metrics.put("app_version", appVersion);
-        	 String deploymentType = "JAR"; // default
-             if ("true".equalsIgnoreCase(env.getProperty("BROWSER_OPEN"))) {
-                 deploymentType = "EXE";
-             } else if (isRunningInDocker()) {
-                 deploymentType = "DOCKER";
-             }
-             metrics.put("deployment_type", deploymentType);
-        	
+            // Application version
+            metrics.put("app_version", appVersion);
+            String deploymentType = "JAR"; // default
+            if ("true".equalsIgnoreCase(env.getProperty("BROWSER_OPEN"))) {
+                deploymentType = "EXE";
+            } else if (isRunningInDocker()) {
+                deploymentType = "DOCKER";
+            }
+            metrics.put("deployment_type", deploymentType);
+
             // System info
             metrics.put("os_name", System.getProperty("os.name"));
             metrics.put("os_version", System.getProperty("os.version"));

src/main/java/stirling/software/SPDF/utils/FileToPdf.java

@@ -105,7 +105,7 @@ public class FileToPdf {
                         new ByteArrayInputStream(Files.readAllBytes(zipFilePath)))) {
             ZipEntry entry = zipIn.getNextEntry();
             while (entry != null) {
-                Path filePath = tempUnzippedDir.resolve(entry.getName());
+                Path filePath = tempUnzippedDir.resolve(sanitizeZipFilename(entry.getName()));
                 if (!entry.isDirectory()) {
                     Files.createDirectories(filePath.getParent());
                     if (entry.getName().toLowerCase().endsWith(".html")
@@ -175,7 +175,7 @@ public class FileToPdf {
                 ZipSecurity.createHardenedInputStream(new ByteArrayInputStream(fileBytes))) {
             ZipEntry entry = zipIn.getNextEntry();
             while (entry != null) {
-                Path filePath = tempDirectory.resolve(entry.getName());
+                Path filePath = tempDirectory.resolve(sanitizeZipFilename(entry.getName()));
                 if (entry.isDirectory()) {
                     Files.createDirectories(filePath); // Explicitly create the directory structure
                 } else {
@@ -241,4 +241,14 @@ public class FileToPdf {
             Files.deleteIfExists(tempOutputFile);
         }
     }
+
+    static String sanitizeZipFilename(String entryName) {
+        if (entryName == null || entryName.trim().isEmpty()) {
+            return entryName;
+        }
+        while (entryName.contains("../") || entryName.contains("..\\")) {
+            entryName = entryName.replace("../", "").replace("..\\", "");
+        }
+        return entryName;
+    }
 }

src/main/java/stirling/software/SPDF/utils/ProcessExecutor.java

@@ -29,12 +29,12 @@ public class ProcessExecutor {
     public enum Processes {
         LIBRE_OFFICE,
         PDFTOHTML,
-        OCR_MY_PDF,
         PYTHON_OPENCV,
-        GHOSTSCRIPT,
         WEASYPRINT,
         INSTALL_APP,
-        CALIBRE
+        CALIBRE,
+        TESSERACT,
+        QPDF
     }
 
     private static final Map<Processes, ProcessExecutor> instances = new ConcurrentHashMap<>();
@@ -59,21 +59,11 @@ public class ProcessExecutor {
                                                 .getProcessExecutor()
                                                 .getSessionLimit()
                                                 .getPdfToHtmlSessionLimit();
-                                case OCR_MY_PDF ->
-                                        applicationProperties
-                                                .getProcessExecutor()
-                                                .getSessionLimit()
-                                                .getOcrMyPdfSessionLimit();
                                 case PYTHON_OPENCV ->
                                         applicationProperties
                                                 .getProcessExecutor()
                                                 .getSessionLimit()
                                                 .getPythonOpenCvSessionLimit();
-                                case GHOSTSCRIPT ->
-                                        applicationProperties
-                                                .getProcessExecutor()
-                                                .getSessionLimit()
-                                                .getGhostScriptSessionLimit();
                                 case WEASYPRINT ->
                                         applicationProperties
                                                 .getProcessExecutor()
@@ -84,6 +74,16 @@ public class ProcessExecutor {
                                                 .getProcessExecutor()
                                                 .getSessionLimit()
                                                 .getInstallAppSessionLimit();
+                                case TESSERACT ->
+                                        applicationProperties
+                                                .getProcessExecutor()
+                                                .getSessionLimit()
+                                                .getTesseractSessionLimit();
+                                case QPDF ->
+                                        applicationProperties
+                                                .getProcessExecutor()
+                                                .getSessionLimit()
+                                                .getQpdfSessionLimit();
                                 case CALIBRE ->
                                         applicationProperties
                                                 .getProcessExecutor()
@@ -103,21 +103,11 @@ public class ProcessExecutor {
                                                 .getProcessExecutor()
                                                 .getTimeoutMinutes()
                                                 .getPdfToHtmlTimeoutMinutes();
-                                case OCR_MY_PDF ->
-                                        applicationProperties
-                                                .getProcessExecutor()
-                                                .getTimeoutMinutes()
-                                                .getOcrMyPdfTimeoutMinutes();
                                 case PYTHON_OPENCV ->
                                         applicationProperties
                                                 .getProcessExecutor()
                                                 .getTimeoutMinutes()
                                                 .getPythonOpenCvTimeoutMinutes();
-                                case GHOSTSCRIPT ->
-                                        applicationProperties
-                                                .getProcessExecutor()
-                                                .getTimeoutMinutes()
-                                                .getGhostScriptTimeoutMinutes();
                                 case WEASYPRINT ->
                                         applicationProperties
                                                 .getProcessExecutor()
@@ -128,6 +118,16 @@ public class ProcessExecutor {
                                                 .getProcessExecutor()
                                                 .getTimeoutMinutes()
                                                 .getInstallAppTimeoutMinutes();
+                                case TESSERACT ->
+                                        applicationProperties
+                                                .getProcessExecutor()
+                                                .getTimeoutMinutes()
+                                                .getTesseractTimeoutMinutes();
+                                case QPDF ->
+                                        applicationProperties
+                                                .getProcessExecutor()
+                                                .getTimeoutMinutes()
+                                                .getQpdfTimeoutMinutes();
                                 case CALIBRE ->
                                         applicationProperties
                                                 .getProcessExecutor()

src/main/java/stirling/software/SPDF/utils/propertyeditor/StringToMapPropertyEditor.java

@@ -0,0 +1,26 @@
+package stirling.software.SPDF.utils.propertyeditor;
+
+import java.beans.PropertyEditorSupport;
+import java.util.HashMap;
+import java.util.Map;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class StringToMapPropertyEditor extends PropertyEditorSupport {
+
+    private final ObjectMapper objectMapper = new ObjectMapper();
+
+    @Override
+    public void setAsText(String text) throws IllegalArgumentException {
+        try {
+            TypeReference<HashMap<String, String>> typeRef =
+                    new TypeReference<HashMap<String, String>>() {};
+            Map<String, String> map = objectMapper.readValue(text, typeRef);
+            setValue(map);
+        } catch (Exception e) {
+            throw new IllegalArgumentException(
+                    "Failed to convert java.lang.String to java.util.Map");
+        }
+    }
+}

src/main/resources/application.properties

@@ -3,6 +3,10 @@ multipart.enabled=true
 logging.level.org.springframework=WARN
 logging.level.org.hibernate=WARN
 logging.level.org.eclipse.jetty=WARN
+#logging.level.org.springframework.security.saml2=TRACE
+#logging.level.org.springframework.security=DEBUG
+#logging.level.org.opensaml=DEBUG
+#logging.level.stirling.software.SPDF.config.security: DEBUG
 logging.level.com.zaxxer.hikari=WARN
 
 spring.jpa.open-in-view=false
@@ -27,6 +31,8 @@ server.servlet.context-path=${SYSTEM_ROOTURIPATH:/}
 
 spring.devtools.restart.enabled=true
 spring.devtools.livereload.enabled=true
+spring.devtools.restart.exclude=stirling.software.SPDF.config.security/**
+
 spring.thymeleaf.encoding=UTF-8
 
 spring.web.resources.mime-mappings.webmanifest=application/manifest+json

src/main/resources/messages_ar_AR.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=تجزئة المستندات PDF حسب الفص
 home.splitPdfByChapters.desc=قسم مستند PDF إلى ملفات متعددة بناءً على هيكل فصوله.
 splitPdfByChapters.tags=تجزئة، فصول، علامات تبويب، تنظيم
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=إستبدال-عكس اللون
 replace-color.header=استبدال-عكس لون PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=وضع التعرف الضوئي على الحروف
 ocr.selectText.11=إزالة الصور بعد التعرف الضوئي على الحروف (يزيل كل الصور، يكون مفيدًا فقط إذا كان جزءًا من خطوة التحويل)
 ocr.selectText.12=نوع العرض (متقدم)
 ocr.help=يرجى قراءة هذه الوثائق حول كيفية استخدام هذا للغات أخرى و/أو الاستخدام ليس في Docker
-ocr.credit=تستخدم هذه الخدمة OCRmyPDF و Tesseract للتعرف الضوئي على الحروف.
+ocr.credit=تستخدم هذه الخدمة qpdf و Tesseract للتعرف الضوئي على الحروف.
 ocr.submit=معالجة PDF باستخدام OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=تحويل إلى PDF
 #compress
 compress.title=ضغط
 compress.header=ضغط ملف PDF
-compress.credit=تستخدم هذه الخدمة OCRmyPDF لضغط / تحسين PDF.
+compress.credit=تستخدم هذه الخدمة qpdf لضغط / تحسين PDF.
 compress.selectText.1=الوضع اليدوي - من 1 إلى 4
 compress.selectText.2=مستوى التحسين:
 compress.selectText.3=4 (رهيب للصور النصية)
@@ -958,6 +962,8 @@ multiTool.moveLeft=تحريك إلى اليسار
 multiTool.moveRight=تحريك إلى اليمين
 multiTool.delete=حذف
 multiTool.dragDropMessage=الصفحات المحددة
+multiTool.undo=تراجع
+multiTool.redo=إعادة إجراء
 
 #multiTool-advert
 multiTool-advert.message=هذه الميزة متوفرة في <a href="{0}">صفحة الأدوات المتعددة</a> لدينا. اطلع عليها للحصول على واجهة مستخدم محسّنة لكل صفحة وميزات إضافية!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=تغيير
 #pdfToPDFA
 pdfToPDFA.title=PDF إلى PDF/A
 pdfToPDFA.header=PDF إلى PDF/A
-pdfToPDFA.credit=تستخدم هذه الخدمة ghostscript لتحويل PDF/A.
+pdfToPDFA.credit=تستخدم هذه الخدمة qpdf لتحويل PDF/A.
 pdfToPDFA.submit=تحويل
 pdfToPDFA.tip=لا يعمل حاليًا لمدخلات متعددة في وقت واحد
 pdfToPDFA.outputFormat=تنسيق الإخراج
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=مستوى الإشارة المرجعية: اختر مس
 splitByChapters.desc.3=تمثيل البيانات الأصلية: إذا تم اختيارها، سترمز البيانات المرجعية الأصلية إلى كل PDF مجزأ.
 splitByChapters.desc.4=سماح بالتكرار: إذا تم اختياره، يسمح بوجود معاينات متعددة في الصفحة نفسها لخلق ملفات PDF منفصلة.
 splitByChapters.submit=تقطيع ملف PDF
+
+#File Chooser
+fileChooser.click=انقر هنا
+fileChooser.or=أو
+fileChooser.dragAndDrop=قم بسحب الملفات وإفلاتها
+fileChooser.hoveredDragAndDrop=قم بسحب المفات وإفلاتها هنا
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_az_AZ.properties

@@ -34,10 +34,10 @@ sizes.small=Kiçik
 sizes.medium=Orta
 sizes.large=Böyük
 sizes.x-large=Ekstra Böyük
-error.pdfPassword=PDF sənədi şifrələnmişdir və şifrə təmin edilməmişdir və ya yanlışdır.
+error.pdfPassword=PDF sənədi şifrlənmişdir və şifr təmin edilməmişdir və ya yanlışdır.
 delete=Sil
 username=İstifadəçi Adı
-password=Şifrə
+password=Şifr
 welcome=Xoş gəldiniz
 property=Xüsusiyyət
 black=Qara
@@ -53,11 +53,11 @@ no=Xeyr
 changedCredsMessage=Etibarnamələr dəyişdirildi!
 notAuthenticatedMessage=İstifadəçinin kimliyi təsdiqlənməyib.
 userNotFoundMessage=İstifadəçi tapılmadı.
-incorrectPasswordMessage=Cari şifrə yanlışdır.
+incorrectPasswordMessage=Cari şifr yanlışdır.
 usernameExistsMessage=İstifadəçi adı mövcuddur.
 invalidUsernameMessage=Yanlış istifadəçi adı, istifadəçi adı sadəcə hərflərdən, rəqəmlərdən və @._+- xüsusi simvollarından ibarət ola bilər və ya düzgün email ünvanı olmalıdır.
-invalidPasswordMessage=Şifrə boş olmamalıdır, başlanğıc və sonunda boşluqdan istifadə edilməməlidir.
-confirmPasswordErrorMessage=Yeni Şifrə və Yeni Şifrəni Doğrula uyğun olmalıdır.
+invalidPasswordMessage=Şifr boş olmamalıdır, başlanğıc və sonunda boşluqdan istifadə edilməməlidir.
+confirmPasswordErrorMessage=Yeni Şifr və Yeni Şifri Doğrula uyğun olmalıdır.
 deleteCurrentUserMessage=Hazırda daxil olmuş istifadəçini silmək mümkün deyil.
 deleteUsernameExistsMessage=İstifadəçi adı mövcud deyildir və silinə bilməz.
 downgradeCurrentUserMessage=Cari istifadəçinin rolunu aşağı salmaq mümkün deyil
@@ -70,8 +70,8 @@ oops=Oops!
 help=Yardım
 goHomepage=Ana səhifəyə get
 joinDiscord=Discord serverimizə qatıl
-seeDockerHub=Docker Hub'a bax
-visitGithub=Github Repository'ə Baş Çək
+seeDockerHub=Docker Hub-a bax
+visitGithub=Github Repository-ə Baş Çək
 donate=İanə Ver
 color=Rəng
 sponsor=Sponsor
@@ -126,9 +126,9 @@ enterpriseEdition.ssoAdvert=Daha çox istifadəçi-idarəetmə xüsusiyyətləri
 #################
 #  Analytics    #
 #################
-analytics.title=Stirling PDF'i daha yaxşı etmək istəyirsinizmi?
+analytics.title=Stirling PDF-i daha yaxşı etmək istəyirsinizmi?
 analytics.paragraph1=Stirling PDF bizə məhsulu inkişaf etdirməyə kömək etmək üçün analitikaya üstünlük verib. Biz heç bir şəxsi məlumatı və ya fayl məzmununu izləmirik.
-analytics.paragraph2=Zəhmət olmasa, Stringling-PDF'ə inkişaf etməkdə və istifadəçilərimizi daha yaxşı anlamaqda yardım etmək üçün analitikanı aktivləşdirməyi nəzərə alın.
+analytics.paragraph2=Zəhmət olmasa, Stringling-PDF-ə inkişaf etməkdə və istifadəçilərimizi daha yaxşı anlamaqda yardım etmək üçün analitikanı aktivləşdirməyi nəzərə alın.
 analytics.enable=Analitikanı aktivləşdir
 analytics.disable=Analitikanı deaktivləşdir
 analytics.settings=Analitikanın parametrlərini config/settings.yml faylından dəyişə bilərsiniz.
@@ -141,11 +141,11 @@ navbar.darkmode=Qaranlıq Tema
 navbar.language=Dillər
 navbar.settings=Parametrlər
 navbar.allTools=Alətlər
-navbar.multiTool=Çox Alət
+navbar.multiTool=Multi-Alət
 navbar.search=Axtar
 navbar.sections.organize=Təşkil et
-navbar.sections.convertTo=PDF'ə Çevir
-navbar.sections.convertFrom=PDF'dən Çevir
+navbar.sections.convertTo=PDF-ə Çevir
+navbar.sections.convertFrom=PDF-dən Çevir
 navbar.sections.security=İmza & Təhlükəsizlik
 navbar.sections.advance=Qabaqcıl
 navbar.sections.edit=Bax & Redaktə et
@@ -171,11 +171,11 @@ settings.cacheInputs.help=Gələcək əməliyyatlar üçün əvvəllər istifad
 
 changeCreds.title=Məlumatları dəyişdirin
 changeCreds.header=Hesab Məlumatlarınızı Yeniləyin
-changeCreds.changePassword=Siz standart giriş məlumatlarından istifadə edirsiniz. Zəhmət olmasa, yeni şifrə daxil edin
+changeCreds.changePassword=Siz standart giriş məlumatlarından istifadə edirsiniz. Zəhmət olmasa, yeni şifr daxil edin
 changeCreds.newUsername=Yeni İstifadəçi Adı
-changeCreds.oldPassword=Cari Şifrə
-changeCreds.newPassword=Yeni Şifrə
-changeCreds.confirmNewPassword=Yeni Şifrəni Təsdiqləyin
+changeCreds.oldPassword=Cari Şifr
+changeCreds.newPassword=Yeni Şifr
+changeCreds.confirmNewPassword=Yeni Şifri Təsdiqləyin
 changeCreds.submit=Dəyişiklikləri Təsdiqlə
 
 
@@ -186,11 +186,11 @@ account.adminSettings=Admin Paramterləri - İstifadəçilər Əlavə Et və Onl
 account.userControlSettings=İstifadəçi İdarəetmə Parametrləri
 account.changeUsername=İstifadəçi Adını Dəyiş
 account.newUsername=Yeni İstifadəçi Adı
-account.password=Təsdiqləmə Şifrəsi
-account.oldPassword=Keçmiş Şifrə
-account.newPassword=Yeni Şifrə
-account.changePassword=Şifrəni Dəyiş
-account.confirmNewPassword=Yeni Şifrəni Təsdiqlə
+account.password=Təsdiqləmə Şifri
+account.oldPassword=Keçmiş Şifr
+account.newPassword=Yeni Şifr
+account.changePassword=Şifri Dəyiş
+account.confirmNewPassword=Yeni Şifri Təsdiqlə
 account.signOut=Çıxış
 account.yourApiKey=Sizin API Açarınız
 account.syncTitle=Brauzer parametrlərini hesabla sinxronlaşdırın
@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=PDF-i Fəsillərə Əsasən Böl
 home.splitPdfByChapters.desc=Fəsil strukturuna əsasən PDF-i bir neçə fayla böl.
 splitPdfByChapters.tags=böl,fəsillər,əlfəcinlər,nizamla
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Qabaqcıl Rəng Seçimləri
 replace-color.header=PDF-də Rəngləri Dəyiş-Tərsinə Çevir
@@ -543,7 +547,7 @@ login.title=Daxil olun
 login.header=Daxil olun
 login.signin=Daxil olun
 login.rememberme=Məni xatırla
-login.invalid=Etibarsız istifadəçi adı və ya şifrə.
+login.invalid=Etibarsız istifadəçi adı və ya şifr.
 login.locked=Sizin hesabınız kilidlənmişdir.
 login.signinTitle=Zəhmət olmasa, daxil olun
 login.ssoSignIn=Single Sign-on vasitəsilə daxil olun
@@ -581,8 +585,8 @@ showJS.submit=Göstər
 
 
 #pdfToSinglePage
-pdfToSinglePage.title=PDF'dən Tək Səhifəyə
-pdfToSinglePage.header=PDF'dən Tək Səhifəyə
+pdfToSinglePage.title=PDF-dən Tək Səhifəyə
+pdfToSinglePage.header=PDF-dən Tək Səhifəyə
 pdfToSinglePage.submit=Tək Səhifəyə Çevir
 
 
@@ -601,8 +605,8 @@ getPdfInfo.downloadJson=JSON yüklə
 
 
 #markdown-to-pdf
-MarkdownToPDF.title=Markdown'dan PDF'ə
-MarkdownToPDF.header=Markdown'dan PDF'ə
+MarkdownToPDF.title=Markdown-dan PDF-ə
+MarkdownToPDF.header=Markdown-dan PDF-ə
 MarkdownToPDF.submit=Çevir
 MarkdownToPDF.help=İş davam edir
 MarkdownToPDF.credit=WeasyPrint İstifadə Edir
@@ -617,8 +621,8 @@ URLToPDF.credit=WeasyPrint İstifadə Edir
 
 
 #html-to-pdf
-HTMLToPDF.title=HTML'dən PDF'ə
-HTMLToPDF.header=HTML'dən PDF'ə
+HTMLToPDF.title=HTML-dən PDF-ə
+HTMLToPDF.header=HTML-dən PDF-ə
 HTMLToPDF.help=HTML fayllarını və tərkibində mütləq html/css/images və s. olan ZIP fayllarını qəbul edir
 HTMLToPDF.submit=Çevir
 HTMLToPDF.credit=WeasyPrint İstifadə Edir
@@ -656,14 +660,14 @@ AddStampRequest.submit=Təsdiqlə
 
 
 #sanitizePDF
-sanitizePDF.title=PDF'i Təmizlə
+sanitizePDF.title=PDF-i Təmizlə
 sanitizePDF.header=PDF Faylını Təmizlə
 sanitizePDF.selectText.1=JavaScript Fəaliyyətlərini Sil
 sanitizePDF.selectText.2=Daxil Edilmiş Faylları Sil
 sanitizePDF.selectText.3=Metadatanı Sil
 sanitizePDF.selectText.4=Linkləri Sil
 sanitizePDF.selectText.5=Şriftləri Sil
-sanitizePDF.submit=PDF'i Təmizlə
+sanitizePDF.submit=PDF-i Təmizlə
 
 
 #addPageNumbers
@@ -683,7 +687,7 @@ addPageNumbers.submit=Səhifə Nömrələri əlavə edin
 
 #auto-rename
 auto-rename.title=Avtomatik Yenidən Adlandır
-auto-rename.header=Pdf'in Adını Avtomatik Yenidən Adlandır
+auto-rename.header=Pdf-in Adını Avtomatik Yenidən Adlandır
 auto-rename.submit=Avtomatik Yenidən Adlandır
 
 
@@ -698,7 +702,7 @@ adjustContrast.download=Yüklə
 
 #crop
 crop.title=Kəs
-crop.header=Pdf'ləri Kəs
+crop.header=Pdf-ləri Kəs
 crop.submit=Təsdiq Et
 
 
@@ -722,8 +726,8 @@ pipeline.title=Pipeline
 
 
 #pageLayout
-pageLayout.title=Çoxsəhifəli Sxem
-pageLayout.header=Çoxsəhifəli Sxem
+pageLayout.title=Çoxsəhifəli Tərtibat
+pageLayout.header=Çoxsəhifəli Tərtibat
 pageLayout.pagesPerSheet=Vərəqdəki Səhifə Sayı:
 pageLayout.addBorder=Çərçivə Əlavə Et
 pageLayout.submit=Təsdiq et
@@ -739,22 +743,22 @@ scalePages.submit=Təsdiq edin
 
 
 #certSign
-certSign.title=Certificate Signing
-certSign.header=Sign a PDF with your certificate (Work in progress)
-certSign.selectPDF=Select a PDF File for Signing:
-certSign.jksNote=Note: If your certificate type is not listed below, please convert it to a Java Keystore (.jks) file using the keytool command line tool. Then, choose the .jks file option below.
-certSign.selectKey=Select Your Private Key File (PKCS#8 format, could be .pem or .der):
-certSign.selectCert=Select Your Certificate File (X.509 format, could be .pem or .der):
-certSign.selectP12=Select Your PKCS#12 Keystore File (.p12 or .pfx) (Optional, If provided, it should contain your private key and certificate):
-certSign.selectJKS=Select Your Java Keystore File (.jks or .keystore):
-certSign.certType=Certificate Type
-certSign.password=Enter Your Keystore or Private Key Password (If Any):
-certSign.showSig=Show Signature
-certSign.reason=Reason
-certSign.location=Location
-certSign.name=Name
-certSign.showLogo=Show Logo
-certSign.submit=Sign PDF
+certSign.title=Sertifikatla İmzala
+certSign.header=PDF-i Sertifikatınızla İmzalayın (İşlənilir)
+certSign.selectPDF=İmzalamaq üçün PDF Faylı seçin:
+certSign.jksNote=Note: Əgər sertifikatınızın tipi aşağıda göstərilməyibsə, zəhmət olmasa "Keytool command line tool" istifadə edərək onu "Java Keystroke" (.jks) faylına çevirin. Sonra, aşağıdan .jks faylını seçin.
+certSign.selectKey=Şəxsi Açar faylınızı seçin (PKCS#8 format, .pem və ya .der ola bilər):
+certSign.selectCert=Sertifikat faylınızı seçin (X.509 format, .pem və ya .der ola bilər):
+certSign.selectP12=PKCS#12 Keystore Faylınızı seçin (.p12 və ya .pfx) (İstəyə bağlı, əgər təmin olunarsa, şəxsi açar və sertifikatınızı ehtiva etməlidir):
+certSign.selectJKS=Java Keystore Faylınızı seçin (.jks və ya .keystore):
+certSign.certType=Sertifikat Tipi
+certSign.password=Keystore və ya Şəxsi Açar daxil edin (Əgər varsa):
+certSign.showSig=İmzanı Göstər
+certSign.reason=Səbəb
+certSign.location=Məkan
+certSign.name=Ad
+certSign.showLogo=Loqonu Göstər
+certSign.submit=PDF-i İmzala
 
 
 #removeCertSign
@@ -765,13 +769,13 @@ removeCertSign.submit=İmzanı silin
 
 
 #removeBlanks
-removeBlanks.title=Remove Blanks
-removeBlanks.header=Remove Blank Pages
-removeBlanks.threshold=Pixel Whiteness Threshold:
-removeBlanks.thresholdDesc=Threshold for determining how white a white pixel must be to be classed as 'White'. 0 = Black, 255 pure white.
-removeBlanks.whitePercent=White Percent (%):
-removeBlanks.whitePercentDesc=Percent of page that must be 'white' pixels to be removed
-removeBlanks.submit=Remove Blanks
+removeBlanks.title=Boş Səhifələri Sil
+removeBlanks.header=Boş SƏhifələri Silir
+removeBlanks.threshold=Minimal Piksel Bəyazlığı:
+removeBlanks.thresholdDesc=Pikselin "Ağ" hesab olunması üçün minimal nə qədər bəyaz olmalı olduğunu təyin edin. 0 = Qara, 255 Ağappaq.
+removeBlanks.whitePercent=Bəyaz Faizi (%):
+removeBlanks.whitePercentDesc=Silinmək üçün səhifənin neçə faizi "ağ" piksellərdən təşkil olunmalıdır
+removeBlanks.submit=Boş Səhifələri Sil
 
 
 #removeAnnotations
@@ -781,16 +785,16 @@ removeAnnotations.submit=Sil
 
 
 #compare
-compare.title=Compare
-compare.header=Compare PDFs
-compare.highlightColor.1=Highlight Color 1:
-compare.highlightColor.2=Highlight Color 2:
-compare.document.1=Document 1
-compare.document.2=Document 2
-compare.submit=Compare
-compare.complex.message=One or both of the provided documents are large files, accuracy of comparison may be reduced
-compare.large.file.message=One or Both of the provided documents are too large to process
-compare.no.text.message=One or both of the selected PDFs have no text content. Please choose PDFs with text for comparison.
+compare.title=Müqayisə Et
+compare.header=PDF-ləri Müqayisə Et
+compare.highlightColor.1=Önə Çıxarma Rəngi 1:
+compare.highlightColor.2=Önə Çıxarma Rəngi 2:
+compare.document.1=Sənəd 1
+compare.document.2=Sənəd 2
+compare.submit=Müqayisə Et
+compare.complex.message=Fayllardan biri və ya ikisi də böyük fayldır. Müqayisə effektivliyi azala bilər.
+compare.large.file.message=Fayllardan biri və ya ikisi də işləmək üçün çox böyükdür.
+compare.no.text.message=Fayllardan birində və ya ikisində də mətn məzmunu yoxdur. Zəhmət olmasa, müqayisə üçün mətn məzmunlu PDF seçin.
 
 #BookToPDF
 BookToPDF.title=Kitabları və Komiksləri PDF-ə
@@ -818,12 +822,12 @@ sign.save=İmzanı yadda Saxla
 sign.personalSigs=Şəxsi İmzalar
 sign.sharedSigs=Paylaşılan İmzalar
 sign.noSavedSigs=Saxlanmış imza tapılmadı
-sign.addToAll=Add to all pages
-sign.delete=Delete
-sign.first=First page
-sign.last=Last page
-sign.next=Next page
-sign.previous=Previous page
+sign.addToAll=Bütün səhiflərə əlavə et
+sign.delete=Sil
+sign.first=İlk səhifə
+sign.last=Son səhifə
+sign.next=Növbəti səhifə
+sign.previous=Əvvəlki səhifə
 
 #repair
 repair.title=Bərpa Et
@@ -839,37 +843,37 @@ flatten.submit=Düzləşdirin
 
 
 #ScannerImageSplit
-ScannerImageSplit.selectText.1=Angle Threshold:
-ScannerImageSplit.selectText.2=Sets the minimum absolute angle required for the image to be rotated (default: 10).
-ScannerImageSplit.selectText.3=Tolerance:
-ScannerImageSplit.selectText.4=Determines the range of color variation around the estimated background color (default: 30).
-ScannerImageSplit.selectText.5=Minimum Area:
-ScannerImageSplit.selectText.6=Sets the minimum area threshold for a photo (default: 10000).
-ScannerImageSplit.selectText.7=Minimum Contour Area:
-ScannerImageSplit.selectText.8=Sets the minimum contour area threshold for a photo
-ScannerImageSplit.selectText.9=Border Size:
-ScannerImageSplit.selectText.10=Sets the size of the border added and removed to prevent white borders in the output (default: 1).
-ScannerImageSplit.info=Python is not installed. It is required to run.
+ScannerImageSplit.selectText.1=Bucaq Aşağı Limiti:
+ScannerImageSplit.selectText.2=Şəklin fırladılması üçün lazım olan minimal mütləq bucağı təyin edir (defolt: 10).
+ScannerImageSplit.selectText.3=Rəng Toleransı:
+ScannerImageSplit.selectText.4=Təxmin olunan arxaplan rənginin ətrafındakı rəng fərqliliyi intervalını təyin edir (defolt: 30).
+ScannerImageSplit.selectText.5=Minimal Sahə:
+ScannerImageSplit.selectText.6=Foto üçün minimal sahənin aşağı limitini təyin edir (defolt: 10000).
+ScannerImageSplit.selectText.7=Minimal Kontur Sahəsi:
+ScannerImageSplit.selectText.8=Fotonun kontur sahəsi üçün minimal aşağı limiti təyin edir
+ScannerImageSplit.selectText.9=Sərhəd Ölçüsü:
+ScannerImageSplit.selectText.10=Faylda ağ sərhədlərin olmasının qarşısını almaq üçün əlavə ediləcək sərhədin ölçüsünü təyin edir (defolt: 1).
+ScannerImageSplit.info=Python yüklənməyib. İşə salmaq üçün Python lazımdır.
 
 
 #OCR
-ocr.title=OCR / Scan Cleanup
-ocr.header=Cleanup Scans / OCR (Optical Character Recognition)
-ocr.selectText.1=Select languages that are to be detected within the PDF (Ones listed are the ones currently detected):
-ocr.selectText.2=Produce text file containing OCR text alongside the OCR'ed PDF
-ocr.selectText.3=Correct pages were scanned at a skewed angle by rotating them back into place
-ocr.selectText.4=Clean page so its less likely that OCR will find text in background noise. (No output change)
-ocr.selectText.5=Clean page so its less likely that OCR will find text in background noise, maintains cleanup in output.
-ocr.selectText.6=Ignores pages that have interactive text on them, only OCRs pages that are images
-ocr.selectText.7=Force OCR, will OCR Every page removing all original text elements
-ocr.selectText.8=Normal (Will error if PDF contains text)
-ocr.selectText.9=Additional Settings
-ocr.selectText.10=OCR Mode
-ocr.selectText.11=Remove images after OCR (Removes ALL images, only useful if part of conversion step)
-ocr.selectText.12=Render Type (Advanced)
-ocr.help=Please read this documentation on how to use this for other languages and/or use not in docker
-ocr.credit=This service uses OCRmyPDF and Tesseract for OCR.
-ocr.submit=Process PDF with OCR
+ocr.title=OST (OCR) / Skan Təmizləmə
+ocr.header=Skanları Təmizlə / OST (Optik Simvol Tanınması)
+ocr.selectText.1=PDF-də aşkar olunacaq dilləri seçin (Göstərilmiş dillər hazırda aşkar olunmuşlardır):
+ocr.selectText.2=OST-lənmiş PDF ilə yanaşı daxilində OST edilmiş mətn olan PDF yaradın
+ocr.selectText.3=Əyri skan olunmuş səhifələri yerinə fırladaraq düzəldin
+ocr.selectText.4=OST-in arxaplandakı artıq mətni aşkar etməsinin qarşısını almaq üçün səhifəni təmizləyin. (Çıxış dəyişmir)
+ocr.selectText.5=OST-in arxaplandakı artıq mətni aşkar etməsinin qarşısını almaq üçün səhifəni təmizləyin, təmizləməni çıxışa verilən faylda saxlayır.
+ocr.selectText.6=Üzərində interaktiv yazı olan səhifələri nəzərə almır, yalnız şəkil olan səhifələri OST edir.
+ocr.selectText.7=OST-ə məcbur et, bütün orijinal mətn elementlərini silərək hər səhifəni OST edir
+ocr.selectText.8=Normal (PDF-də mətn varsa, xəta verəcək)
+ocr.selectText.9=Əlavə Parametrlər
+ocr.selectText.10=OST (OCR) Rejimi
+ocr.selectText.11=OST-dən sonra şəkilləri sil (BÜTÜN şəkilləri silir, ancaq çevirmə prosesinin bir hissəsi olduqda işə yarayır)
+ocr.selectText.12=Render Tipi (Qabaqcıl)
+ocr.help=Bunu digər dillər üçün necə istifadə etmək və/və ya docker-də istifadə etməmək üçün bu dokumentasiyanı oxuyun
+ocr.credit=Bu servis OST (OCR) üçün "OCRmyPDF" və "Tesseract" istifadə edir.
+ocr.submit=PDF-i OST ilə işlə
 
 
 #extractImages
@@ -890,15 +894,15 @@ fileToPDF.submit=PDF-ə Çevir
 
 
 #compress
-compress.title=Compress
-compress.header=Compress PDF
-compress.credit=This service uses Ghostscript for PDF Compress/Optimisation.
-compress.selectText.1=Manual Mode - From 1 to 4
-compress.selectText.2=Optimization level:
-compress.selectText.3=4 (Terrible for text images)
-compress.selectText.4=Auto mode - Auto adjusts quality to get PDF to exact size
-compress.selectText.5=Expected PDF Size (e.g. 25MB, 10.8MB, 25KB)
-compress.submit=Compress
+compress.title=Sıxışdır
+compress.header=PDF-i Sıxışdır
+compress.credit=Bu servis PDF sıxışdırılması/Optimizasiyası üçün Ghostscript istifadə edir.
+compress.selectText.1=Manual Mod - 1-dən 4-ə
+compress.selectText.2=Optimizasiya səviyyəsi:
+compress.selectText.3=4 (Mətn şəkilləri üçün yaxşı deyil)
+compress.selectText.4=Avto mod - PDF-in dəqiq ölçüsünü əldə etmək üçün keyfiyyəti avtomatik tənzimləyir
+compress.selectText.5=Gözlənilən PDF Ölçüsü (məsələn, 25MB, 10.8MB, 25KB)
+compress.submit=Sıxışdır
 
 
 #Add image
@@ -919,35 +923,35 @@ merge.submit=Birləşdirin
 
 
 #pdfOrganiser
-pdfOrganiser.title=Page Organiser
-pdfOrganiser.header=PDF Page Organiser
-pdfOrganiser.submit=Rearrange Pages
-pdfOrganiser.mode=Mode
-pdfOrganiser.mode.1=Custom Page Order
-pdfOrganiser.mode.2=Reverse Order
-pdfOrganiser.mode.3=Duplex Sort
-pdfOrganiser.mode.4=Booklet Sort
-pdfOrganiser.mode.5=Side Stitch Booklet Sort
-pdfOrganiser.mode.6=Odd-Even Split
-pdfOrganiser.mode.7=Remove First
-pdfOrganiser.mode.8=Remove Last
-pdfOrganiser.mode.9=Remove First and Last
-pdfOrganiser.mode.10=Odd-Even Merge
-pdfOrganiser.placeholder=(e.g. 1,3,2 or 4-8,2,10-12 or 2n-1)
+pdfOrganiser.title=Səhifə Tənzimləyicisi
+pdfOrganiser.header=PDF Səhifə Tənzimləyicisi
+pdfOrganiser.submit=Səhifələri Yenidən Təşkil Edin
+pdfOrganiser.mode=Rejim
+pdfOrganiser.mode.1=Fərdi Səhifə Düzülüşü
+pdfOrganiser.mode.2=Tərs Düzülüş
+pdfOrganiser.mode.3=İkitərəfli Çeşidləmə
+pdfOrganiser.mode.4=Kitabça Çeşidləmə
+pdfOrganiser.mode.5=Yan Tikiş Kitabçasının Çeşidlənməsi
+pdfOrganiser.mode.6=Tək-Cüt Bölünmə
+pdfOrganiser.mode.7=Birincini Sil
+pdfOrganiser.mode.8=Sonuncunu Sil
+pdfOrganiser.mode.9=Birinci və Sonuncunu Sil
+pdfOrganiser.mode.10=Tək-Cüt Birləşdirmə
+pdfOrganiser.placeholder=(məs., 1,3,2 və ya 4-8,2,10-12 və ya 2n-1)
 
 
 #multiTool
-multiTool.title=PDF Multi Tool
-multiTool.header=PDF Multi Tool
-multiTool.uploadPrompts=File Name
-multiTool.selectAll=Select All
-multiTool.deselectAll=Deselect All
-multiTool.selectPages=Page Select
-multiTool.selectedPages=Selected Pages
-multiTool.page=Page
-multiTool.deleteSelected=Delete Selected
-multiTool.downloadAll=Export
-multiTool.downloadSelected=Export Selected
+multiTool.title=PDF Multi-Alət
+multiTool.header=PDF Multi-Alət
+multiTool.uploadPrompts=Fayl Adı
+multiTool.selectAll=Hamısını Seç
+multiTool.deselectAll=Hamısını Seçməni Ləğv Et
+multiTool.selectPages=Səhifə Seçimi
+multiTool.selectedPages=Seçilmiş Səhifələr
+multiTool.page=Səhifə
+multiTool.deleteSelected=Seçilmişi Sil
+multiTool.downloadAll=İxrac Et
+multiTool.downloadSelected=Seçilmişi İxrac Et
 
 multiTool.insertPageBreak=Insert Page Break
 multiTool.addFile=Add File
@@ -957,10 +961,12 @@ multiTool.split=Split
 multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
-multiTool.dragDropMessage=Page(s) Selected
+multiTool.dragDropMessage=Seçilmiş Səhifə(lər)
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
-multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
+multiTool-advert.message=Bu xüsusiyyət bizim <a href="{0}">multi-alət səhifə</a>mizdə də mövcuddur. Əlavə xüsusiyyətlər və səhifə-səhifə interfeys üçün sınaqdan keçirin!
 
 #view pdf
 viewPdf.title=PDF-ə baxın
@@ -982,32 +988,32 @@ rotate.submit=Fırladın
 
 
 #split-pdfs
-split.title=Split PDF
-split.header=Split PDF
-split.desc.1=The numbers you select are the page number you wish to do a split on
-split.desc.2=As such selecting 1,3,7-9 would split a 10 page document into 6 separate PDFS with:
-split.desc.3=Document #1: Page 1
-split.desc.4=Document #2: Page 2 and 3
-split.desc.5=Document #3: Page 4, 5, 6 and 7
-split.desc.6=Document #4: Page 8
-split.desc.7=Document #5: Page 9
-split.desc.8=Document #6: Page 10
-split.splitPages=Enter pages to split on:
-split.submit=Split
+split.title=PDF-i Bölün
+split.header=PDF-i Bölün
+split.desc.1=Seçdiyiniz Nömrələr Bölmək İstədiyiniz Səhifə Nömrəsidir
+split.desc.2=Beləliklə, 1,3,7-9 Seçimi 10 Səhifəlik Sənədi 6 Ayrı PDF-ə Böləcək:
+split.desc.3=Sənəd #1: Səhifə 1
+split.desc.4=Sənəd #2: Səhifə 2 və 3
+split.desc.5=Sənəd #3: Səhifə 4, 5, 6 və 7
+split.desc.6=Sənəd #4: Səhifə 8
+split.desc.7=Sənəd #5: Səhifə 9
+split.desc.8=Sənəd #6: Səhifə 10
+split.splitPages=Bölünəcək Səhifələri Daxil Edin:
+split.submit=Bölün
 
 
 #merge
-imageToPDF.title=Image to PDF
-imageToPDF.header=Image to PDF
-imageToPDF.submit=Convert
-imageToPDF.selectLabel=Image Fit Options
-imageToPDF.fillPage=Fill Page
-imageToPDF.fitDocumentToImage=Fit Page to Image
-imageToPDF.maintainAspectRatio=Maintain Aspect Ratios
-imageToPDF.selectText.2=Auto rotate PDF
-imageToPDF.selectText.3=Multi file logic (Only enabled if working with multiple images)
-imageToPDF.selectText.4=Merge into single PDF
-imageToPDF.selectText.5=Convert to separate PDFs
+imageToPDF.title=Şəkli PDF-ə
+imageToPDF.header=Şəkli PDF-ə
+imageToPDF.submit=Çevir
+imageToPDF.selectLabel=Şəkil Uyğunluğu Seçimləri
+imageToPDF.fillPage=Səhifəni Doldur
+imageToPDF.fitDocumentToImage=Şəklə Uyğun Səhifə
+imageToPDF.maintainAspectRatio=Aspekt Nisbətlərini Qoruyun
+imageToPDF.selectText.2=PDF-i Avtomatik Fırlat
+imageToPDF.selectText.3=Çoxsaylı Fayl Məntiqi (Yalnız Birdən Çox Şəkil İlə İşləyərkən Aktivdir)
+imageToPDF.selectText.4=Tək Bir PDF-ə Birləşdir
+imageToPDF.selectText.5=Ayrı PDF-lərə Çevirin
 
 
 #pdfToImage
@@ -1026,97 +1032,97 @@ pdfToImage.info=Python Yüklü Deyil.WebP Çevirməsi Üçün Vacibdir
 
 
 #addPassword
-addPassword.title=Add Password
-addPassword.header=Add password (Encrypt)
-addPassword.selectText.1=Select PDF to encrypt
-addPassword.selectText.2=User Password
-addPassword.selectText.3=Encryption Key Length
-addPassword.selectText.4=Higher values are stronger, but lower values have better compatibility.
-addPassword.selectText.5=Permissions to set (Recommended to be used along with Owner password)
-addPassword.selectText.6=Prevent assembly of document
-addPassword.selectText.7=Prevent content extraction
-addPassword.selectText.8=Prevent extraction for accessibility
-addPassword.selectText.9=Prevent filling in form
-addPassword.selectText.10=Prevent modification
-addPassword.selectText.11=Prevent annotation modification
-addPassword.selectText.12=Prevent printing
-addPassword.selectText.13=Prevent printing different formats
-addPassword.selectText.14=Owner Password
-addPassword.selectText.15=Restricts what can be done with the document once it is opened (Not supported by all readers)
-addPassword.selectText.16=Restricts the opening of the document itself
-addPassword.submit=Encrypt
+addPassword.title=Şifr Əlavə Et
+addPassword.header=Şifr Əlavə Et (Şifrləmə)
+addPassword.selectText.1=Şifrlənəcək PDF-i seç
+addPassword.selectText.2=İstifadəçi Şifri
+addPassword.selectText.3=Şifrləmə Açarı Uzunluğu
+addPassword.selectText.4=Böyük dəyərlər daha güclüdür, lakin kiçik dəyərlərin uyğunluğu yüksəkdir.
+addPassword.selectText.5=Təyin olunacaq icazə (Sahib (Owner) Şifri ilə birgə istifadə olunması tövsiyə olunur.)
+addPassword.selectText.6=Sənədin strukturunun dəyişilməsinin qarşısını al
+addPassword.selectText.7=Məzmun xaric edilməsinin qarşısını al
+addPassword.selectText.8=Əlçatanlıq üçün xaricetmənin qarşısını al
+addPassword.selectText.9=Anketin doldurulmasının qarşısını al
+addPassword.selectText.10=Modifikasiyanın qarşısını al
+addPassword.selectText.11=Sitat modifikasiyasının qarşısını al
+addPassword.selectText.12=Çap etmənin qarşısını al
+addPassword.selectText.13=Müxtəlif formatların çap edilməsinin qarşısını al
+addPassword.selectText.14=Sahib Şifri
+addPassword.selectText.15=Sənəd açıldıqdan sonra onunla nə edilə biləcəyini limitləndir (Bütün oxuyucular dəstəkləmir)
+addPassword.selectText.16=Sənədin özünün açılmağını limitləndirir
+addPassword.submit=Şifrlə
 
 
 #watermark
-watermark.title=Add Watermark
-watermark.header=Add Watermark
-watermark.selectText.1=Select PDF to add watermark to:
-watermark.selectText.2=Watermark Text:
-watermark.selectText.3=Font Size:
-watermark.selectText.4=Rotation (0-360):
-watermark.selectText.5=widthSpacer (Space between each watermark horizontally):
-watermark.selectText.6=heightSpacer (Space between each watermark vertically):
-watermark.selectText.7=Opacity (0% - 100%):
-watermark.selectText.8=Watermark Type:
-watermark.selectText.9=Watermark Image:
-watermark.selectText.10=Convert PDF to PDF-Image
-watermark.submit=Add Watermark
-watermark.type.1=Text
-watermark.type.2=Image
+watermark.title=Watermark Əlavə Et
+watermark.header=Watermark Əlavə Et
+watermark.selectText.1=Watermark əlavə olunacaq PDF-i seç
+watermark.selectText.2=Watermark Mətni:
+watermark.selectText.3=Şrift Ölçüsü:
+watermark.selectText.4=Fırlatma (0-360):
+watermark.selectText.5=enBoşluq (Üfuqi olaraq watermark-lar arasındakı məsafə):
+watermark.selectText.6=uzunluqBoşluq (Şaquli olaraq watermark-lar arasındakı məsafə):
+watermark.selectText.7=Şəffaflıq (0% - 100%):
+watermark.selectText.8=Watermark Tipi:
+watermark.selectText.9=Watermark Şəkili:
+watermark.selectText.10=PDF-i PDF-Şəkil-ə çevir
+watermark.submit=Watermark Əlavə Et
+watermark.type.1=Mətn
+watermark.type.2=Şəkil
 
 
 #Change permissions
-permissions.title=Change Permissions
-permissions.header=Change Permissions
-permissions.warning=Warning to have these permissions be unchangeable it is recommended to set them with a password via the add-password page
-permissions.selectText.1=Select PDF to change permissions
-permissions.selectText.2=Permissions to set
-permissions.selectText.3=Prevent assembly of document
-permissions.selectText.4=Prevent content extraction
-permissions.selectText.5=Prevent extraction for accessibility
-permissions.selectText.6=Prevent filling in form
-permissions.selectText.7=Prevent modification
-permissions.selectText.8=Prevent annotation modification
-permissions.selectText.9=Prevent printing
-permissions.selectText.10=Prevent printing different formats
-permissions.submit=Change
+permissions.title=İcazələri Dəyişdir
+permissions.header=İcazələri Dəyişdir
+permissions.warning=Bu İcazələrin Dəyişməz Olması İlə Bağlı Xəbərdarlıq Edərək, Onları Parol Əlavə Et Səhifəsi Vasitəsilə Parolla Təyin Etmək Tövsiyə Olunur.
+permissions.selectText.1=İcazələri Dəyişdirmək Üçün PDF-i Seç
+permissions.selectText.2=Tənzimlənmiş İcazələr
+permissions.selectText.3=Sənədin Yığılmasının Qarşısını Al
+permissions.selectText.4=Məzmunun Çıxarılmasının Qarşısını Al
+permissions.selectText.5=Əlçatanlıq Üçün Çıxarılmasının Qarşısını Alın
+permissions.selectText.6=Formanın Doldurulmasının Qarşısını Alır
+permissions.selectText.7=Modifikasiyanın Qarşısını Al
+permissions.selectText.8=Annotasiyanın Dəyişdirilməsinin Qarşısını Almaq
+permissions.selectText.9=Çapın Qarşısını Al
+permissions.selectText.10=Fərqli Formatlarda Çapın Qarşısını Al
+permissions.submit=Dəyiş
 
 
 #remove password
-removePassword.title=Remove password
-removePassword.header=Remove password (Decrypt)
-removePassword.selectText.1=Select PDF to Decrypt
-removePassword.selectText.2=Password
-removePassword.submit=Remove
+removePassword.title=Şifri Sil
+removePassword.header=Şifri Sil (Deşifr)
+removePassword.selectText.1=Deşifr Üçün PDF-i Seç
+removePassword.selectText.2=Şifr
+removePassword.submit=Sil
 
 
 #changeMetadata
-changeMetadata.title=Change Metadata
-changeMetadata.header=Change Metadata
-changeMetadata.selectText.1=Please edit the variables you wish to change
-changeMetadata.selectText.2=Delete all metadata
-changeMetadata.selectText.3=Show Custom Metadata:
-changeMetadata.author=Author:
-changeMetadata.creationDate=Creation Date (yyyy/MM/dd HH:mm:ss):
-changeMetadata.creator=Creator:
-changeMetadata.keywords=Keywords:
-changeMetadata.modDate=Modification Date (yyyy/MM/dd HH:mm:ss):
-changeMetadata.producer=Producer:
-changeMetadata.subject=Subject:
-changeMetadata.trapped=Trapped:
-changeMetadata.selectText.4=Other Metadata:
-changeMetadata.selectText.5=Add Custom Metadata Entry
-changeMetadata.submit=Change
+changeMetadata.title=Metadata-nı Dəyiş
+changeMetadata.header=Metadata-nı Dəyiş
+changeMetadata.selectText.1=Dəyişmək istədiyiniz dəyişənləri redaktə edin
+changeMetadata.selectText.2=Bütün Metadata-nı Sil
+changeMetadata.selectText.3=Fərdi Metadatanı göstərin:
+changeMetadata.author=Müəllif:
+changeMetadata.creationDate=Yaradılma Tarixi (yyyy/MM/dd HH:mm:ss):
+changeMetadata.creator=Yaradıcı:
+changeMetadata.keywords=Açar Sözlər:
+changeMetadata.modDate=Dəyişiklik Tarixi (yyyy/MM/dd HH:mm:ss):
+changeMetadata.producer=İstehsalçı:
+changeMetadata.subject=Mövzu:
+changeMetadata.trapped=Tələ:
+changeMetadata.selectText.4=Digər Metadata:
+changeMetadata.selectText.5=Xüsusi Metadata girişi əlavə edin
+changeMetadata.submit=Dəyiş
 
 
 #pdfToPDFA
-pdfToPDFA.title=PDF To PDF/A
-pdfToPDFA.header=PDF To PDF/A
-pdfToPDFA.credit=This service uses ghostscript for PDF/A conversion
-pdfToPDFA.submit=Convert
-pdfToPDFA.tip=Currently does not work for multiple inputs at once
-pdfToPDFA.outputFormat=Output format
-pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
+pdfToPDFA.title=PDF-i PDF/A-ya
+pdfToPDFA.header=PDF-i PDF/A-ya
+pdfToPDFA.credit=Bu Servis PDF/A Çevirmək Üçün ghostscript İşlədir
+pdfToPDFA.submit=Çevir
+pdfToPDFA.tip=Hazırda Birdən Çox Giriş Üçün İşləmir
+pdfToPDFA.outputFormat=Çıxış Formatı
+pdfToPDFA.pdfWithDigitalSignature=PDF Rəqəmsal İmza Ehtiva Edir.Bu, növbəti addımda silinəcək.
 
 
 #PDFToWord
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Səviyyəsi: Bölmə üçün istifadə ediləcə
 splitByChapters.desc.3=Metadatanı daxil edin: Əgər yoxlanılıbsa, orijinal PDF-in metadatası hər bir bölünmüş PDF-ə daxil ediləcək.
 splitByChapters.desc.4=Allow Duplicates: Dublikatlara icazə verin: Əgər işarələnərsə, eyni səhifədə birdən çox bookmarka ayrı-ayrı PDF sənədləri yaratmağa icazə verin.
 splitByChapters.submit=PDF-i Ayır
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Buraxılışlar
+releases.title=Buraxılış Qeydləri
+releases.header=Buraxılış Qeydləri
+releases.current.version=Hazırki Buraxılış
+releases.note=Buraxılış Qeydləri yalnız ingiliscə mövcuddur
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_bg_BG.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Разделете PDF по глави
 home.splitPdfByChapters.desc=Разделете PDF на множество файлове въз основа на неговата структура на глави.
 splitPdfByChapters.tags=разделяне, глави, отметки, организиране
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Замени-инвертиране-на-цвят
 replace-color.header=Замяна-инвертиране на цвят PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR режим
 ocr.selectText.11=Премахване на изображения след OCR (Премахва ВСИЧКИ изображения, полезно само ако е част от стъпката на преобразуване)
 ocr.selectText.12=Тип изобразяване (Разширен)
 ocr.help=Моля, прочетете тази документация за това как да използвате това за други езици и/или да не използвате в docker
-ocr.credit=Тази услуга използва OCRmyPDF и Tesseract за OCR.
+ocr.credit=Тази услуга използва qpdf и Tesseract за OCR.
 ocr.submit=Обработка на PDF чрез OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Преобразуване към PDF
 #compress
 compress.title=Компресиране
 compress.header=Компресиране на PDF
-compress.credit=Тази услуга използва Ghostscript за PDF компресиране/оптимизиране.
+compress.credit=Тази услуга използва qpdf за PDF компресиране/оптимизиране.
 compress.selectText.1=Ръчен режим - от 1 до 4
 compress.selectText.2=Ниво на оптимизация:
 compress.selectText.3=4 (Ужасно за текстови изображения)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Промени
 #pdfToPDFA
 pdfToPDFA.title=PDF към PDF/A
 pdfToPDFA.header=PDF към PDF/A
-pdfToPDFA.credit=Тази услуга използва ghostscript за PDF/A преобразуване.
+pdfToPDFA.credit=Тази услуга използва qpdf за PDF/A преобразуване.
 pdfToPDFA.submit=Преобразуване
 pdfToPDFA.tip=В момента не работи за няколко входа наведнъж
 pdfToPDFA.outputFormat=Изходен формат
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Ниво на отметка: Изберете нивот
 splitByChapters.desc.3=Включване на метаданни: Ако е отметнато, метаданните на оригиналния PDF ще бъдат включени във всеки разделен PDF.
 splitByChapters.desc.4=Разрешаване на дубликати: Ако е отметнато, позволява множество отметки на една и съща страница за създаване на отделни PDF файлове.
 splitByChapters.submit=Разделяне на PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_ca_CA.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Divideix PDF per Capítols
 home.splitPdfByChapters.desc=Divideix un PDF en múltiples fitxers segons la seva estructura de capítols.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Reemplaça-Inverteix-Color
 replace-color.header=Reemplaça-Inverteix Color en PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Mode OCR
 ocr.selectText.11=Elimina Imatges després de l'OCR (Elimina TOTES les imatges, útil si forma part d'un procés de conversió)
 ocr.selectText.12=Tipus de Renderització (Avançat)
 ocr.help=Llegeix aquesta documentació sobre com utilitzar-la per a altres idiomes i/o no utilitzar-la a Docker
-ocr.credit=Aquest servei fa servir OCRmyPDF i Tesseract per a OCR.
+ocr.credit=Aquest servei fa servir qpdf i Tesseract per a OCR.
 ocr.submit=Processa PDF amb OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Converteix a PDF
 #compress
 compress.title=Comprimir
 compress.header=Comprimir PDF
-compress.credit=Aquest servei utilitza Ghostscript per a la compressió/optimització de PDF.
+compress.credit=Aquest servei utilitza qpdf per a la compressió/optimització de PDF.
 compress.selectText.1=Mode manual: de l'1 al 4
 compress.selectText.2=Nivell d'optimització:
 compress.selectText.3=4 (terrible per a imatges de text)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Canvia
 #pdfToPDFA
 pdfToPDFA.title=PDF a PDF/A
 pdfToPDFA.header=PDF a PDF/A
-pdfToPDFA.credit=Utilitza Ghostscript per a la conversió a PDF/A
+pdfToPDFA.credit=Utilitza qpdf per a la conversió a PDF/A
 pdfToPDFA.submit=Converteix
 pdfToPDFA.tip=Actualment no funciona per a múltiples entrades al mateix temps
 pdfToPDFA.outputFormat=Format de sortida
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Nivell de Marcadors: Tria el nivell de marcadors que s'ut
 splitByChapters.desc.3=Incloure Metadades: Si està marcat, les metadades del PDF original s'inclouran en cada PDF dividit.
 splitByChapters.desc.4=Permetre Duplicats: Si està marcat, permet diversos marcadors a la mateixa pàgina per crear PDFs separats.
 splitByChapters.submit=Divideix PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_cs_CZ.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Rozdělit PDF podle kapitol
 home.splitPdfByChapters.desc=Rozdělit PDF do více souborů na základě jeho struktury kapitol.
 splitPdfByChapters.tags=rozdělení, kapitoly, zápisky, organizace
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Nahradit inverzní barvu PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Režim OCR
 ocr.selectText.11=Odstranit obrázky po OCR (Odstraní VŠECHNY obrázky, užitečné pouze jako součást kroku konverze)
 ocr.selectText.12=Typ vykreslení (Pokročilé)
 ocr.help=Prosím, přečtěte si tuto dokumentaci o použití pro jiné jazyky a/nebo použití mimo Docker
-ocr.credit=Tato služba používá OCRmyPDF a Tesseract pro OCR.
+ocr.credit=Tato služba používá qpdf a Tesseract pro OCR.
 ocr.submit=Zpracovat PDF s OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Převést na PDF
 #compress
 compress.title=Komprese
 compress.header=Komprimovat PDF
-compress.credit=Tato služba používá Ghostscript pro kompresi/optimalizaci PDF.
+compress.credit=Tato služba používá qpdf pro kompresi/optimalizaci PDF.
 compress.selectText.1=Ruční režim - Od 1 do 4
 compress.selectText.2=Úroveň optimalizace:
 compress.selectText.3=4 (Hrozné pro textové obrázky)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Změnit
 #pdfToPDFA
 pdfToPDFA.title=PDF na PDF/A
 pdfToPDFA.header=PDF na PDF/A
-pdfToPDFA.credit=Tato služba používá ghostscript pro konverzi do formátu PDF/A
+pdfToPDFA.credit=Tato služba používá qpdf pro konverzi do formátu PDF/A
 pdfToPDFA.submit=Převést
 pdfToPDFA.tip=V současné době nepracuje pro více vstupů najednou
 pdfToPDFA.outputFormat=Výstupní formát
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Úroveň záhlaví: Zvolte úroveň záhlaví pro použit
 splitByChapters.desc.3=Zahrnout metadatů: Pokud je zaškrtnuto, původní metadata PDF souboru budou zahrnuty do každého odděleného PDF souboru.
 splitByChapters.desc.4=Povolit duplicitní záznamy: Pokud je zaškrtnuto, návštěvníci mohou vytvořit samostatné PDF soubory z více záhlaví na stejné straně.
 splitByChapters.submit=Podělit se PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_da_DK.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Partitioner PDF efter kapitler
 home.splitPdfByChapters.desc=Partitioner en PDF i flere filer baseret på dens kapitelstruktur.
 splitPdfByChapters.tags=partitionering,kapitler,merker,organisering
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Erstat-omgivende Farve PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR-tilstand
 ocr.selectText.11=Fjern billeder efter OCR (Fjerner ALLE billeder, kun nyttigt hvis det er en del af konverteringstrinnet)
 ocr.selectText.12=Renderingstype (Avanceret)
 ocr.help=Læs venligst denne dokumentation om, hvordan man bruger dette til andre sprog og/eller brug uden for docker
-ocr.credit=Denne tjeneste bruger OCRmyPDF og Tesseract til OCR.
+ocr.credit=Denne tjeneste bruger qpdf og Tesseract til OCR.
 ocr.submit=Behandl PDF med OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konvertér til PDF
 #compress
 compress.title=Komprimer
 compress.header=Komprimer PDF
-compress.credit=Denne tjeneste bruger Ghostscript til PDF Komprimering/Optimering.
+compress.credit=Denne tjeneste bruger qpdf til PDF Komprimering/Optimering.
 compress.selectText.1=Manuel Tilstand - Fra 1 til 4
 compress.selectText.2=Optimeringsniveau:
 compress.selectText.3=4 (Forfærdelig for tekstbilleder)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Ændre
 #pdfToPDFA
 pdfToPDFA.title=PDF Til PDF/A
 pdfToPDFA.header=PDF Til PDF/A
-pdfToPDFA.credit=Denne tjeneste bruger ghostscript til PDF/A-konvertering
+pdfToPDFA.credit=Denne tjeneste bruger qpdf til PDF/A-konvertering
 pdfToPDFA.submit=Konvertér
 pdfToPDFA.tip=Fungerer i øjeblikket ikke for flere input på én gang
 pdfToPDFA.outputFormat=Outputformat
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bogmærke niveau: Vælg nivået af bogmærker, der skal b
 splitByChapters.desc.3=Inkluder metadata: Hvis markeret, vil den originale PDF's metadata inkluderes i hver splitterdels PDF.
 splitByChapters.desc.4=Tillad duplikater: Hvis markeret, tillader det flere bogmærker på samme side til at oprette separate PDF'er.
 splitByChapters.submit=Splitter PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_de_DE.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=PDF-Datei nach Kapiteln aufteilen
 home.splitPdfByChapters.desc=Aufteilung einer PDF-Datei in mehrere Dateien auf Basis der Kapitelstruktur.
 splitPdfByChapters.tags=aufteilen,kapitel,lesezeichen,organisieren
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Farbe Ersetzen-Invertieren
 replace-color.header=Farb-PDF Ersetzen-Invertieren
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR-Modus
 ocr.selectText.11=Bilder nach OCR entfernen (Entfernt ALLE Bilder, nur sinnvoll, wenn Teil des Konvertierungsschritts)
 ocr.selectText.12=Rendertyp (Erweitert)
 ocr.help=Bitte lesen Sie diese Dokumentation, um zu erfahren, wie Sie dies für andere Sprachen verwenden und/oder nicht in Docker verwenden können
-ocr.credit=Dieser Dienst verwendet OCRmyPDF und Tesseract für OCR.
+ocr.credit=Dieser Dienst verwendet qpdf und Tesseract für OCR.
 ocr.submit=PDF mit OCR verarbeiten
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=In PDF konvertieren
 #compress
 compress.title=Komprimieren
 compress.header=PDF komprimieren
-compress.credit=Dieser Dienst verwendet Ghostscript für die PDF-Komprimierung/-Optimierung.
+compress.credit=Dieser Dienst verwendet qpdf für die PDF-Komprimierung/-Optimierung.
 compress.selectText.1=Manueller Modus – Von 1 bis 4
 compress.selectText.2=Optimierungsstufe:
 compress.selectText.3=4 (Schrecklich für Textbilder)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=Diese Funktion ist auch auf unserer <a href="{0}">PDF-Multitool-Seite</a> verfügbar. Probieren Sie sie aus, denn sie bietet eine verbesserte Benutzeroberfläche und zusätzliche Funktionen!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Ändern
 #pdfToPDFA
 pdfToPDFA.title=PDF zu PDF/A
 pdfToPDFA.header=PDF zu PDF/A
-pdfToPDFA.credit=Dieser Dienst verwendet ghostscript für die PDF/A-Konvertierung
+pdfToPDFA.credit=Dieser Dienst verwendet qpdf für die PDF/A-Konvertierung
 pdfToPDFA.submit=Konvertieren
 pdfToPDFA.tip=Dieser Dienst kann nur einzelne Eingangsdateien verarbeiten.
 pdfToPDFA.outputFormat=Ausgabeformat
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Lesezeichenebene: Wählen Sie die Ebene der Lesezeichen,
 splitByChapters.desc.3=Metadaten einschließen: Wenn diese Option aktiviert ist, werden die Metadaten der ursprünglichen PDF-Datei in jede aufgeteilte PDF-Datei übernommen.
 splitByChapters.desc.4=Duplikate erlauben: Wenn diese Option aktiviert ist, können mehrere Lesezeichen auf derselben Seite separate PDF Dateien erstellen.
 splitByChapters.submit=PDF teilen
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_el_GR.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Διχοτομία PDF ανά Περιγραφές
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=διχοτομία,περιγραφές,κεφάλαια,συνορία
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Αντικατάσταση-Αντίστροφη Παθωμένη Πίντσουρ
@@ -868,7 +872,7 @@ ocr.selectText.10=Λειτουργία OCR
 ocr.selectText.11=Κατάργηση εικόνων μετά το OCR (Καταργεί ΟΛΕΣ τις εικόνες, είναι χρήσιμο μόνο αν αποτελεί μέρος του βήματος μετατροπής)
 ocr.selectText.12=Τύπος απόδοσης (Για προχωρημένους)
 ocr.help=Διαβάστε αυτήν την τεκμηρίωση σχετικά με τον τρόπο χρήσης αυτής για άλλες γλώσσες ή/και μη χρήσης σε docker
-ocr.credit=Αυτή η υπηρεσία χρησιμοποιεί OCRmyPDF και Tesseract για OCR.
+ocr.credit=Αυτή η υπηρεσία χρησιμοποιεί qpdf και Tesseract για OCR.
 ocr.submit=Επεξεργασία PDF με OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Μετατροπή σε PDF
 #compress
 compress.title=Συμπίεση
 compress.header=Συμπίεση PDF
-compress.credit=Αυτή η υπηρεσία χρησιμοποιεί Ghostscript για PDF Συμπίεση/Βελτιστοποίηση.
+compress.credit=Αυτή η υπηρεσία χρησιμοποιεί qpdf για PDF Συμπίεση/Βελτιστοποίηση.
 compress.selectText.1=Χειροκίνητη Λειτουργία - Από 1 έως 4
 compress.selectText.2=Επίπεδο Βελτιστοποίησης:
 compress.selectText.3=4 (Πολύ κακό για εικόνες κειμένου)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Επιλέξτε PDF για την προσθήκη το
 watermark.selectText.2=Κείμενο Υδατογραφήματος:
 watermark.selectText.3=Μέγεθος Κειμένου:
 watermark.selectText.4=Περιστροφή (0-360):
-watermark.selectText.5=widthSpacer (Κενό μεταξύ κάθε υδατογραφήματος οριζόντια):
-watermark.selectText.6=heightSpacer (Κενό μεταξύ κάθε υδατογραφήματος κάθετα):
+watermark.selectText.5=Width Spacer (Κενό μεταξύ κάθε υδατογραφήματος οριζόντια):
+watermark.selectText.6=Height Spacer (Κενό μεταξύ κάθε υδατογραφήματος κάθετα):
 watermark.selectText.7=Αδιαφάνεια (Opacity) (0% - 100%):
 watermark.selectText.8=Τύπος Υδατογραφήματος:
 watermark.selectText.9=Εικόνα Υδατογραφήματος:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Αλλαγή
 #pdfToPDFA
 pdfToPDFA.title=PDF σε PDF/A
 pdfToPDFA.header=PDF σε PDF/A
-pdfToPDFA.credit=Αυτή η υπηρεσία χρησιμοποιεί ghostscript για PDF/A μετατροπή
+pdfToPDFA.credit=Αυτή η υπηρεσία χρησιμοποιεί qpdf για PDF/A μετατροπή
 pdfToPDFA.submit=Μετατροπή
 pdfToPDFA.tip=Προς το παρόν δεν λειτουργεί για πολλαπλές εισόδους ταυτόχρονα
 pdfToPDFA.outputFormat=Εξόδος αναμορφώσεων
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Επίπεδο Σήμανσης Σκέψης: Επιλέ
 splitByChapters.desc.3=Πρόσθεση Metadata: Αν επεξεργαστείται, οι αρχικές metadata του PDF θα προστεθούν σε κάθε διαλυμένο PDF.
 splitByChapters.desc.4=Διάλυση Παρόντων Τίτλων Επιπέδου: Αν επεξεργαστείται, επιτρέπει τη δημιουργία αποκοπών PDF με βάση πλήρως καθορισμένους σήμαντες έδρας.
 splitByChapters.submit=Διαλύστε το PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_en_GB.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Advanced Colour options
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR Mode
 ocr.selectText.11=Remove images after OCR (Removes ALL images, only useful if part of conversion step)
 ocr.selectText.12=Render Type (Advanced)
 ocr.help=Please read this documentation on how to use this for other languages and/or use not in docker
-ocr.credit=This service uses OCRmyPDF and Tesseract for OCR.
+ocr.credit=This service uses qpdf and Tesseract for OCR.
 ocr.submit=Process PDF with OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Convert to PDF
 #compress
 compress.title=Compress
 compress.header=Compress PDF
-compress.credit=This service uses Ghostscript for PDF Compress/Optimisation.
+compress.credit=This service uses qpdf for PDF Compress/Optimisation.
 compress.selectText.1=Manual Mode - From 1 to 4
 compress.selectText.2=Optimization level:
 compress.selectText.3=4 (Terrible for text images)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Select PDF to add watermark to:
 watermark.selectText.2=Watermark Text:
 watermark.selectText.3=Font Size:
 watermark.selectText.4=Rotation (0-360):
-watermark.selectText.5=widthSpacer (Space between each watermark horizontally):
-watermark.selectText.6=heightSpacer (Space between each watermark vertically):
+watermark.selectText.5=Width Spacer (Space between each watermark horizontally):
+watermark.selectText.6=Height Spacer (Space between each watermark vertically):
 watermark.selectText.7=Opacity (0% - 100%):
 watermark.selectText.8=Watermark Type:
 watermark.selectText.9=Watermark Image:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Change
 #pdfToPDFA
 pdfToPDFA.title=PDF To PDF/A
 pdfToPDFA.header=PDF To PDF/A
-pdfToPDFA.credit=This service uses ghostscript for PDF/A conversion
+pdfToPDFA.credit=This service uses qpdf for PDF/A conversion
 pdfToPDFA.submit=Convert
 pdfToPDFA.tip=Currently does not work for multiple inputs at once
 pdfToPDFA.outputFormat=Output format
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_en_US.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR Mode
 ocr.selectText.11=Remove images after OCR (Removes ALL images, only useful if part of conversion step)
 ocr.selectText.12=Render Type (Advanced)
 ocr.help=Please read this documentation on how to use this for other languages and/or use not in docker
-ocr.credit=This service uses OCRmyPDF and Tesseract for OCR.
+ocr.credit=This service uses qpdf and Tesseract for OCR.
 ocr.submit=Process PDF with OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Convert to PDF
 #compress
 compress.title=Compress
 compress.header=Compress PDF
-compress.credit=This service uses Ghostscript for PDF Compress/Optimisation.
+compress.credit=This service uses qpdf for PDF Compress/Optimisation.
 compress.selectText.1=Manual Mode - From 1 to 4
 compress.selectText.2=Optimization level:
 compress.selectText.3=4 (Terrible for text images)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Select PDF to add watermark to:
 watermark.selectText.2=Watermark Text:
 watermark.selectText.3=Font Size:
 watermark.selectText.4=Rotation (0-360):
-watermark.selectText.5=widthSpacer (Space between each watermark horizontally):
-watermark.selectText.6=heightSpacer (Space between each watermark vertically):
+watermark.selectText.5=Width Spacer (Space between each watermark horizontally):
+watermark.selectText.6=Height Spacer (Space between each watermark vertically):
 watermark.selectText.7=Opacity (0% - 100%):
 watermark.selectText.8=Watermark Type:
 watermark.selectText.9=Watermark Image:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Change
 #pdfToPDFA
 pdfToPDFA.title=PDF To PDF/A
 pdfToPDFA.header=PDF To PDF/A
-pdfToPDFA.credit=This service uses ghostscript for PDF/A conversion
+pdfToPDFA.credit=This service uses qpdf for PDF/A conversion
 pdfToPDFA.submit=Convert
 pdfToPDFA.tip=Currently does not work for multiple inputs at once
 pdfToPDFA.outputFormat=Output format
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_es_ES.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Dividir PDF por capítulos
 home.splitPdfByChapters.desc=Divida un PDF en varios archivos según su estructura de capítulos.
 splitPdfByChapters.tags=dividir,capítulos,marcadores,organizar
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Reemplazar-Invertir-Color
 replace-color.header=Reemplazar-Invertir Color en PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Modo OCR
 ocr.selectText.11=Eliminar imágenes después de OCR (Elimina TODAS las imágenes, solo es útil si es parte del paso de conversión)
 ocr.selectText.12=Tipo de procesamiento (avanzado)
 ocr.help=Lea esta documentación sobre cómo usar esto para otros idiomas y/o no usarlo en Docker
-ocr.credit=Este servicio utiliza OCRmyPDF y Tesseract para OCR
+ocr.credit=Este servicio utiliza qpdf y Tesseract para OCR
 ocr.submit=Procesar PDF con OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Convertir a PDF
 #compress
 compress.title=Comprimir
 compress.header=Comprimir PDF
-compress.credit=Este servicio utiliza Ghostscript para compresión/optimización de PDF
+compress.credit=Este servicio utiliza qpdf para compresión/optimización de PDF
 compress.selectText.1=Modo manual - De 1 a 4
 compress.selectText.2=Nivel de optimización:
 compress.selectText.3=4 (Terrible para imágenes de texto)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Cambiar
 #pdfToPDFA
 pdfToPDFA.title=PDF a PDF/A
 pdfToPDFA.header=PDF a PDF/A
-pdfToPDFA.credit=Este servicio usa ghostscript para la conversión a PDF/A
+pdfToPDFA.credit=Este servicio usa qpdf para la conversión a PDF/A
 pdfToPDFA.submit=Convertir
 pdfToPDFA.tip=Actualmente no funciona para múltiples entrada a la vez
 pdfToPDFA.outputFormat=Formato de salida
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Nivel de Marcador: Elige el nivel de marcadores para divi
 splitByChapters.desc.3=Incluir Metadatos: Si está seleccionado, los metadatos del PDF original se incluirán en cada PDF dividido.
 splitByChapters.desc.4=Permitir Duplicados: Si está seleccionado, permite que múltiples marcadores en la misma página creen archivos PDF separados.
 splitByChapters.submit=Dividir PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_eu_ES.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR modua
 ocr.selectText.11=Irudiak ezabatu OCR-ren ondoren (Irudi GUZTIAK ezabatzen ditu, bakarrik da erabilgarri bihurketa urratsaren parte baldin bada)
 ocr.selectText.12=Prozesaketa-mota (aurreratua)
 ocr.help=Irakurri honen erabilerari buruzko dokumentazioa beste hizkuntza batzuetarako eta/edo ez erabili Docker-en
-ocr.credit=Zerbitzu honek OCRmyPDF eta OCR-rako Tesseract erabiltzen ditu
+ocr.credit=Zerbitzu honek qpdf eta OCR-rako Tesseract erabiltzen ditu
 ocr.submit=PDF prozesatu OCR-rekin
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=PDF bihurtu
 #compress
 compress.title=Konprimatu
 compress.header=PDFa konprimatu
-compress.credit=Zerbitzu honek Ghostscript erabiltzen du PDFak komprimatzeko/optimizatzeko
+compress.credit=Zerbitzu honek qpdf erabiltzen du PDFak komprimatzeko/optimizatzeko
 compress.selectText.1=Eskuz 1etik 4ra
 compress.selectText.2=Optimizazio maila:
 compress.selectText.3=4 (Izugarria testu-irudietarako)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Aldatu
 #pdfToPDFA
 pdfToPDFA.title=PDFa PDF/A bihurtu
 pdfToPDFA.header=PDFa PDF/A bihurtu
-pdfToPDFA.credit=Zerbitzu honek ghostscript erabiltzen du PDFak PDF/A bihurtzeko
+pdfToPDFA.credit=Zerbitzu honek qpdf erabiltzen du PDFak PDF/A bihurtzeko
 pdfToPDFA.submit=Bihurtu
 pdfToPDFA.tip=Currently does not work for multiple inputs at once
 pdfToPDFA.outputFormat=Output format
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_fr_FR.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Séparer un PDF par chapitres
 home.splitPdfByChapters.desc=Séparez un PDF en fichiers multiples en fonction de sa structure par chapitres.
 splitPdfByChapters.tags=séparer,chapitres,split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Remplacer-Inverser-Couleur
 replace-color.header=Remplacer-Inverser Couleur PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Mode OCR
 ocr.selectText.11=Supprimer les images après l'OCR (Supprime TOUTES les images, utile uniquement si elles font partie de l'étape de conversion)
 ocr.selectText.12=Type de rendu (avancé)
 ocr.help=Veuillez lire cette documentation pour savoir comment utiliser l'OCR pour d'autres langues ou une utilisation hors Docker :
-ocr.credit=Ce service utilise OCRmyPDF et Tesseract pour l'OCR.
+ocr.credit=Ce service utilise qpdf et Tesseract pour l'OCR.
 ocr.submit=Traiter
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Convertir
 #compress
 compress.title=Compresser un PDF
 compress.header=Compresser un PDF (lorsque c'est possible!)
-compress.credit=Ce service utilise Ghostscript pour la compression et l'optimisation des PDF.
+compress.credit=Ce service utilise qpdf pour la compression et l'optimisation des PDF.
 compress.selectText.1=Mode manuel – de 1 à 4
 compress.selectText.2=Niveau d'optimisation
 compress.selectText.3=4 (terrible pour les images textuelles)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Déplacer vers la gauche
 multiTool.moveRight=Déplacer vers la droite
 multiTool.delete=Supprimer
 multiTool.dragDropMessage=Page(s) sélectionnées
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=Cette fonctionnalité est aussi disponible dans la <a href="{0}">page de l'outil multifonction</a>. Allez-y pour une interface page par page améliorée et des fonctionnalités additionnelles !
@@ -1054,8 +1060,8 @@ watermark.selectText.1=PDF auquel ajouter un filigrane
 watermark.selectText.2=Texte du filigrane
 watermark.selectText.3=Taille de police
 watermark.selectText.4=Rotation (de 0 à 360 degrés)
-watermark.selectText.5=widthSpacer (espace entre chaque filigrane horizontalement)
-watermark.selectText.6=heightSpacer (espace entre chaque filigrane verticalement)
+watermark.selectText.5=Width Spacer (espace entre chaque filigrane horizontalement)
+watermark.selectText.6=Height Spacer (espace entre chaque filigrane verticalement)
 watermark.selectText.7=Opacité (de 0% à 100%)
 watermark.selectText.8=Type de filigrane
 watermark.selectText.9=Image du filigrane
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Modifier
 #pdfToPDFA
 pdfToPDFA.title=PDF en PDF/A
 pdfToPDFA.header=PDF en PDF/A
-pdfToPDFA.credit=Ce service utilise ghostscript pour la conversion en PDF/A.
+pdfToPDFA.credit=Ce service utilise qpdf pour la conversion en PDF/A.
 pdfToPDFA.submit=Convertir
 pdfToPDFA.tip=Ne fonctionne actuellement pas pour plusieurs entrées à la fois
 pdfToPDFA.outputFormat=Format de sortie
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Niveau de Signet : Choisissez le niveau de signets à uti
 splitByChapters.desc.3=Inclure les Métadonnées : Si coché, les métadonnées du PDF original seront incluses dans chaque PDF divisé.
 splitByChapters.desc.4=Autoriser les Doublons : Si coché, permet à plusieurs signets sur la même page de créer des PDF séparés.
 splitByChapters.submit=Diviser le PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_ga_IE.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Mód OCR
 ocr.selectText.11=Bain íomhánna tar éis OCR (Bain GACH íomhá, ní úsáideach ach amháin má tá siad mar chuid den chéim tiontaithe)
 ocr.selectText.12=Cineál Rindreála (Ardleibhéal)
 ocr.help=Léigh le do thoil an doiciméadú seo ar conas é seo a úsáid do theangacha eile agus/nó úsáid nach bhfuil i ndugairí
-ocr.credit=Úsáideann an tseirbhís seo OCRmyPDF agus Tesseract le haghaidh OCR.
+ocr.credit=Úsáideann an tseirbhís seo qpdf agus Tesseract le haghaidh OCR.
 ocr.submit=Próiseáil PDF le OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Tiontaigh go PDF
 #compress
 compress.title=Comhbhrúigh
 compress.header=Comhbhrúigh PDF
-compress.credit=Úsáideann an tseirbhís seo Ghostscript le haghaidh Comhbhrú/Optimization PDF.
+compress.credit=Úsáideann an tseirbhís seo qpdf le haghaidh Comhbhrú/Optimization PDF.
 compress.selectText.1=Mód Láimhe - Ó 1 go 4
 compress.selectText.2=Leibhéal optamaithe:
 compress.selectText.3=4 (Uafásach le haghaidh íomhánna téacs)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,7 +1060,7 @@ watermark.selectText.1=Roghnaigh PDF chun comhartha uisce a chur leis:
 watermark.selectText.2=Téacs Comhartha Uisce:
 watermark.selectText.3=Méid cló:
 watermark.selectText.4=Rothlú (0-360):
-watermark.selectText.5=widthSpacer (Spás idir gach comhartha uisce go cothrománach):
+watermark.selectText.5=Width Spacer (Spás idir gach comhartha uisce go cothrománach):
 watermark.selectText.6=spásaire airde (Spás idir gach comhartha uisce go hingearach):
 watermark.selectText.7=Teimhneacht (0% - 100%):
 watermark.selectText.8=Cineál Comhartha Uisce:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Athrú
 #pdfToPDFA
 pdfToPDFA.title=PDF Go PDF/A
 pdfToPDFA.header=PDF Go PDF/A
-pdfToPDFA.credit=Úsáideann an tseirbhís seo ghostscript chun PDF/A a thiontú
+pdfToPDFA.credit=Úsáideann an tseirbhís seo qpdf chun PDF/A a thiontú
 pdfToPDFA.submit=Tiontaigh
 pdfToPDFA.tip=Faoi láthair ní oibríonn sé le haghaidh ionchuir iolracha ag an am céanna
 pdfToPDFA.outputFormat=Formáid aschuir
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_hi_IN.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=अध्यायों पर अलग-कर
 home.splitPdfByChapters.desc=पुस्तक के अध्याय की संरचना पर आधारित एक PDF को बहिन-भागों में विभाजित करें
 splitPdfByChapters.tags=विभाजन,अध्याय,पसंदीदा,रजैत
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=चित्र रंग परिवर्तन/उलटकर परिवर्तन PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR मोड
 ocr.selectText.11=OCR के बाद छवियां हटाएँ (सभी छवियां हटाएँ, केवल परिवर्तन चरण का हिस्सा होता है)
 ocr.selectText.12=रेंडर टाइप (उन्नत)
 ocr.help=कृपया इस डॉक्यूमेंटेशन को पढ़ें कि इसे अन्य भाषाओं के लिए कैसे उपयोग किया जाता है और/या डॉकर में नहीं हैं
-ocr.credit=इस सेवा में OCRmyPDF और टेसरेक्ट का उपयोग होता है।
+ocr.credit=इस सेवा में qpdf और टेसरेक्ट का उपयोग होता है।
 ocr.submit=OCR के साथ PDF प्रोसेस करें
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=पीडीएफ़ में बदलें
 #compress
 compress.title=संकुचित करें
 compress.header=PDF को संकुचित करें
-compress.credit=यह सेवा PDF संकुचन/अनुकूलन के लिए Ghostscript का उपयोग करती है।
+compress.credit=यह सेवा PDF संकुचन/अनुकूलन के लिए qpdf का उपयोग करती है।
 compress.selectText.1=मैनुअल मोड - 1 से 4 तक
 compress.selectText.2=अनुकूलन स्तर:
 compress.selectText.3=4 (पाठ छवियों के लिए अत्यधिक)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=बदलें
 #pdfToPDFA
 pdfToPDFA.title=PDF से PDF/A में
 pdfToPDFA.header=PDF से PDF/A में
-pdfToPDFA.credit=इस सेवा में PDF/A परिवर्तन के लिए ghostscript का उपयोग किया जाता है।
+pdfToPDFA.credit=इस सेवा में PDF/A परिवर्तन के लिए qpdf का उपयोग किया जाता है।
 pdfToPDFA.submit=परिवर्तित करें
 pdfToPDFA.tip=यह सैकड़ों प्रविष्टियाँ एक ही समय में काम करते हैं
 pdfToPDFA.outputFormat=आउटपुट फॉर्मेट
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=लेमैक्स स्तर: विभाजन
 splitByChapters.desc.3=मॉडेटरेट का शामिल करें: यदि सत्यापित किया जाता है, प्रारंभिक PDF की मॉडेटरेट को प्रत्येक विभाग PDF में शामिल किया जाएगा।
 splitByChapters.desc.4=यादृच्छिक पुनरावृत्ति अनुमोदित: यदि सत्यापित किया जाता है, एक ही पेज पर दोहरे मूल्यांकन पब्लिक पीड़एफ बनाने की संभावना देता है।
 splitByChapters.submit=PDF विभाजित
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_hr_HR.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Podijeli PDF prema glavama
 home.splitPdfByChapters.desc=Podijeli PDF na više datoteka prema njegovom strukturnom obliku glava.
 splitPdfByChapters.tags=podjela, glave, markere, organizacija
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Zameni-inverziranje boja u PDF-u
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR način
 ocr.selectText.11=Ukloni slike nakon OCR-a (Uklanja SVE slike, korisno samo ako je dio koraka konverzije)
 ocr.selectText.12=Vrsta iscrtavanja (napredno)
 ocr.help=Pročitajte ovu dokumentaciju o tome kako ovo koristiti za druge jezike i/ili koristiti ne u dockeru
-ocr.credit=Ova usluga koristi OCRmyPDF i Tesseract za OCR.
+ocr.credit=Ova usluga koristi qpdf i Tesseract za OCR.
 ocr.submit=Obradi PDF sa OCR-om
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Pretvori u PDF
 #compress
 compress.title=Komprimirajte
 compress.header=Komprimirajte PDF
-compress.credit=Ova usluga koristi Ghostscript za komprimiranje / optimizaciju PDF-a.
+compress.credit=Ova usluga koristi qpdf za komprimiranje / optimizaciju PDF-a.
 compress.selectText.1=Ručni režim - Od 1 do 4
 compress.selectText.2=Nivo optimizacije:
 compress.selectText.3=4 (Užasno za tekstualne slike)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Promijeniti
 #pdfToPDFA
 pdfToPDFA.title=PDF u PDF/A
 pdfToPDFA.header=PDF u PDF/A
-pdfToPDFA.credit=Ova usluga koristi ghostscript za PDF/A pretvorbu
+pdfToPDFA.credit=Ova usluga koristi qpdf za PDF/A pretvorbu
 pdfToPDFA.submit=Pretvoriti
 pdfToPDFA.tip=Trenutno ne radi za više unosa odjednom
 pdfToPDFA.outputFormat=Izlazni format
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Nivo oznaka: Odaberite nivo oznaka koji će se koristiti
 splitByChapters.desc.3=Uključi metapodatke: Ako je pokušano, metapodaci iz originalne PDF datoteke će biti uključeni u svaku podijeljenu PDF datoteku.
 splitByChapters.desc.4=Dopuštaj duplikate: Ako je ova opcija zaštićena, dozvoljava se da se na istoj strani mogu stvoriti posebne PDF datoteke s više oznaka.
 splitByChapters.submit=Podijeli PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_hu_HU.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=PDF felosztása fejezetek szerint
 home.splitPdfByChapters.desc=Fejezetei alapján egy PDF fájl több dokumentumba osztás.
 splitPdfByChapters.tags=Osztás, fejezetek, jelezes, organizálás
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Visszaalakítás-összevétel a színekkel PDF-ben
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR mód
 ocr.selectText.11=Képek eltávolítása OCR után (Az ÖSSZES kép eltávolítása, csak akkor hasznos, ha a konverzió része)
 ocr.selectText.12=Render típusa (Speciális)
 ocr.help=Kérjük, olvassa el ezt a dokumentációt az egyéb nyelvek használatához és/vagy a nem Docker-es használathoz.
-ocr.credit=Ez a szolgáltatás az OCRmyPDF és a Tesseract OCR használatával működik.
+ocr.credit=Ez a szolgáltatás az qpdf és a Tesseract OCR használatával működik.
 ocr.submit=PDF feldolgozása OCR-rel
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konvertálás PDF dokumentummá
 #compress
 compress.title=Tömörítés
 compress.header=PDF tömörítése
-compress.credit=Ez a szolgáltatás a Ghostscript-et használja a PDF tömörítéséhez/optimalizálásához.
+compress.credit=Ez a szolgáltatás a qpdf-et használja a PDF tömörítéséhez/optimalizálásához.
 compress.selectText.1=Kézi mód - 1-től 4-ig
 compress.selectText.2=Optimalizálási szint:
 compress.selectText.3=4 (nem ajánlott a szöveges képekhez)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Válassza ki a PDF-t, amelyhez vízjelet kíván hozzáad
 watermark.selectText.2=Vízjel szövege:
 watermark.selectText.3=Betűméret:
 watermark.selectText.4=Forgatás (0-360):
-watermark.selectText.5=widthSpacer (Hely a vízjelek között vízszintesen):
-watermark.selectText.6=heightSpacer (Hely a vízjelek között függőlegesen):
+watermark.selectText.5=Width Spacer (Hely a vízjelek között vízszintesen):
+watermark.selectText.6=Height Spacer (Hely a vízjelek között függőlegesen):
 watermark.selectText.7=Átlátszóság (0% - 100%):
 watermark.selectText.8=Vízjel típusa:
 watermark.selectText.9=Vízjel képe:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Módosítás
 #pdfToPDFA
 pdfToPDFA.title=PDF >> PDF/A
 pdfToPDFA.header=PDF >> PDF/A
-pdfToPDFA.credit=Ez a szolgáltatás az ghostscript-t használja a PDF/A konverzióhoz
+pdfToPDFA.credit=Ez a szolgáltatás az qpdf-t használja a PDF/A konverzióhoz
 pdfToPDFA.submit=Konvertálás
 pdfToPDFA.tip=Jelenleg egyszerre több fájl nem működik ezzel a funkcióval
 pdfToPDFA.outputFormat=Kimeneti formátum
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Metaadatok belefoglalása: Ha bevanítva van, az eredeti PDF fájl metaadatai megtartódnak minden osztott fájlban.
 splitByChapters.desc.4=Duplikációk engedélyezése: Ha bevanítva van, lehetővé teszi a megadott oldalon lévő több kijelzőszint alapján új PDF-ek létrehozása.
 splitByChapters.submit=PDF osztás
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_id_ID.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Pisahkan PDF berdasarkan Bab
 home.splitPdfByChapters.desc=Memisahkan PDF menjadi beberapa file berdasarkan struktur babnya.
 splitPdfByChapters.tags=pemisahan,bab,bookmark,atur
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Ganti-Inversi-Warna
 replace-color.header=Ganti-Inversi Warna PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Mode OCR
 ocr.selectText.11=Hapus gambar setelah OCR (Menghapus Semua gambar, hanya berguna jika merupakan bagian dari langkah konversi)
 ocr.selectText.12=Jenis Render (Lanjutan)
 ocr.help=Silakan baca dokumentasi ini tentang cara menggunakan ini untuk bahasa lain dan/atau penggunaan yang tidak ada di docker
-ocr.credit=Layanan ini menggunakan OCRmyPDF dan Tesseract untuk OCR.
+ocr.credit=Layanan ini menggunakan qpdf dan Tesseract untuk OCR.
 ocr.submit=Memproses PDF dengan OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konversi ke PDF
 #compress
 compress.title=Kompres
 compress.header=Kompres PDF
-compress.credit=Layanan ini menggunakan Ghostscript untuk Kompresi/Optimalisasi PDF.
+compress.credit=Layanan ini menggunakan qpdf untuk Kompresi/Optimalisasi PDF.
 compress.selectText.1=Mode Manual - Dari 1 hingga 4
 compress.selectText.2=Tingkat Optimalisasi:
 compress.selectText.3=4 (Buruk untuk gambar teks)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Pilih PDF untuk menambahkan watermark:
 watermark.selectText.2=Text Watermark:
 watermark.selectText.3=Ukuran Huruf:
 watermark.selectText.4=Rotasi (0-360):
-watermark.selectText.5=widthSpacer (Spasi diantara setiap watermark horisontal):
-watermark.selectText.6=heightSpacer (Spasi diantara setiap watermark vertikal):
+watermark.selectText.5=Width Spacer (Spasi diantara setiap watermark horisontal):
+watermark.selectText.6=Height Spacer (Spasi diantara setiap watermark vertikal):
 watermark.selectText.7=Kejernihan (0% - 100%):
 watermark.selectText.8=Tipe Watermark:
 watermark.selectText.9=Gambar Watermark:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Ganti
 #pdfToPDFA
 pdfToPDFA.title=PDF Ke PDF/A
 pdfToPDFA.header=PDF ke PDF/A
-pdfToPDFA.credit=Layanan ini menggunakan ghostscript untuk konversi PDF/A.
+pdfToPDFA.credit=Layanan ini menggunakan qpdf untuk konversi PDF/A.
 pdfToPDFA.submit=Konversi
 pdfToPDFA.tip=Saat ini tidak dapat digunakan untuk beberapa input sekaligus
 pdfToPDFA.outputFormat=Format keluaran
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Tingkatan Markah: Pilih tingkatan markah yang digunakan u
 splitByChapters.desc.3=Termasuk Metadata: Jika dicentang, metadata asli PDF akan disertakan dalam setiap PDF yang dibagi.
 splitByChapters.desc.4=Izinkan Duplikat: Jika dicentang, mengizinkan beberapa markah pada halaman yang sama untuk membuat PDF terpisah.
 splitByChapters.submit=Pecah PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_it_IT.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Dividi PDF per capitoli
 home.splitPdfByChapters.desc=Dividi un PDF in più file in base alla struttura dei capitoli.
 splitPdfByChapters.tags=dividi, capitoli, segnalibri, organizza
 
+home.validateSignature.title=Convalida la firma PDF
+home.validateSignature.desc=Verificare le firme digitali e i certificati nei documenti PDF
+validateSignature.tags=firma,verifica,convalida,pdf,certificato,firma digitale,convalida firma,convalida certificato
+
 #replace-invert-color
 replace-color.title=Sostituisci-Inverti-Colore
 replace-color.header=Sostituisci-Inverti colore PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Modalità OCR
 ocr.selectText.11=Rimuovi immagini dopo la scansione (Rimuove TUTTE le immagini, utile solo come parte del processo di conversione)
 ocr.selectText.12=Modalità di rendering (avanzato)
 ocr.help=Per favore leggi la documentazione su come usare il programma per altri linguaggi e/o uso non in Docker
-ocr.credit=Questo servizio utilizza OCRmyPDF e Tesseract per l'OCR.
+ocr.credit=Questo servizio utilizza qpdf e Tesseract per l'OCR.
 ocr.submit=Scansiona testo nel PDF con OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Converti in PDF
 #compress
 compress.title=Comprimi
 compress.header=Comprimi PDF
-compress.credit=Questo servizio utilizza Ghostscript per la compressione/ottimizzazione dei PDF.
+compress.credit=Questo servizio utilizza qpdf per la compressione/ottimizzazione dei PDF.
 compress.selectText.1=Modalità manuale - Da 1 a 4
 compress.selectText.2=Livello di ottimizzazione:
 compress.selectText.3=4 (Terribile per le immagini di testo)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Sposta a sinistra
 multiTool.moveRight=Sposta a destra
 multiTool.delete=Elimina
 multiTool.dragDropMessage=Pagina(e) selezionata(e)
+multiTool.undo=Annulla
+multiTool.redo=Rifai
 
 #multiTool-advert
 multiTool-advert.message=Questa funzione è disponibile anche nella nostra <a href="{0}">pagina multi-strumento</a>. Scoprila per un'interfaccia utente pagina per pagina migliorata e funzionalità aggiuntive!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Cambia proprietà
 #pdfToPDFA
 pdfToPDFA.title=Da PDF a PDF/A
 pdfToPDFA.header=Da PDF a PDF/A
-pdfToPDFA.credit=Questo servizio utilizza Ghostscript per la conversione in PDF/A.
+pdfToPDFA.credit=Questo servizio utilizza qpdf per la conversione in PDF/A.
 pdfToPDFA.submit=Converti
 pdfToPDFA.tip=Attualmente non funziona per più input contemporaneamente
 pdfToPDFA.outputFormat=Formato di output
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Livello segnalibro: seleziona il livello dei segnalibri d
 splitByChapters.desc.3=Includi metadati: se selezionato, i metadati del PDF originale verranno inclusi in ogni PDF diviso.
 splitByChapters.desc.4=Consenti duplicati: se selezionata, consente più segnalibri sulla stessa pagina per creare PDF separati.
 splitByChapters.submit=Dividi PDF
+
+#File Chooser
+fileChooser.click=Clicca
+fileChooser.or=o
+fileChooser.dragAndDrop=Trascina & Rilascia
+fileChooser.hoveredDragAndDrop=Trascina & rilascia i file qui
+
+#release notes
+releases.footer=Rilasci
+releases.title=Note di rilascio
+releases.header=Note di rilascio
+releases.current.version=Rilascio corrente
+releases.note=Le note di rilascio sono disponibili solo in inglese
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validare le firme PDF
+validateSignature.header=Convalidare le firme digitali
+validateSignature.selectPDF=Seleziona il file PDF firmato
+validateSignature.submit=Convalida firme
+validateSignature.results=Risultati di convalida
+validateSignature.status=Stato
+validateSignature.signer=Firmatario
+validateSignature.date=Data
+validateSignature.reason=Ragione
+validateSignature.location=Posizione
+validateSignature.noSignatures=Nessuna firma digitale trovata in questo documento
+validateSignature.status.valid=Valida
+validateSignature.status.invalid=Invalida
+validateSignature.chain.invalid=Convalida della catena di certificati non riuscita: impossibile verificare l'identità del firmatario
+validateSignature.trust.invalid=Certificato non presente nell'archivio attendibile: la fonte non può essere verificata
+validateSignature.cert.expired=Il certificato è scaduto
+validateSignature.cert.revoked=Il certificato è stato revocato
+validateSignature.signature.info=Informazioni sulla firma
+validateSignature.signature=Firma
+validateSignature.signature.mathValid=La firma è matematicamente valida MA:
+validateSignature.selectCustomCert=File di certificato personalizzato X.509 (opzionale)
+validateSignature.cert.info=Dettagli del certificato
+validateSignature.cert.issuer=Emittente
+validateSignature.cert.subject=Soggetto
+validateSignature.cert.serialNumber=Numero di serie
+validateSignature.cert.validFrom=Valido da
+validateSignature.cert.validUntil=Valido fino a
+validateSignature.cert.algorithm=Algoritmo
+validateSignature.cert.keySize=Dimensione chiave
+validateSignature.cert.version=Versione
+validateSignature.cert.keyUsage=Utilizzo della chiave
+validateSignature.cert.selfSigned=Autofirmato
+validateSignature.cert.bits=bit

src/main/resources/messages_ja_JP.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCRモード
 ocr.selectText.11=OCR後に画像を削除する (すべての画像を削除します。変換ステップの一部である場合にのみ有効です)。
 ocr.selectText.12=レンダリングタイプ (高度)
 ocr.help=他の言語でこれを使用する方法やDocker以外で使用する方法についてはこのドキュメントをお読みください。
-ocr.credit=本サービスにはOCRにOCRmyPDFとTesseractを使用しています。
+ocr.credit=本サービスにはOCRにqpdfとTesseractを使用しています。
 ocr.submit=OCRでPDFを処理する
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=PDFを変換
 #compress
 compress.title=圧縮
 compress.header=PDFを圧縮
-compress.credit=本サービスはPDFの圧縮/最適化にGhostscriptを使用しています。
+compress.credit=本サービスはPDFの圧縮/最適化にqpdfを使用しています。
 compress.selectText.1=手動モード -  1 から 4
 compress.selectText.2=品質レベル:
 compress.selectText.3=4 (テキスト画像は最悪)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=変更
 #pdfToPDFA
 pdfToPDFA.title=PDFをPDF/Aに変換
 pdfToPDFA.header=PDFをPDF/Aに変換
-pdfToPDFA.credit=本サービスはPDF/Aの変換にghostscriptを使用しています。
+pdfToPDFA.credit=本サービスはPDF/Aの変換にqpdfを使用しています。
 pdfToPDFA.submit=変換
 pdfToPDFA.tip=現在、一度に複数の入力に対して機能しません
 pdfToPDFA.outputFormat=Output format
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_ko_KR.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=챕터별로 PDF 분할
 home.splitPdfByChapters.desc=PDF를 여러 파일로 나눕니다. 각 장의 구조에 따라.
 splitPdfByChapters.tags=분할, 챕터, 북마크, 조직화
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=색상 교체/반전 PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR 모드
 ocr.selectText.11=OCR 후 이미지 제거(모든 이미지 제거, 변환 단계의 일부인 경우에만 유용)
 ocr.selectText.12=렌더 유형(고급)
 ocr.help=다른 언어 또는 Docker에 포함되지 않은 언어에 대해 사용하는 방법에 대해서는 이 문서를 참조합니다.
-ocr.credit=이 서비스는 OCR에 OCRmyPDF와 Tesseract를 사용합니다.
+ocr.credit=이 서비스는 OCR에 qpdf와 Tesseract를 사용합니다.
 ocr.submit=인식
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=PDF로 변환
 #compress
 compress.title=압축
 compress.header=PDF 압축
-compress.credit=이 서비스는 PDF 압축 및 최적화를 위해 Ghostscript를 사용합니다.
+compress.credit=이 서비스는 PDF 압축 및 최적화를 위해 qpdf를 사용합니다.
 compress.selectText.1=수동 모드 - 1에서 4
 compress.selectText.2=최적화 수준:
 compress.selectText.3=4 (텍스트 이미지에 적합하지 않음)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=변경
 #pdfToPDFA
 pdfToPDFA.title=PDF를 PDF/A로
 pdfToPDFA.header=PDF 문서를 PDF/A로 변환
-pdfToPDFA.credit=이 서비스는 PDF/A 변환을 위해 ghostscript 문서를 사용합니다.
+pdfToPDFA.credit=이 서비스는 PDF/A 변환을 위해 qpdf 문서를 사용합니다.
 pdfToPDFA.submit=변환
 pdfToPDFA.tip=현재 한 번에 여러 입력에 대해 작동하지 않습니다.
 pdfToPDFA.outputFormat=출력 형식
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=북마크 레벨: 분할에 사용할 북마크 레벨을
 splitByChapters.desc.3=메타데이터 포함: 체크하면 각 분할된 PDF에는 원본 PDF의 메타데이터가 포함됩니다.
 splitByChapters.desc.4=중복 허용: 중복 북마크가 있는 같은 페이지에 여러 번 분할 PDF를 생성합니다.
 splitByChapters.submit=PDF 분할
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_nl_NL.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=PDF op hoofdstukken splitsen
 home.splitPdfByChapters.desc=Splits een PDF op basis van zijn hoofdstukstructuur in meerdere bestanden.
 splitPdfByChapters.tags=splitsen, hoofdstukken, bookmarks, organiseren
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Kleur-instellingen voor PDF's
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR-modus
 ocr.selectText.11=Verwijder afbeeldingen na OCR (Verwijdert ALLE afbeeldingen, alleen nuttig als onderdeel van conversiestap)
 ocr.selectText.12=Weergave Type (Geavanceerd)
 ocr.help=Lees deze documentatie over hoe dit te gebruiken voor andere talen en/of gebruik buiten docker
-ocr.credit=Deze dienst maakt gebruik van OCRmyPDF en Tesseract voor OCR.
+ocr.credit=Deze dienst maakt gebruik van qpdf en Tesseract voor OCR.
 ocr.submit=Verwerk PDF met OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Omzetten naar PDF
 #compress
 compress.title=Comprimeren
 compress.header=PDF comprimeren
-compress.credit=Deze functie gebruikt Ghostscript voor PDF Compressie/Optimalisatie.
+compress.credit=Deze functie gebruikt qpdf voor PDF Compressie/Optimalisatie.
 compress.selectText.1=Handmatige modus - Van 1 tot 4
 compress.selectText.2=Optimalisatieniveau:
 compress.selectText.3=4 (Verschrikkelijk voor tekstafbeeldingen)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Wijzigen
 #pdfToPDFA
 pdfToPDFA.title=PDF naar PDF/A
 pdfToPDFA.header=PDF naar PDF/A
-pdfToPDFA.credit=Deze service gebruikt ghostscript voor PDF/A-conversie
+pdfToPDFA.credit=Deze service gebruikt qpdf voor PDF/A-conversie
 pdfToPDFA.submit=Converteren
 pdfToPDFA.tip=Werkt momenteel niet voor meerdere inputs tegelijkertijd.
 pdfToPDFA.outputFormat=Uitvoerindeling
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Boekmarkeer niveau: Kies het boekmarkeer niveau om te geb
 splitByChapters.desc.3=Metadata inclusief: Als gecijfeld, de originele PDF's metadata wordt ingevoegd in elk gesplitst PDF-bestand.
 splitByChapters.desc.4=Dubbele items toestaan: Als gecijfeld, zorgen multiple boekmarkeersymboolen op dezelfde pagina voor het maken van aparte PDF-bestanden.
 splitByChapters.submit=PDF splitsen
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_no_NB.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR-modus
 ocr.selectText.11=Fjern bilder etter OCR (Fjerner ALLE bilder, kun nyttig hvis det er en del av konverteringsprosessen)
 ocr.selectText.12=Renderingstype (Avansert)
 ocr.help=Vennligst les denne dokumentasjonen for hvordan du bruker dette for andre språk og/eller bruk utenfor Docker.
-ocr.credit=Denne tjenesten bruker OCRmyPDF og Tesseract for OCR.
+ocr.credit=Denne tjenesten bruker qpdf og Tesseract for OCR.
 ocr.submit=Behandle PDF med OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konverter til PDF
 #compress
 compress.title=Komprimer
 compress.header=Komprimer PDF
-compress.credit=Denne tjenesten bruker Ghostscript for PDF-komprimering/optimisering.
+compress.credit=Denne tjenesten bruker qpdf for PDF-komprimering/optimisering.
 compress.selectText.1=Manuell modus - Fra 1 til 4
 compress.selectText.2=Optimeringsnivå:
 compress.selectText.3=4 (Dårlig for tekstbilder)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Endre
 #pdfToPDFA
 pdfToPDFA.title=PDF til PDF/A
 pdfToPDFA.header=PDF til PDF/A
-pdfToPDFA.credit=Denne tjenesten bruker ghostscript for PDF/A-konvertering
+pdfToPDFA.credit=Denne tjenesten bruker qpdf for PDF/A-konvertering
 pdfToPDFA.submit=Konverter
 pdfToPDFA.tip=Fungere for øyeblikket ikke for flere innganger samtidig
 pdfToPDFA.outputFormat=Utdataformat
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_pl_PL.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Podziel PDF według rozdziałów
 home.splitPdfByChapters.desc=Podział pliku PDF na wiele plików na podstawie struktury rozdziałów.
 splitPdfByChapters.tags=podział, rozdziały, zakładki, porządkowanie, organizacja
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Zamień-Odwróć-Kolor
 replace-color.header=Zamień-Odwróć kolor PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Tryb OCR
 ocr.selectText.11=Usuń obrazy po OCR (usuwa wszystkie obrazy, przydatne tylko, jeśli jest częścią etapu konwersji)
 ocr.selectText.12=Typ renderowania (zaawansowany)
 ocr.help=Przeczytaj tę dokumentację, aby dowiedzieć się, jak używać tego w innych językach i/lub nie używać docker
-ocr.credit=Ta usługa używa OCRmyPDF i Tesseract do OCR.
+ocr.credit=Ta usługa używa qpdf i Tesseract do OCR.
 ocr.submit=Przetwarzaj PDF za pomocą OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konwertuj na PDF
 #compress
 compress.title=Kompresuj
 compress.header=Kompresuj PDF
-compress.credit=Ta usługa używa Ghostscript do kompresji/optymalizacji PDF.
+compress.credit=Ta usługa używa qpdf do kompresji/optymalizacji PDF.
 compress.selectText.1=Tryb ręczny - Od 1 do 4
 compress.selectText.2=Poziom optymalizacji:
 compress.selectText.3=4 (Duże dla obrazów tekstowych)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Zmień
 #pdfToPDFA
 pdfToPDFA.title=PDF na PDF/A
 pdfToPDFA.header=PDF na PDF/A
-pdfToPDFA.credit=Ta usługa używa ghostscript do konwersji PDF/A
+pdfToPDFA.credit=Ta usługa używa qpdf do konwersji PDF/A
 pdfToPDFA.submit=Konwertuj
 pdfToPDFA.tip=Tylko jeden plik na raz
 pdfToPDFA.outputFormat=Format wyjściowy:
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Poziom Zakładek: Wybierz poziom zakładek, który ma zos
 splitByChapters.desc.3=Dołącz Metadane: Jeśli opcja ta jest zaznaczona, metadane oryginalnego pliku PDF zostaną uwzględnione w każdym rozdzielonych plików PDF.
 splitByChapters.desc.4=Zezwól na Duplikaty: Jeśli ta opcja jest zaznaczona, pozwala na tworzenie oddzielnych plików PDF przez wiele zakładek na tej samej stronie.
 splitByChapters.submit=Podziel PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_pt_BR.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Divide PDF por Capítulos
 home.splitPdfByChapters.desc=Divide um PDF em vários arquivos baseado na sua estrutura de capítulos.
 splitPdfByChapters.tags=dividir,capítulos,favoritos,organizar
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Substituir-Inverter-Cor
 replace-color.header=Substitui-Inverter Cor PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Modo OCR
 ocr.selectText.11=Remover imagens após o OCR (remove TODAS as imagens, útil apenas como parte do processo de conversão)
 ocr.selectText.12=Tipo de Renderização (avançado)
 ocr.help=Por favor, leia a documentação sobre como usar isso para outros idiomas e/ou fora do ambiente Docker
-ocr.credit=Este serviço usa OCRmyPDF e Tesseract para OCR.
+ocr.credit=Este serviço usa qpdf e Tesseract para OCR.
 ocr.submit=Processar PDF com OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Converter para PDF
 #compress
 compress.title=Comprimir
 compress.header=Comprimir PDF
-compress.credit=Este serviço usa o Ghostscript para compressão/otimização de PDF.
+compress.credit=Este serviço usa o qpdf para compressão/otimização de PDF.
 compress.selectText.1=Modo Manual - De 1 a 4
 compress.selectText.2=Nível de Otimização:
 compress.selectText.3=4 (Pior para imagens de texto)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Selecione PDF para adicionar a marca d'água:
 watermark.selectText.2=Texto da marca d'água:
 watermark.selectText.3=Tamanho da fonte:
 watermark.selectText.4=Rotação (0-360):
-watermark.selectText.5=widthSpacer (Espaço entre cada marca d'água horizontalmente):
-watermark.selectText.6=heightSpacer (Espaço entre cada marca d'água verticalmente):
+watermark.selectText.5=Width Spacer (Espaço entre cada marca d'água horizontalmente):
+watermark.selectText.6=Height Spacer (Espaço entre cada marca d'água verticalmente):
 watermark.selectText.7=Opacidade (0% - 100%):
 watermark.selectText.8=Tipo de marca d'água:
 watermark.selectText.9=Imagem da marca d'água:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Alterar
 #pdfToPDFA
 pdfToPDFA.title=PDF para PDF/A
 pdfToPDFA.header=PDF para PDF/A
-pdfToPDFA.credit=Este serviço usa ghostscript para conversão de PDF/A
+pdfToPDFA.credit=Este serviço usa qpdf para conversão de PDF/A
 pdfToPDFA.submit=Converter
 pdfToPDFA.tip=Atualmente não funciona para múltiplas entradas ao mesmo tempo
 pdfToPDFA.outputFormat=Formato de saída
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Nível de Marcador: Escolha o nível de marcador a ser us
 splitByChapters.desc.3=Incluir Metadados: Se marcado, os metadados do PDF original serão incluidos em cada divisão do PDF.
 splitByChapters.desc.4=Permitir Cópias: Se marcado, habilita vários marcadores na mesma página para criar PDFs separados.
 splitByChapters.submit=Dividir PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_pt_PT.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Dividir PDF por Capítulos
 home.splitPdfByChapters.desc=Divida um PDF em vários arquivos com base na estrutura dos capítulos.
 splitPdfByChapters.tags=dividir,capítulos,marcadores,organizar
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Substituir-Inverter Cor do PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Modo OCR
 ocr.selectText.11=Remover imagens após o OCR (remove TODAS as imagens, útil apenas como parte do processo de conversão)
 ocr.selectText.12=Tipo de renderização (avançado)
 ocr.help=Por favor, leia a documentação sobre como usar isso para outros idiomas e/ou fora do ambiente Docker
-ocr.credit=Este serviço usa OCRmyPDF e Tesseract para OCR.
+ocr.credit=Este serviço usa qpdf e Tesseract para OCR.
 ocr.submit=Processar PDF com OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Converter para PDF
 #compress
 compress.title=Comprimir
 compress.header=Comprimir PDF
-compress.credit=Este serviço usa o Ghostscript para compressão/otimização de PDF.
+compress.credit=Este serviço usa o qpdf para compressão/otimização de PDF.
 compress.selectText.1=Modo Manual - De 1 a 4
 compress.selectText.2=Nível de Otimização:
 compress.selectText.3=4 (Pior para imagens de texto)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Seleccione o PDF para Adicionar a Marca d'Água
 watermark.selectText.2=Texto da Marca d'Água
 watermark.selectText.3=Tamanho da Fonte
 watermark.selectText.4=Rotação (0-360)
-watermark.selectText.5=Espaçamento Horizontal (widthSpacer)
-watermark.selectText.6=Espaçamento Vertical (heightSpacer)
+watermark.selectText.5=Espaçamento Horizontal (Width Spacer)
+watermark.selectText.6=Espaçamento Vertical (Height Spacer)
 watermark.selectText.7=Opacidade (0% - 100%)
 watermark.selectText.8=Tipo de Marca d'Água
 watermark.selectText.9=Imagem da Marca d'Água
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Mudar
 #pdfToPDFA
 pdfToPDFA.title=PDF para PDF/A
 pdfToPDFA.header=PDF para PDF/A
-pdfToPDFA.credit=Este serviço usa ghostscript para Conversão de PDF/A
+pdfToPDFA.credit=Este serviço usa qpdf para Conversão de PDF/A
 pdfToPDFA.submit=Converter
 pdfToPDFA.tip=Actualmente não funciona para múltiplos inputs de uma só vez
 pdfToPDFA.outputFormat=Formato de saída
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Nível de Anotações: Escolha o nível das anotações a
 splitByChapters.desc.3=Inclua Metadados: Se marcado, os metadados originais do PDF serão incluídos em cada PDF dividido.
 splitByChapters.desc.4=Permitir Duplicatas: Se marcado, permite a criação de vários bookmarks na mesma página para criar separadamente vários PDFs.
 splitByChapters.submit=Dividir o PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_ro_RO.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Mod OCR
 ocr.selectText.11=Elimină imaginile după OCR (Elimină TOATE imaginile, util doar în etapa de conversie)
 ocr.selectText.12=Tip de redare (Avansat)
 ocr.help=Citiți documentația pentru a afla cum să utilizați acest serviciu pentru alte limbi și/sau în afara mediului Docker
-ocr.credit=Acest serviciu utilizează OCRmyPDF și Tesseract pentru OCR.
+ocr.credit=Acest serviciu utilizează qpdf și Tesseract pentru OCR.
 ocr.submit=Procesează PDF-ul cu OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Convertiți în PDF
 #compress
 compress.title=Comprimare
 compress.header=Comprimare PDF
-compress.credit=Acest serviciu utilizează OCRmyPDF pentru comprimarea/optimizarea PDF-urilor.
+compress.credit=Acest serviciu utilizează qpdf pentru comprimarea/optimizarea PDF-urilor.
 compress.selectText.1=Nivel de optimizare:
 compress.selectText.2=0 (Fără optimizare)
 compress.selectText.3=1 (Implicit, optimizare fără pierdere)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Schimbă
 #pdfToPDFA
 pdfToPDFA.title=PDF către PDF/A
 pdfToPDFA.header=PDF către PDF/A
-pdfToPDFA.credit=Acest serviciu utilizează ghostscript pentru conversia în PDF/A
+pdfToPDFA.credit=Acest serviciu utilizează qpdf pentru conversia în PDF/A
 pdfToPDFA.submit=Convertește
 pdfToPDFA.tip=În prezent nu funcționează pentru mai multe intrări simultan
 pdfToPDFA.outputFormat=Format de ieșire
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_ru_RU.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Разделить PDF по разделам
 home.splitPdfByChapters.desc=Разделите PDF на несколько файлов на основе структуры его разделов
 splitPdfByChapters.tags=разделение, разделы, закладки, организация
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Заменить-Обратное изменение цвета PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR режим
 ocr.selectText.11=Удалить изображения после OCR (удаляет ВСЕ изображения, полезно только в том случае, если они являются частью шага преобразования)
 ocr.selectText.12=Тип рендера (расширенный)
 ocr.help=Прочтите эту документацию о том, как использовать это для других языков и/или использовать не в докере.
-ocr.credit=Этот сервис использует OCRmyPDF и Tesseract для OCR.
+ocr.credit=Этот сервис использует qpdf и Tesseract для OCR.
 ocr.submit=Обработка PDF с OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Преобразовать в PDF
 #compress
 compress.title=Сжать
 compress.header=Сжать PDF
-compress.credit=Эта служба использует Ghostscript для сжатия/оптимизации PDF.
+compress.credit=Эта служба использует qpdf для сжатия/оптимизации PDF.
 compress.selectText.1=Ручной режим - от 1 до 4
 compress.selectText.2=Уровень оптимизации:
 compress.selectText.3=4 (Ужасно для текстовых изображений)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Выберите PDF, чтобы добавить вод
 watermark.selectText.2=Текст водяного знака:
 watermark.selectText.3=Размер шрифта:
 watermark.selectText.4=Поворот (0-360):
-watermark.selectText.5=widthSpacer (пробел между каждым водяным знаком по горизонтали):
-watermark.selectText.6=heightSpacer (пробел между каждым водяным знаком по вертикали):
+watermark.selectText.5=Width Spacer (пробел между каждым водяным знаком по горизонтали):
+watermark.selectText.6=Height Spacer (пробел между каждым водяным знаком по вертикали):
 watermark.selectText.7=Непрозрачность (0% - 100%):
 watermark.selectText.8=Тип водяного знака:
 watermark.selectText.9=Изображение водяного знака:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Изменить
 #pdfToPDFA
 pdfToPDFA.title=PDF в PDF/A
 pdfToPDFA.header=PDF в PDF/A
-pdfToPDFA.credit=Этот сервис использует ghostscript для преобразования PDF/A
+pdfToPDFA.credit=Этот сервис использует qpdf для преобразования PDF/A
 pdfToPDFA.submit=Конвертировать
 pdfToPDFA.tip=В настоящее время не поддерживается при нескольких входных данных одновременно
 pdfToPDFA.outputFormat=Формат вывода
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Уровень закладки: выберите уро
 splitByChapters.desc.3=Включить метаданные: если эта опция отмечена, метаданные исходного PDF будут включены в каждый разбитый PDF.
 splitByChapters.desc.4=Позволять дубликаты: если эта опция отмечена, на одной странице могут быть созданы несколько PDF из-за нескольких одинаковых закладок.
 splitByChapters.submit=Разделить PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_sk_SK.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR režim
 ocr.selectText.11=Odstrániť obrázky po OCR (Odstráni VŠETKY obrázky, užitočné iba ak je súčasťou konverzného kroku)
 ocr.selectText.12=Typ vykreslenia (Pokročilé)
 ocr.help=Prosím, prečítajte si túto dokumentáciu o tom, ako používať OCR pre iné jazyky a/alebo použitie mimo docker
-ocr.credit=Táto služba používa OCRmyPDF a Tesseract pre OCR.
+ocr.credit=Táto služba používa qpdf a Tesseract pre OCR.
 ocr.submit=Spracovať PDF s OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konvertovať do PDF
 #compress
 compress.title=Komprimovať
 compress.header=Komprimovať PDF
-compress.credit=Táto služba používa Ghostscript pre kompresiu/optimalizáciu PDF.
+compress.credit=Táto služba používa qpdf pre kompresiu/optimalizáciu PDF.
 compress.selectText.1=Manuálny režim - Od 1 do 4
 compress.selectText.2=Úroveň optimalizácie:
 compress.selectText.3=4 (Hrozné pre textové obrázky)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Zmeniť
 #pdfToPDFA
 pdfToPDFA.title=PDF na PDF/A
 pdfToPDFA.header=PDF na PDF/A
-pdfToPDFA.credit=Táto služba používa ghostscript na konverziu PDF/A
+pdfToPDFA.credit=Táto služba používa qpdf na konverziu PDF/A
 pdfToPDFA.submit=Konvertovať
 pdfToPDFA.tip=Momentálne nefunguje pre viacero vstupov naraz
 pdfToPDFA.outputFormat=Výstupný formát
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_sr_LATN_RS.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Režim OCR-a
 ocr.selectText.11=Ukloni slike nakon OCR-a (Uklanja SVE slike, korisno samo ako je deo koraka konverzije)
 ocr.selectText.12=Tip rendiranja (Napredno)
 ocr.help=Molimo vas da pročitate ovu dokumentaciju o tome kako koristiti ovo za druge jezike i/ili korišćenje van docker-a
-ocr.credit=Ova usluga koristi OCRmyPDF i Tesseract za OCR.
+ocr.credit=Ova usluga koristi qpdf i Tesseract za OCR.
 ocr.submit=Obradi PDF sa OCR-om
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konvertuj u PDF
 #compress
 compress.title=Kompresija
 compress.header=Kompresuj PDF
-compress.credit=Ova usluga koristi Ghostscript za kompresiju / optimizaciju PDF-a.
+compress.credit=Ova usluga koristi qpdf za kompresiju / optimizaciju PDF-a.
 compress.selectText.1=Ručni režim - Od 1 do 4
 compress.selectText.2=Nivo optimizacije:
 compress.selectText.3=4 (Užasno za tekstualne slike)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Promeni
 #pdfToPDFA
 pdfToPDFA.title=PDF u PDF/A
 pdfToPDFA.header=PDF u PDF/A
-pdfToPDFA.credit=Ova usluga koristi ghostscript za konverziju u PDF/A format
+pdfToPDFA.credit=Ova usluga koristi qpdf za konverziju u PDF/A format
 pdfToPDFA.submit=Konvertuj
 pdfToPDFA.tip=Currently does not work for multiple inputs at once
 pdfToPDFA.outputFormat=Output format
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_sv_SE.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Dela upp PDF efter kapitel
 home.splitPdfByChapters.desc=Dela upp en PDF till flera filer baserat på dess kapitelstruktur.
 splitPdfByChapters.tags=dela,kapitel,bokmärken,organisera
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Ersätt-Invertera färg på PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR-läge
 ocr.selectText.11=Ta bort bilder efter OCR (tar bort ALLA bilder, endast användbart som en del av konverteringssteget)
 ocr.selectText.12=Renderingstyp (avancerat)
 ocr.help=Vänligen läs denna dokumentation om hur du använder detta för andra språk och/eller använder inte i docker
-ocr.credit=Denna tjänst använder OCRmyPDF och Tesseract för OCR.
+ocr.credit=Denna tjänst använder qpdf och Tesseract för OCR.
 ocr.submit=Bearbeta PDF med OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Konvertera till PDF
 #compress
 compress.title=Komprimera
 compress.header=Komprimera PDF
-compress.credit=Denna tjänst använder Ghostscript för PDF-komprimering/optimering.
+compress.credit=Denna tjänst använder qpdf för PDF-komprimering/optimering.
 compress.selectText.1=Manuellt läge - Från 1 till 4
 compress.selectText.2=Optimeringsnivå:
 compress.selectText.3=4 (Fruktansvärt för textbilder)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Välj PDF för att lägga till vattenstämpel till:
 watermark.selectText.2=Vattenmärkestext:
 watermark.selectText.3=Teckenstorlek:
 watermark.selectText.4=Vändning (0-360):
-watermark.selectText.5=widthSpacer (mellanrum mellan varje vattenstämpel horisontellt):
-watermark.selectText.6=heightSpacer (mellanrum mellan varje vattenstämpel vertikalt):
+watermark.selectText.5=Width Spacer (mellanrum mellan varje vattenstämpel horisontellt):
+watermark.selectText.6=Height Spacer (mellanrum mellan varje vattenstämpel vertikalt):
 watermark.selectText.7=Opacitet (0% - 100%):
 watermark.selectText.8=Vattenstämpeltyp:
 watermark.selectText.9=Vattenstämpelbild:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Ändra
 #pdfToPDFA
 pdfToPDFA.title=PDF till PDF/A
 pdfToPDFA.header=PDF till PDF/A
-pdfToPDFA.credit=Denna tjänst använder ghostscript för PDF/A-konvertering
+pdfToPDFA.credit=Denna tjänst använder qpdf för PDF/A-konvertering
 pdfToPDFA.submit=Konvertera
 pdfToPDFA.tip=Fungerar för närvarande inte för flera inmatningar samtidigt
 pdfToPDFA.outputFormat=Utdataformat
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bokmärkesnivå: Välj nivån av bokmärken att använda
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Tillåt duplicieringar: Om kryssrutan är markerad tillåts flera bokmärken på samma sida skapa individuella PDF:er.
 splitByChapters.submit=Dela upp PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_th_TH.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=โหมด OCR
 ocr.selectText.11=ลบภาพหลังจาก OCR (ลบภาพทั้งหมด, มีประโยชน์เฉพาะหากเป็นส่วนหนึ่งของขั้นตอนการแปลง)
 ocr.selectText.12=ประเภทการเรนเดอร์ (ขั้นสูง)
 ocr.help=โปรดอ่านเอกสารนี้เพื่อใช้งานภาษาอื่นๆ และ/หรือใช้งานนอก docker
-ocr.credit=บริการนี้ใช้ OCRmyPDF และ Tesseract สำหรับ OCR
+ocr.credit=บริการนี้ใช้ qpdf และ Tesseract สำหรับ OCR
 ocr.submit=ประมวลผล PDF ด้วย OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=แปลงเป็น PDF
 #compress
 compress.title=บีบอัด
 compress.header=บีบอัด PDF
-compress.credit=บริการนี้ใช้ Ghostscript สำหรับการบีบอัด/การเพิ่มประสิทธิภาพ PDF
+compress.credit=บริการนี้ใช้ qpdf สำหรับการบีบอัด/การเพิ่มประสิทธิภาพ PDF
 compress.selectText.1=โหมดแมนนวล - จาก 1 ถึง 4
 compress.selectText.2=ระดับการเพิ่มประสิทธิภาพ:
 compress.selectText.3=4 (ไม่ดีสำหรับภาพข้อความ)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=เปลี่ยน
 #pdfToPDFA
 pdfToPDFA.title=PDF เป็น PDF/A
 pdfToPDFA.header=PDF เป็น PDF/A
-pdfToPDFA.credit=บริการนี้ใช้ ghostscript สำหรับการแปลง PDF/A
+pdfToPDFA.credit=บริการนี้ใช้ qpdf สำหรับการแปลง PDF/A
 pdfToPDFA.submit=แปลง
 pdfToPDFA.tip=ปัจจุบันไม่ทำงานสำหรับการป้อนข้อมูลหลายรายการพร้อมกัน
 pdfToPDFA.outputFormat=รูปแบบผลลัพธ์
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=ระดับบุคคลที่ได้รับ
 splitByChapters.desc.3=รวมข้อมูลเสริม: หากถูกเลือก ข้อมูลเสริมของไฟล์ PDF ที่เดิมจะถูกรวมอยู่ในแต่ละไฟล์ที่แบ่งออก
 splitByChapters.desc.4=อนุญาตให้มีการซ้ำ: หากถูกเลือก จะทำให้สามารถสร้างไฟล์ PDF แยกออกมาจากหน้าเดียวกันได้หลายรายการ
 splitByChapters.submit=แบ่งไฟล์ PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_tr_TR.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR Modu
 ocr.selectText.11=OCR'den sonra resimleri kaldır (TÜM resimleri kaldırır, sadece dönüşüm adımının bir parçasıysa yararlıdır)
 ocr.selectText.12=Render Türü (İleri Seviye)
 ocr.help=Lütfen bu belgede başka dillerde nasıl kullanılacağı ve/veya docker'da kullanılmaması hakkında bilgi edinin
-ocr.credit=Bu hizmet OCR için OCRmyPDF ve Tesseract'ı kullanır.
+ocr.credit=Bu hizmet OCR için qpdf ve Tesseract'ı kullanır.
 ocr.submit=PDF'i OCR(Metin Tanıma) ile İşle
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=PDF'e Dönüştür
 #compress
 compress.title=Sıkıştır
 compress.header=PDF'i Sıkıştır
-compress.credit=Bu hizmet PDF Sıkıştırma/Optimizasyonu için Ghostscript kullanır.
+compress.credit=Bu hizmet PDF Sıkıştırma/Optimizasyonu için qpdf kullanır.
 compress.selectText.1=Manuel Mod - 1'den 4'e
 compress.selectText.2=Optimizasyon seviyesi:
 compress.selectText.3=4 (Metin resimleri için hiç uygun değil)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Değiştir
 #pdfToPDFA
 pdfToPDFA.title=PDF'den PDF/A'ya
 pdfToPDFA.header=PDF'den PDF/A'ya
-pdfToPDFA.credit=Bu hizmet PDF/A dönüşümü için ghostscript kullanır
+pdfToPDFA.credit=Bu hizmet PDF/A dönüşümü için qpdf kullanır
 pdfToPDFA.submit=Dönüştür
 pdfToPDFA.tip=Şu anda aynı anda birden fazla giriş için çalışmıyor
 pdfToPDFA.outputFormat=Çıkış formatı
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_uk_UA.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Режим OCR
 ocr.selectText.11=Видалити зображення після OCR (видаляє ВСІ зображення, корисно лише в тому випадку, якщо вони є частиною етапу перетворення)
 ocr.selectText.12=Тип рендеру (розширений)
 ocr.help=Прочитайте цю документацію про те, як використовувати це для інших мов і/або використовувати не в докері.
-ocr.credit=Цей сервіс використовує OCRmyPDF та Tesseract для OCR.
+ocr.credit=Цей сервіс використовує qpdf та Tesseract для OCR.
 ocr.submit=Обробка PDF з OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Перетворити у PDF
 #compress
 compress.title=Стиснути
 compress.header=Стиснути PDF
-compress.credit=Ця служба використовує Ghostscript для стиснення/оптимізації PDF.
+compress.credit=Ця служба використовує qpdf для стиснення/оптимізації PDF.
 compress.selectText.1=Ручний режим - від 1 до 4
 compress.selectText.2=Рівень оптимізації:
 compress.selectText.3=4 (Жахливо для текстових зображень)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=Виберіть PDF, щоб додати водяний
 watermark.selectText.2=Текст водяного знаку:
 watermark.selectText.3=Розмір шрифту:
 watermark.selectText.4=Обертання (0-360):
-watermark.selectText.5=widthSpacer (проміжок між кожним водяним знаком по горизонталі):
-watermark.selectText.6=heightSpacer (проміжок між кожним водяним знаком по вертикалі):
+watermark.selectText.5=Width Spacer (проміжок між кожним водяним знаком по горизонталі):
+watermark.selectText.6=Height Spacer (проміжок між кожним водяним знаком по вертикалі):
 watermark.selectText.7=Непрозорість (0% - 100%):
 watermark.selectText.8=Тип водяного знаку:
 watermark.selectText.9=Зображення водяного знаку:
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Змінити
 #pdfToPDFA
 pdfToPDFA.title=PDF в PDF/A
 pdfToPDFA.header=PDF в PDF/A
-pdfToPDFA.credit=Цей сервіс використовує ghostscript для перетворення у формат PDF/A
+pdfToPDFA.credit=Цей сервіс використовує qpdf для перетворення у формат PDF/A
 pdfToPDFA.submit=Конвертувати
 pdfToPDFA.tip=Наразі не працює для кількох вхідних файлів одночасно
 pdfToPDFA.outputFormat=Вихідний формат
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_vi_VN.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=Chế độ OCR
 ocr.selectText.11=Xóa hình ảnh sau khi OCR (Xóa TẤT CẢ hình ảnh, chỉ hữu ích nếu là một phần của bước chuyển đổi)
 ocr.selectText.12=Loại hiển thị (Nâng cao)
 ocr.help=Vui lòng đọc tài liệu này về cách sử dụng cho các ngôn ngữ khác và/hoặc sử dụng không trong docker
-ocr.credit=Dịch vụ này sử dụng OCRmyPDF và Tesseract cho OCR.
+ocr.credit=Dịch vụ này sử dụng qpdf và Tesseract cho OCR.
 ocr.submit=Xử lý PDF với OCR
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=Chuyển đổi sang PDF
 #compress
 compress.title=Nén
 compress.header=Nén PDF
-compress.credit=Dịch vụ này sử dụng Ghostscript để Nén/Tối ưu hóa PDF.
+compress.credit=Dịch vụ này sử dụng qpdf để Nén/Tối ưu hóa PDF.
 compress.selectText.1=Chế độ thủ công - Từ 1 đến 4
 compress.selectText.2=Mức độ tối ưu hóa:
 compress.selectText.3=4 (Tệ cho hình ảnh văn bản)
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=Thay đổi
 #pdfToPDFA
 pdfToPDFA.title=PDF sang PDF/A
 pdfToPDFA.header=PDF sang PDF/A
-pdfToPDFA.credit=Dịch vụ này sử dụng ghostscript để chuyển đổi PDF/A
+pdfToPDFA.credit=Dịch vụ này sử dụng qpdf để chuyển đổi PDF/A
 pdfToPDFA.submit=Chuyển đổi
 pdfToPDFA.tip=Hiện tại không hoạt động với nhiều đầu vào cùng lúc
 pdfToPDFA.outputFormat=Định dạng đầu ra
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_zh_CN.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=Split PDF by Chapters
 home.splitPdfByChapters.desc=Split a PDF into multiple files based on its chapter structure.
 splitPdfByChapters.tags=split,chapters,bookmarks,organize
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=Replace-Invert-Color
 replace-color.header=Replace-Invert Color PDF
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR模式
 ocr.selectText.11=OCR后移除图像（移除所有图像，只有在转换步骤中才有用）。
 ocr.selectText.12=渲染类型（高级）
 ocr.help=请阅读此文档，了解如何将其用于其他语言和/或不在docker中使用。
-ocr.credit=此服务使用OCRmyPDF和Tesseract进行OCR。
+ocr.credit=此服务使用qpdf和Tesseract进行OCR。
 ocr.submit=用OCR处理PDF
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=转换为 PDF
 #compress
 compress.title=压缩
 compress.header=压缩PDF
-compress.credit=此服务使用Ghostscript进行PDF压缩/优化。
+compress.credit=此服务使用qpdf进行PDF压缩/优化。
 compress.selectText.1=手动模式 - 从 1 到 4
 compress.selectText.2=优化级别：
 compress.selectText.3=4（文本图像很糟糕）
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1112,7 +1118,7 @@ changeMetadata.submit=更改
 #pdfToPDFA
 pdfToPDFA.title=PDF转PDF/A
 pdfToPDFA.header=将PDF转换为PDF/A
-pdfToPDFA.credit=此服务使用ghostscript进行PDF/A转换
+pdfToPDFA.credit=此服务使用qpdf进行PDF/A转换
 pdfToPDFA.submit=转换
 pdfToPDFA.tip=目前不支持上传多个
 pdfToPDFA.outputFormat=输出格式
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=Bookmark Level: Choose the level of bookmarks to use for
 splitByChapters.desc.3=Include Metadata: If checked, the original PDF's metadata will be included in each split PDF.
 splitByChapters.desc.4=Allow Duplicates: If checked, allows multiple bookmarks on the same page to create separate PDFs.
 splitByChapters.submit=Split PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/messages_zh_TW.properties

@@ -512,6 +512,10 @@ home.splitPdfByChapters.title=依章節分割 PDF
 home.splitPdfByChapters.desc=根據 PDF 的章節結構將其分割成多個檔案。
 splitPdfByChapters.tags=分割,章節,書籤,整理
 
+home.validateSignature.title=Validate PDF Signature
+home.validateSignature.desc=Verify digital signatures and certificates in PDF documents
+validateSignature.tags=signature,verify,validate,pdf,certificate,digital signature,Validate Signature,Validate certificate
+
 #replace-invert-color
 replace-color.title=取代-反轉顏色
 replace-color.header=取代-反轉 PDF 顏色
@@ -868,7 +872,7 @@ ocr.selectText.10=OCR 模式
 ocr.selectText.11=移除 OCR 後的影像（移除所有影像，只有在轉換步驟中才有用）
 ocr.selectText.12=渲染類型（進階）
 ocr.help=請閱讀此文件，了解如何使用其他語言和/或在 Docker 中使用
-ocr.credit=此服務使用 OCRmyPDF 和 Tesseract 進行 OCR。
+ocr.credit=此服務使用 qpdf 和 Tesseract 進行 OCR。
 ocr.submit=使用 OCR 處理 PDF
 
 
@@ -892,7 +896,7 @@ fileToPDF.submit=轉換為 PDF
 #compress
 compress.title=壓縮
 compress.header=壓縮 PDF
-compress.credit=此服務使用 Ghostscript 進行 PDF 壓縮/最佳化。
+compress.credit=此服務使用 qpdf 進行 PDF 壓縮/最佳化。
 compress.selectText.1=手動模式 - 從 1 到 4
 compress.selectText.2=最佳化等級：
 compress.selectText.3=4（對於含有文字的影像來說結果很糟）
@@ -958,6 +962,8 @@ multiTool.moveLeft=Move Left
 multiTool.moveRight=Move Right
 multiTool.delete=Delete
 multiTool.dragDropMessage=Page(s) Selected
+multiTool.undo=Undo
+multiTool.redo=Redo
 
 #multiTool-advert
 multiTool-advert.message=This feature is also available in our <a href="{0}">multi-tool page</a>. Check it out for enhanced page-by-page UI and additional features!
@@ -1054,8 +1060,8 @@ watermark.selectText.1=選擇要新增浮水印的 PDF：
 watermark.selectText.2=浮水印文字：
 watermark.selectText.3=字型大小：
 watermark.selectText.4=旋轉（0-360）：
-watermark.selectText.5=widthSpacer（每個浮水印之間的水平間距）：
-watermark.selectText.6=heightSpacer（每個浮水印之間的垂直間距）：
+watermark.selectText.5=Width Spacer（每個浮水印之間的水平間距）：
+watermark.selectText.6=Height Spacer（每個浮水印之間的垂直間距）：
 watermark.selectText.7=不透明度（0% - 100%）：
 watermark.selectText.8=浮水印類型：
 watermark.selectText.9=浮水印影像：
@@ -1112,7 +1118,7 @@ changeMetadata.submit=變更
 #pdfToPDFA
 pdfToPDFA.title=PDF 轉 PDF/A
 pdfToPDFA.header=PDF 轉 PDF/A
-pdfToPDFA.credit=此服務使用 ghostscript 進行 PDF/A 轉換
+pdfToPDFA.credit=此服務使用 qpdf 進行 PDF/A 轉換
 pdfToPDFA.submit=轉換
 pdfToPDFA.tip=目前不支援上傳多個
 pdfToPDFA.outputFormat=輸出格式
@@ -1260,3 +1266,52 @@ splitByChapters.desc.2=書籤層級：選擇用於分割的書籤層級（0 表
 splitByChapters.desc.3=包含中繼資料：如果勾選，原始 PDF 的中繼資料將包含在每個分割後的 PDF 中。
 splitByChapters.desc.4=允許重複：如果勾選，允許同一頁面上的多個書籤建立獨立的 PDF。
 splitByChapters.submit=分割 PDF
+
+#File Chooser
+fileChooser.click=Click
+fileChooser.or=or
+fileChooser.dragAndDrop=Drag & Drop
+fileChooser.hoveredDragAndDrop=Drag & Drop file(s) here
+
+#release notes
+releases.footer=Releases
+releases.title=Release Notes
+releases.header=Release Notes
+releases.current.version=Current Release
+releases.note=Release notes are only available in English
+
+#Validate Signature
+#Validate Signature
+validateSignature.title=Validate PDF Signatures
+validateSignature.header=Validate Digital Signatures
+validateSignature.selectPDF=Select signed PDF file
+validateSignature.submit=Validate Signatures
+validateSignature.results=Validation Results
+validateSignature.status=Status
+validateSignature.signer=Signer
+validateSignature.date=Date
+validateSignature.reason=Reason
+validateSignature.location=Location
+validateSignature.noSignatures=No digital signatures found in this document
+validateSignature.status.valid=Valid
+validateSignature.status.invalid=Invalid
+validateSignature.chain.invalid=Certificate chain validation failed - cannot verify signer's identity
+validateSignature.trust.invalid=Certificate not in trust store - source cannot be verified
+validateSignature.cert.expired=Certificate has expired
+validateSignature.cert.revoked=Certificate has been revoked
+validateSignature.signature.info=Signature Information
+validateSignature.signature=Signature
+validateSignature.signature.mathValid=Signature is mathematically valid BUT:
+validateSignature.selectCustomCert=Custom Certificate File X.509 (Optional)
+validateSignature.cert.info=Certificate Details
+validateSignature.cert.issuer=Issuer
+validateSignature.cert.subject=Subject
+validateSignature.cert.serialNumber=Serial Number
+validateSignature.cert.validFrom=Valid From
+validateSignature.cert.validUntil=Valid Until
+validateSignature.cert.algorithm=Algorithm
+validateSignature.cert.keySize=Key Size
+validateSignature.cert.version=Version
+validateSignature.cert.keyUsage=Key Usage
+validateSignature.cert.selfSigned=Self-Signed
+validateSignature.cert.bits=bits

src/main/resources/settings.yml.template

@@ -16,7 +16,7 @@ security:
   csrfDisabled: true # set to 'true' to disable CSRF protection (not recommended for production)
   loginAttemptCount: 5 # lock user account after 5 tries; when using e.g. Fail2Ban you can deactivate the function with -1
   loginResetTimeMinutes: 120 # lock account for 2 hours after x attempts
-  loginMethod: all # 'all' (Login Username/Password and OAuth2[must be enabled and configured]), 'normal'(only Login with Username/Password) or 'oauth2'(only Login with OAuth2)
+  loginMethod: all # Accepts values like 'all' and 'normal'(only Login with Username/Password), 'oauth2'(only Login with OAuth2) or 'saml2'(only Login with SAML2) 
   initialLogin:
     username: '' # initial username for the first login
     password: '' # initial password for the first login
@@ -42,14 +42,14 @@ security:
     issuer: '' # set to any provider that supports OpenID Connect Discovery (/.well-known/openid-configuration) endpoint
     clientId: '' # client ID from your provider
     clientSecret: '' # client secret from your provider
-    autoCreateUser: false # set to 'true' to allow auto-creation of non-existing users
+    autoCreateUser: true # set to 'true' to allow auto-creation of non-existing users
     blockRegistration: false # set to 'true' to deny login with SSO without prior registration by an admin
     useAsUsername: email # default is 'email'; custom fields can be used as the username
     scopes: openid, profile, email # specify the scopes for which the application will request permissions
     provider: google # set this to your OAuth provider's name, e.g., 'google' or 'keycloak'
   saml2:
-    enabled: false # currently in alpha, not recommended for use yet, enableAlphaFunctionality must be set to true
-    autoCreateUser: false # set to 'true' to allow auto-creation of non-existing users
+    enabled: false # Only enabled for paid enterprise clients (enterpriseEdition.enabled must be true)
+    autoCreateUser: true # set to 'true' to allow auto-creation of non-existing users
     blockRegistration: false # set to 'true' to deny login with SSO without prior registration by an admin
     registrationId: stirling
     idpMetadataUri: https://dev-XXXXXXXX.okta.com/app/externalKey/sso/saml/metadata
@@ -107,9 +107,9 @@ processExecutor:
   sessionLimit:    # Process executor instances limits
     libreOfficeSessionLimit: 1
     pdfToHtmlSessionLimit: 1
-    ocrMyPdfSessionLimit: 2
+    qpdfSessionLimit: 4
+    tesseractSessionLimit: 1
     pythonOpenCvSessionLimit: 8
-    ghostScriptSessionLimit: 16
     weasyPrintSessionLimit: 16
     installAppSessionLimit: 1
     calibreSessionLimit: 1
@@ -117,7 +117,7 @@ processExecutor:
     libreOfficetimeoutMinutes: 30
     pdfToHtmltimeoutMinutes: 20
     pythonOpenCvtimeoutMinutes: 30
-    ghostScripttimeoutMinutes: 30
     weasyPrinttimeoutMinutes: 30
     installApptimeoutMinutes: 60
     calibretimeoutMinutes: 30
+    tesseractTimeoutMinutes: 30

src/main/resources/static/3rdPartyLicenses.json

@@ -407,7 +407,7 @@
         {
             "moduleName": "commons-io:commons-io",
             "moduleUrl": "https://commons.apache.org/proper/commons-io/",
-            "moduleVersion": "2.17.0",
+            "moduleVersion": "2.18.0",
             "moduleLicense": "Apache-2.0",
             "moduleLicenseUrl": "https://www.apache.org/licenses/LICENSE-2.0.txt"
         },
@@ -1386,6 +1386,13 @@
             "moduleLicense": "Apache License, Version 2.0",
             "moduleLicenseUrl": "https://www.apache.org/licenses/LICENSE-2.0"
         },
+        {
+            "moduleName": "org.springframework.session:spring-session-core",
+            "moduleUrl": "https://spring.io/projects/spring-session",
+            "moduleVersion": "3.4.0",
+            "moduleLicense": "Apache License, Version 2.0",
+            "moduleLicenseUrl": "https://www.apache.org/licenses/LICENSE-2.0"
+        },
         {
             "moduleName": "org.springframework:spring-aop",
             "moduleUrl": "https://github.com/spring-projects/spring-framework",

src/main/resources/static/css/fileSelect.css

@@ -1,10 +1,221 @@
+.custom-file-chooser {
+  display: flex;
+  flex-direction: column;
+  position: relative;
+
+  min-height: 55px;
+  border-radius: 1rem;
+  --selected-files-display: none;
+}
+
+.input-container {
+  position: relative;
+  border-radius: 1rem;
+  border: 1px dashed rgb(105, 116, 134);
+
+  column-gap: 7px;
+  row-gap: 7px;
+  height: 150px;
+  width: 100%;
+
+  --overlay-display: none;
+  transition: background-color 0.5s linear;
+}
+
+.input-container:hover {
+  outline: none;
+  border: none;
+  background-color: var(--md-sys-color-surface-container-low);
+
+ -webkit-transition:  box-shadow 1s ease, background-color 2s linear;
+ -moz-transition:  box-shadow 1s ease, background-color 2s linear;
+ -o-transition:  box-shadow 1s ease, background-color 2s linear;
+ -ms-transition: box-shadow 1s ease, background-color 2s linear;
+ transition: box-shadow 1s ease, background-color 2s linear;
+
+ box-shadow: 0 0 10px rgb(105, 116, 134);
+ cursor: pointer;
+}
+
+.input-container * {
+  user-select: none;
+  pointer-events: none;
+}
+
+
+.input-container::before {
+  display: var(--overlay-display);
+  position: absolute;
+
+  content: '';
+
+  top: 0;
+  left: 0;
+
+  height: 100%;
+  width: 100%;
+
+  background-color: var(--md-sys-color-surface);
+  z-index: 1;
+
+  white-space: pre;
+  border-radius: 1rem;
+}
+
+.input-container::after {
+  display: var(--overlay-display);
+  position: absolute;
+
+  content: attr(data-text);
+  font-size: 0.9rem;
+  font-weight: 550;
+  color: var(--md-sys-color-on-surface);
+
+  background-color: transparent;
+
+  min-width: 150px;
+
+  top: 50%;
+  left: 50%;
+
+  transform: translateX(-50%) translateY(-50%);
+  text-align: center;
+
+  z-index: 2;
+}
+
+.input-container input[type="file"] {
+  display: none;
+}
+
+.input-container div:nth-of-type(2) {
+  color: var(--md-sys-color-on-surface);
+}
+
+.input-container div:nth-of-type(1), .input-container div:nth-of-type(3) {
+  color: var(--md-sys-color-on-surface);
+  font-size: 16px;
+  font-weight: bold;
+}
+
+.file-input-btn {
+  display: inline-block;
+
+  border: 1px solid #ccc;
+  padding: 6px 12px;
+  cursor: pointer;
+
+  color: #212529;
+  font-size: 1rem;
+  border-radius: 3rem;
+
+  background-color: #DDE0E3;
+}
+
+.small-file-container {
+  padding-top: 1px;
+  position: relative;
+  row-gap: 1px;
+  height: 60px;
+  width: 60px;
+}
+
+.file-icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 30px;
+  width: 30px;
+}
+
+.file-icon * {
+  height: inherit;
+  width: inherit;
+}
+
+.file-info {
+  min-width: 0;
+}
+
+.file-info > div:nth-child(1) {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  color: var(--md-sys-color-on-surface);
+
+  max-width: 60px;
+  font-size: 0.75rem;
+}
+
+.file-info > div:nth-child(2) {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  color: grey;
+
+  max-width: 60px;
+  font-size: 10px;
+}
+
+.remove-selected-file {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+
+  position: absolute;
+  height: 15px;
+  width: 15px;
+
+  right: 10px;
+  top: -5px;
+}
+
+.remove-selected-file * {
+  overflow: hidden;
+  height: inherit;
+  width: inherit;
+  z-index: 3;
+  pointer-events: none;
+  user-select: none;
+}
+
+.remove-selected-file:after {
+  content: '';
+  position: absolute;
+
+  left: 1;
+
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+
+  background-color: white;
+  z-index: 2;
+
+  user-select: none;
+  pointer-events: none;
+}
+
+.remove-selected-file:hover {
+  cursor: pointer;
+}
+
 .custom-file-label {
   padding-right: 90px;
 }
 
 .selected-files {
-  margin-top: 10px;
-  max-height: 150px;
-  overflow-y: auto;
+  display: var(--selected-files-display);
+  padding-left: 5px;
+  padding-right: 3px;
+  padding-top: 15px;
+  padding-bottom: 15px;
+
+  flex: 1;
   white-space: pre-wrap;
+
+  row-gap: 12px;
+  column-gap: 5px;
+
+  border-radius: 1rem;
+  border: 1px solid rgb(105, 116, 134, 0.5);
 }

src/main/resources/static/js/downloader.js

@@ -1,26 +1,36 @@
-(function() {
+(function () {
+  if (window.isDownloadScriptInitialized) return; // Prevent re-execution
+  window.isDownloadScriptInitialized = true;
 
-  const { pdfPasswordPrompt, multipleInputsForSingleRequest, disableMultipleFiles, remoteCall, sessionExpired, refreshPage, error } = window.stirlingPDF;
+  const {
+    pdfPasswordPrompt,
+    multipleInputsForSingleRequest,
+    disableMultipleFiles,
+    remoteCall,
+    sessionExpired,
+    refreshPage,
+    error,
+  } = window.stirlingPDF;
 
   function showErrorBanner(message, stackTrace) {
-    const errorContainer = document.getElementById("errorContainer");
-    errorContainer.style.display = "block"; // Display the banner
-    errorContainer.querySelector(".alert-heading").textContent = error;
-    errorContainer.querySelector("p").textContent = message;
-    document.querySelector("#traceContent").textContent = stackTrace;
+    const errorContainer = document.getElementById('errorContainer');
+    errorContainer.style.display = 'block'; // Display the banner
+    errorContainer.querySelector('.alert-heading').textContent = error;
+    errorContainer.querySelector('p').textContent = message;
+    document.querySelector('#traceContent').textContent = stackTrace;
   }
 
   function showSessionExpiredPrompt() {
-    const errorContainer = document.getElementById("errorContainer");
-    errorContainer.style.display = "block";
-    errorContainer.querySelector(".alert-heading").textContent = sessionExpired;
-    errorContainer.querySelector("p").textContent = sessionExpired;
-    document.querySelector("#traceContent").textContent = "";
+    const errorContainer = document.getElementById('errorContainer');
+    errorContainer.style.display = 'block';
+    errorContainer.querySelector('.alert-heading').textContent = sessionExpired;
+    errorContainer.querySelector('p').textContent = sessionExpired;
+    document.querySelector('#traceContent').textContent = '';
 
     // Optional: Add a refresh button
-    const refreshButton = document.createElement("button");
+    const refreshButton = document.createElement('button');
     refreshButton.textContent = refreshPage;
-    refreshButton.className = "btn btn-primary mt-3";
+    refreshButton.className = 'btn btn-primary mt-3';
     refreshButton.onclick = () => location.reload();
     errorContainer.appendChild(refreshButton);
   }
@@ -28,19 +38,19 @@
   let firstErrorOccurred = false;
 
   $(document).ready(function () {
-    $("form").submit(async function (event) {
+    $('form').submit(async function (event) {
       event.preventDefault();
       firstErrorOccurred = false;
       const url = this.action;
-      const files = $("#fileInput-input")[0].files;
+      const files = $('#fileInput-input')[0].files;
       const formData = new FormData(this);
-      const submitButton = document.getElementById("submitBtn");
-      const showGameBtn = document.getElementById("show-game-btn");
+      const submitButton = document.getElementById('submitBtn');
+      const showGameBtn = document.getElementById('show-game-btn');
       const originalButtonText = submitButton.textContent;
-      var boredWaiting = localStorage.getItem("boredWaiting") || "disabled";
+      var boredWaiting = localStorage.getItem('boredWaiting') || 'disabled';
 
       if (showGameBtn) {
-        showGameBtn.style.display = "none";
+        showGameBtn.style.display = 'none';
       }
 
       // Remove empty file entries
@@ -49,58 +59,60 @@
           formData.delete(key);
         }
       }
-      const override = $("#override").val() || "";
+      const override = $('#override').val() || '';
       console.log(override);
 
       // Set a timeout to show the game button if operation takes more than 5 seconds
       const timeoutId = setTimeout(() => {
-        if (boredWaiting === "enabled" && showGameBtn) {
-          showGameBtn.style.display = "block";
+        if (boredWaiting === 'enabled' && showGameBtn) {
+          showGameBtn.style.display = 'block';
           showGameBtn.parentNode.insertBefore(document.createElement('br'), showGameBtn.nextSibling);
         }
       }, 5000);
 
       try {
-        submitButton.textContent = "Processing...";
+        submitButton.textContent = 'Processing...';
         submitButton.disabled = true;
 
         if (remoteCall === true) {
-          if (override === "multi" || (!multipleInputsForSingleRequest && files.length > 1 && override !== "single")) {
+          if (override === 'multi' || (!multipleInputsForSingleRequest && files.length > 1 && override !== 'single')) {
             await submitMultiPdfForm(url, files);
           } else {
             await handleSingleDownload(url, formData);
           }
         }
 
-
         clearFileInput();
         clearTimeout(timeoutId);
         if (showGameBtn) {
-          showGameBtn.style.display = "none";
-          showGameBtn.style.marginTop = "";
+          showGameBtn.style.display = 'none';
+          showGameBtn.style.marginTop = '';
         }
         submitButton.textContent = originalButtonText;
         submitButton.disabled = false;
 
         // After process finishes, check for boredWaiting and gameDialog open status
         const gameDialog = document.getElementById('game-container-wrapper');
-        if (boredWaiting === "enabled" && gameDialog && gameDialog.open) {
+        if (boredWaiting === 'enabled' && gameDialog && gameDialog.open) {
           // Display a green banner at the bottom of the screen saying "Download complete"
-          let downloadCompleteText = "Download Complete";
-          if(window.downloadCompleteText){
+          let downloadCompleteText = 'Download Complete';
+          if (window.downloadCompleteText) {
             downloadCompleteText = window.downloadCompleteText;
           }
-          $("body").append('<div id="download-complete-banner" style="position:fixed;bottom:0;left:0;width:100%;background-color:green;color:white;text-align:center;padding:10px;font-size:16px;z-index:1000;">'+ downloadCompleteText + '</div>');
-          setTimeout(function() {
-            $("#download-complete-banner").fadeOut("slow", function() {
+          $('body').append(
+            '<div id="download-complete-banner" style="position:fixed;bottom:0;left:0;width:100%;background-color:green;color:white;text-align:center;padding:10px;font-size:16px;z-index:1000;">' +
+              downloadCompleteText +
+              '</div>'
+          );
+          setTimeout(function () {
+            $('#download-complete-banner').fadeOut('slow', function () {
               $(this).remove(); // Remove the banner after fading out
             });
           }, 5000); // Banner will fade out after 5 seconds
         }
-
       } catch (error) {
         clearTimeout(timeoutId);
-        showGameBtn.style.display = "none";
+        showGameBtn.style.display = 'none';
         submitButton.textContent = originalButtonText;
         submitButton.disabled = false;
         handleDownloadError(error);
@@ -112,8 +124,8 @@
   async function getPDFPageCount(file) {
     try {
       const arrayBuffer = await file.arrayBuffer();
-      pdfjsLib.GlobalWorkerOptions.workerSrc = '/pdfjs-legacy/pdf.worker.mjs'
-      const pdf = await pdfjsLib.getDocument({ data: arrayBuffer }).promise;
+      pdfjsLib.GlobalWorkerOptions.workerSrc = '/pdfjs-legacy/pdf.worker.mjs';
+      const pdf = await pdfjsLib.getDocument({data: arrayBuffer}).promise;
       return pdf.numPages;
     } catch (error) {
       console.error('Error getting PDF page count:', error);
@@ -128,8 +140,8 @@
     let errorMessage = null;
 
     try {
-      const response = await fetch(url, { method: "POST", body: formData });
-      const contentType = response.headers.get("content-type");
+      const response = await fetch(url, {method: 'POST', body: formData});
+      const contentType = response.headers.get('content-type');
 
       if (!response.ok) {
         errorMessage = response.status;
@@ -137,58 +149,57 @@
           showSessionExpiredPrompt();
           return;
         }
-        if (contentType && contentType.includes("application/json")) {
-          console.error("Throwing error banner, response was not okay");
+        if (contentType && contentType.includes('application/json')) {
+          console.error('Throwing error banner, response was not okay');
           return handleJsonResponse(response);
         }
         throw new Error(`HTTP error! status: ${response.status}`);
       }
 
-      const contentDisposition = response.headers.get("Content-Disposition");
+      const contentDisposition = response.headers.get('Content-Disposition');
       let filename = getFilenameFromContentDisposition(contentDisposition);
 
       const blob = await response.blob();
       success = true;
 
-      if (contentType.includes("application/pdf") || contentType.includes("image/")) {
+      if (contentType.includes('application/pdf') || contentType.includes('image/')) {
         clearFileInput();
         return handleResponse(blob, filename, !isMulti, isZip);
       } else {
         clearFileInput();
         return handleResponse(blob, filename, false, isZip);
       }
-
     } catch (error) {
       success = false;
       errorMessage = error.message;
-      console.error("Error in handleSingleDownload:", error);
+      console.error('Error in handleSingleDownload:', error);
       throw error;
     } finally {
       const processingTime = performance.now() - startTime;
 
       // Capture analytics
       const pageCount = file && file.type === 'application/pdf' ? await getPDFPageCount(file) : null;
-      if(analyticsEnabled) {
+      if (analyticsEnabled) {
         posthog.capture('file_processing', {
           success: success,
           file_type: file ? file.type || 'unknown' : 'unknown',
           file_size: file ? file.size : 0,
           processing_time: processingTime,
           error_message: errorMessage,
-          pdf_pages: pageCount
+          pdf_pages: pageCount,
         });
       }
     }
   }
 
-   function getFilenameFromContentDisposition(contentDisposition) {
+  function getFilenameFromContentDisposition(contentDisposition) {
     let filename;
 
-    if (contentDisposition && contentDisposition.indexOf("attachment") !== -1) {
-      filename = decodeURIComponent(contentDisposition.split("filename=")[1].replace(/"/g, "")).trim();
+    if (contentDisposition && contentDisposition.indexOf('attachment') !== -1) {
+      filename = decodeURIComponent(contentDisposition.split('filename=')[1].replace(/"/g, '')).trim();
     } else {
       // If the Content-Disposition header is not present or does not contain the filename, use a default filename
-      filename = "download";
+      filename = 'download';
     }
 
     return filename;
@@ -198,37 +209,37 @@
     const json = await response.json();
     const errorMessage = JSON.stringify(json, null, 2);
     if (
-      errorMessage.toLowerCase().includes("the password is incorrect") ||
-      errorMessage.toLowerCase().includes("Password is not provided") ||
-      errorMessage.toLowerCase().includes("PDF contains an encryption dictionary")
+      errorMessage.toLowerCase().includes('the password is incorrect') ||
+      errorMessage.toLowerCase().includes('Password is not provided') ||
+      errorMessage.toLowerCase().includes('PDF contains an encryption dictionary')
     ) {
       if (!firstErrorOccurred) {
         firstErrorOccurred = true;
         alert(pdfPasswordPrompt);
       }
     } else {
-      showErrorBanner(json.error + ":" + json.message, json.trace);
+      showErrorBanner(json.error + ':' + json.message, json.trace);
     }
   }
 
   async function handleResponse(blob, filename, considerViewOptions = false, isZip = false) {
     if (!blob) return;
-    const downloadOption = localStorage.getItem("downloadOption");
+    const downloadOption = localStorage.getItem('downloadOption');
     if (considerViewOptions) {
-      if (downloadOption === "sameWindow") {
+      if (downloadOption === 'sameWindow') {
         const url = URL.createObjectURL(blob);
         window.location.href = url;
         return;
-      } else if (downloadOption === "newWindow") {
+      } else if (downloadOption === 'newWindow') {
         const url = URL.createObjectURL(blob);
-        window.open(url, "_blank");
+        window.open(url, '_blank');
         return;
       }
     }
     if (!isZip) {
       downloadFile(blob, filename);
     }
-    return { filename, blob };
+    return {filename, blob};
   }
 
   function handleDownloadError(error) {
@@ -240,32 +251,32 @@
 
   function downloadFile(blob, filename) {
     if (!(blob instanceof Blob)) {
-      console.error("Invalid blob passed to downloadFile function");
+      console.error('Invalid blob passed to downloadFile function');
       return;
     }
     const url = URL.createObjectURL(blob);
-    const a = document.createElement("a");
+    const a = document.createElement('a');
     a.href = url;
     a.download = filename;
     a.click();
     urls.push(url); // Store the URL so it doesn't get garbage collected too soon
 
-    return { filename, blob };
+    return {filename, blob};
   }
 
   async function submitMultiPdfForm(url, files) {
-    const zipThreshold = parseInt(localStorage.getItem("zipThreshold"), 10) || 4;
+    const zipThreshold = parseInt(localStorage.getItem('zipThreshold'), 10) || 4;
     const zipFiles = files.length > zipThreshold;
     let jszip = null;
     // Add Space below Progress Bar before Showing
     $('.progressBarContainer').after($('<br>'));
-    $(".progressBarContainer").show();
+    $('.progressBarContainer').show();
     // Initialize the progress bar
 
-    let progressBar = $(".progressBar");
-    progressBar.css("width", "0%");
-    progressBar.attr("aria-valuenow", 0);
-    progressBar.attr("aria-valuemax", files.length);
+    let progressBar = $('.progressBar');
+    progressBar.css('width', '0%');
+    progressBar.attr('aria-valuenow', 0);
+    progressBar.attr('aria-valuemax', files.length);
 
     if (zipFiles) {
       jszip = new JSZip();
@@ -279,10 +290,10 @@
     if (postForm) {
       formData = new FormData($(postForm)[0]); // Convert the form to a jQuery object and get the raw DOM element
     } else {
-      console.log("No form with POST method found.");
+      console.log('No form with POST method found.');
     }
     //Remove file to reuse parameters for other runs
-    formData.delete("fileInput");
+    formData.delete('fileInput');
     // Remove empty file entries
     for (let [key, value] of formData.entries()) {
       if (value instanceof File && !value.name) {
@@ -298,12 +309,12 @@
     for (const chunk of chunks) {
       const promises = chunk.map(async (file) => {
         let fileFormData = new FormData();
-        fileFormData.append("fileInput", file);
+        fileFormData.append('fileInput', file);
         console.log(fileFormData);
         // Add other form data
         for (let pair of formData.entries()) {
           fileFormData.append(pair[0], pair[1]);
-          console.log(pair[0] + ", " + pair[1]);
+          console.log(pair[0] + ', ' + pair[1]);
         }
 
         try {
@@ -325,47 +336,47 @@
 
     if (zipFiles) {
       try {
-        const content = await jszip.generateAsync({ type: "blob" });
-        downloadFile(content, "files.zip");
+        const content = await jszip.generateAsync({type: 'blob'});
+        downloadFile(content, 'files.zip');
       } catch (error) {
-        console.error("Error generating ZIP file: " + error);
+        console.error('Error generating ZIP file: ' + error);
       }
     }
-    progressBar.css("width", "100%");
-    progressBar.attr("aria-valuenow", Array.from(files).length);
+    progressBar.css('width', '100%');
+    progressBar.attr('aria-valuenow', Array.from(files).length);
   }
 
   function updateProgressBar(progressBar, files) {
-    let progress = (progressBar.attr("aria-valuenow") / files.length) * 100 + 100 / files.length;
-    progressBar.css("width", progress + "%");
-    progressBar.attr("aria-valuenow", parseInt(progressBar.attr("aria-valuenow")) + 1);
+    let progress = (progressBar.attr('aria-valuenow') / files.length) * 100 + 100 / files.length;
+    progressBar.css('width', progress + '%');
+    progressBar.attr('aria-valuenow', parseInt(progressBar.attr('aria-valuenow')) + 1);
   }
-  window.addEventListener("unload", () => {
+  window.addEventListener('unload', () => {
     for (const url of urls) {
       URL.revokeObjectURL(url);
     }
   });
 
   // Clear file input after job
-  function clearFileInput(){
+  function clearFileInput() {
     let pathname = document.location.pathname;
-    if(pathname != "/merge-pdfs"){
-      let formElement = document.querySelector("#fileInput-input");
+    if (pathname != '/merge-pdfs') {
+      let formElement = document.querySelector('#fileInput-input');
       formElement.value = '';
-      let editSectionElement = document.querySelector("#editSection");
-      if(editSectionElement){
-        editSectionElement.style.display = "none";
+      let editSectionElement = document.querySelector('#editSection');
+      if (editSectionElement) {
+        editSectionElement.style.display = 'none';
       }
-      let cropPdfCanvas = document.querySelector("#cropPdfCanvas");
-      let overlayCanvas = document.querySelector("#overlayCanvas");
-      if(cropPdfCanvas && overlayCanvas){
+      let cropPdfCanvas = document.querySelector('#cropPdfCanvas');
+      let overlayCanvas = document.querySelector('#overlayCanvas');
+      if (cropPdfCanvas && overlayCanvas) {
         cropPdfCanvas.width = 0;
         cropPdfCanvas.height = 0;
 
         overlayCanvas.width = 0;
         overlayCanvas.height = 0;
       }
-    } else{
+    } else {
       console.log("Disabled for 'Merge'");
     }
   }

src/main/resources/static/js/file-icon-factory.js

@@ -0,0 +1,52 @@
+class FileIconFactory {
+  static createFileIcon(fileExtension) {
+    let ext = fileExtension.toLowerCase();
+    switch (ext) {
+      case "pdf":
+        return this.createPDFIcon();
+      case "csv":
+        return this.createCSVIcon();
+      case "jpe":
+      case "jpg":
+      case "jpeg":
+      case "gif":
+      case "png":
+      case "bmp":
+      case "ico":
+      case "svg":
+      case "svgz":
+      case "tif":
+      case "tiff":
+      case "ai":
+      case "drw":
+      case "pct":
+      case "psp":
+      case "xcf":
+      case "psd":
+      case "raw":
+      case "webp":
+      case "heic":
+        return this.createImageIcon();
+      default:
+        return this.createUnknownFileIcon();
+    }
+  }
+
+  static createPDFIcon() {
+    return `
+    <svg xmlns="http://www.w3.org/2000/svg" fill="currentColor" class="bi bi-filetype-pdf" viewBox="0 0 16 16">
+        <path fill-rule="evenodd" d="M14 4.5V14a2 2 0 0 1-2 2h-1v-1h1a1 1 0 0 0 1-1V4.5h-2A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v9H2V2a2 2 0 0 1 2-2h5.5zM1.6 11.85H0v3.999h.791v-1.342h.803q.43 0 .732-.173.305-.175.463-.474a1.4 1.4 0 0 0 .161-.677q0-.375-.158-.677a1.2 1.2 0 0 0-.46-.477q-.3-.18-.732-.179m.545 1.333a.8.8 0 0 1-.085.38.57.57 0 0 1-.238.241.8.8 0 0 1-.375.082H.788V12.48h.66q.327 0 .512.181.185.183.185.522m1.217-1.333v3.999h1.46q.602 0 .998-.237a1.45 1.45 0 0 0 .595-.689q.196-.45.196-1.084 0-.63-.196-1.075a1.43 1.43 0 0 0-.589-.68q-.396-.234-1.005-.234zm.791.645h.563q.371 0 .609.152a.9.9 0 0 1 .354.454q.118.302.118.753a2.3 2.3 0 0 1-.068.592 1.1 1.1 0 0 1-.196.422.8.8 0 0 1-.334.252 1.3 1.3 0 0 1-.483.082h-.563zm3.743 1.763v1.591h-.79V11.85h2.548v.653H7.896v1.117h1.606v.638z"/>
+    </svg>
+      `;
+  }
+
+  static createImageIcon() {
+    return `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 -960 960 960" fill="currentColor"><path d="M216-144q-30 0-51-21.5T144-216v-528q0-29 21-50.5t51-21.5h528q30 0 51 21.5t21 50.5v528q0 29-21 50.5T744-144H216Zm48-144h432L552-480 444-336l-72-96-108 144Z"/></svg>`;
+  }
+
+  static createUnknownFileIcon() {
+    return `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 -960 960 960" fill="currentColor"><path d="M263.72-96Q234-96 213-117.15T192-168v-624q0-29.7 21.15-50.85Q234.3-864 264-864h312l192 192v504q0 29.7-21.16 50.85Q725.68-96 695.96-96H263.72ZM528-624h168L528-792v168Z"/></svg>`;
+  }
+}
+
+export default FileIconFactory;

src/main/resources/static/js/file-utils.js

@@ -0,0 +1,31 @@
+class FileUtils {
+  static extractFileExtension(filename) {
+    if (!filename || filename.trim().length <= 0) return "";
+    let trimmedName = filename.trim();
+    return trimmedName.substring(trimmedName.lastIndexOf(".") + 1);
+  }
+
+  static transformFileSize(size) {
+    if (!size) return `0Bs`;
+    let oneKB = 1024;
+    let oneMB = oneKB * 1024;
+    let oneGB = oneMB * 1024;
+    let oneTB = oneGB * 1024;
+
+    if (size < oneKB) return `${this._toFixed(size)}Bs`;
+    else if (oneKB <= size && size < oneMB) return `${this._toFixed(size / oneKB)}KBs`;
+    else if (oneMB <= size && size < oneGB) return `${this._toFixed(size / oneMB)}MBs`;
+    else if (oneGB <= size && size < oneTB) return `${this._toFixed(size / oneGB)}GBs`;
+    else return `${this._toFixed(size / oneTB)}TBs`;
+  }
+
+  static _toFixed(val, digits = 1) {
+    // Return value without ending 0s after decimal point
+    // Example: if res == 145.0 then return 145, else if 145.x (where x != 0) return 145.x
+    let res = val.toFixed(digits);
+    let resRounded = (res|0);
+    return res == resRounded ? resRounded : res;
+  }
+}
+
+export default FileUtils;

src/main/resources/static/js/fileInput.js

@@ -1,72 +1,92 @@
-document.addEventListener("DOMContentLoaded", function () {
-  document.querySelectorAll(".custom-file-chooser").forEach(setupFileInput);
-});
+import FileIconFactory from "./file-icon-factory.js";
+import FileUtils from "./file-utils.js";
+import UUID from './uuid.js';
+
+let isScriptExecuted = false;
+if (!isScriptExecuted) {
+  isScriptExecuted = true;
+  document.addEventListener("DOMContentLoaded", function () {
+    document.querySelectorAll(".custom-file-chooser").forEach(setupFileInput);
+  });
+}
+
 
 function setupFileInput(chooser) {
   const elementId = chooser.getAttribute("data-bs-element-id");
   const filesSelected = chooser.getAttribute("data-bs-files-selected");
   const pdfPrompt = chooser.getAttribute("data-bs-pdf-prompt");
+  const inputContainerId = chooser.getAttribute('data-bs-element-container-id');
+
+  let inputContainer = document.getElementById(inputContainerId);
 
   let allFiles = [];
   let overlay;
   let dragCounter = 0;
 
+  inputContainer.addEventListener('click', (e) => {
+    let inputBtn = document.getElementById(elementId);
+    inputBtn.click();
+  })
+
   const dragenterListener = function () {
     dragCounter++;
     if (!overlay) {
-      overlay = document.createElement("div");
-      overlay.style.position = "fixed";
-      overlay.style.top = 0;
-      overlay.style.left = 0;
-      overlay.style.width = "100%";
-      overlay.style.height = "100%";
-      overlay.style.background = "rgba(0, 0, 0, 0.5)";
-      overlay.style.color = "#fff";
-      overlay.style.zIndex = "1000";
-      overlay.style.display = "flex";
-      overlay.style.alignItems = "center";
-      overlay.style.justifyContent = "center";
-      overlay.style.pointerEvents = "none";
-      overlay.innerHTML = "<p>Drop files anywhere to upload</p>";
-      document.getElementById("content-wrap").appendChild(overlay);
+      // Show overlay by removing display: none from pseudo elements (::before and ::after)
+      inputContainer.style.setProperty('--overlay-display', "''");
+      overlay = true;
     }
   };
 
   const dragleaveListener = function () {
     dragCounter--;
     if (dragCounter === 0) {
-      if (overlay) {
-        overlay.remove();
-        overlay = null;
-      }
+      hideOverlay();
     }
   };
 
+  function hideOverlay() {
+    if (!overlay) return;
+    inputContainer.style.setProperty('--overlay-display', 'none');
+    overlay = false;
+  }
+
   const dropListener = function (e) {
     e.preventDefault();
+    // Drag and Drop shall only affect the target file chooser
+    if (e.target !== inputContainer) {
+      hideOverlay();
+      dragCounter = 0;
+      return;
+    }
+
     const dt = e.dataTransfer;
     const files = dt.files;
 
-    for (let i = 0; i < files.length; i++) {
-      allFiles.push(files[i]);
+    const fileInput = document.getElementById(elementId);
+    if (fileInput?.hasAttribute("multiple")) {
+      pushFileListTo(files, allFiles);
+    } else if (fileInput) {
+      allFiles = [files[0]];
     }
 
     const dataTransfer = new DataTransfer();
     allFiles.forEach((file) => dataTransfer.items.add(file));
 
-    const fileInput = document.getElementById(elementId);
     fileInput.files = dataTransfer.files;
 
-    if (overlay) {
-      overlay.remove();
-      overlay = null;
-    }
+    hideOverlay();
 
     dragCounter = 0;
 
-    fileInput.dispatchEvent(new Event("change", { bubbles: true }));
+    fileInput.dispatchEvent(new CustomEvent("change", { bubbles: true, detail: {source: 'drag-drop'} }));
   };
 
+  function pushFileListTo(fileList, container) {
+    for (let file of fileList) {
+      container.push(file);
+    }
+  }
+
   ["dragenter", "dragover", "dragleave", "drop"].forEach((eventName) => {
     document.body.addEventListener(eventName, preventDefaults, false);
   });
@@ -81,32 +101,132 @@ function setupFileInput(chooser) {
   document.body.addEventListener("drop", dropListener);
 
   $("#" + elementId).on("change", function (e) {
-    allFiles = Array.from(e.target.files);
+    let element = e.target;
+    const isDragAndDrop = e.detail?.source == 'drag-drop';
+
+    if (element instanceof HTMLInputElement && element.hasAttribute("multiple")) {
+      allFiles = isDragAndDrop ? allFiles : [... allFiles, ... element.files];
+    } else {
+      allFiles = Array.from(isDragAndDrop ? allFiles : [element.files[0]]);
+    }
+
+    allFiles = allFiles.map(file => {
+      if (!file.uniqueId) file.uniqueId = UUID.uuidv4();
+      return file;
+    });
+
+    if (!isDragAndDrop) {
+        let dataTransfer = toDataTransfer(allFiles);
+        element.files = dataTransfer.files;
+    }
+
     handleFileInputChange(this);
-  });
+    this.dispatchEvent(new CustomEvent("file-input-change", { bubbles: true }));
+});
+
+  function toDataTransfer(files) {
+    let dataTransfer = new DataTransfer();
+    files.forEach(file => dataTransfer.items.add(file));
+    return dataTransfer;
+  }
 
   function handleFileInputChange(inputElement) {
     const files = allFiles;
-    const fileNames = files.map((f) => f.name);
-    const selectedFilesContainer = $(inputElement).siblings(".selected-files");
+    showOrHideSelectedFilesContainer(files);
+
+    const filesInfo = files.map((f) => ({name: f.name, size: f.size, uniqueId: f.uniqueId}));
+
+    const selectedFilesContainer = $(inputContainer).siblings(".selected-files");
     selectedFilesContainer.empty();
-    fileNames.forEach((fileName) => {
-      selectedFilesContainer.append("<div>" + fileName + "</div>");
+    filesInfo.forEach((info) => {
+      let fileContainerClasses = 'small-file-container d-flex flex-column justify-content-center align-items-center';
+
+      let fileContainer = document.createElement('div');
+      $(fileContainer).addClass(fileContainerClasses);
+      $(fileContainer).attr('id', info.uniqueId);
+
+      let fileIconContainer = createFileIconContainer(info);
+
+      let fileInfoContainer = createFileInfoContainer(info);
+
+      let removeBtn = document.createElement('div');
+      removeBtn.classList.add('remove-selected-file');
+
+      let removeBtnIconHTML = `<svg xmlns="http://www.w3.org/2000/svg" height="20px" viewBox="0 -960 960 960" width="20px" fill="#C02223"><path d="m339-288 141-141 141 141 51-51-141-141 141-141-51-51-141 141-141-141-51 51 141 141-141 141 51 51ZM480-96q-79 0-149-30t-122.5-82.5Q156-261 126-331T96-480q0-80 30-149.5t82.5-122Q261-804 331-834t149-30q80 0 149.5 30t122 82.5Q804-699 834-629.5T864-480q0 79-30 149t-82.5 122.5Q699-156 629.5-126T480-96Z"/></svg>`;
+      $(removeBtn).append(removeBtnIconHTML);
+      $(removeBtn).attr('data-file-id', info.uniqueId).click(removeFileListener);
+
+      $(fileContainer).append(fileIconContainer);
+      $(fileContainer).append(fileInfoContainer);
+      $(fileContainer).append(removeBtn);
+
+      selectedFilesContainer.append(fileContainer);
     });
-    if (fileNames.length === 1) {
-      $(inputElement).siblings(".custom-file-label").addClass("selected").html(fileNames[0]);
-    } else if (fileNames.length > 1) {
-      $(inputElement)
-        .siblings(".custom-file-label")
-        .addClass("selected")
-        .html(fileNames.length + " " + filesSelected);
-    } else {
-      $(inputElement).siblings(".custom-file-label").addClass("selected").html(pdfPrompt);
-    }
+
+    showOrHideSelectedFilesContainer(filesInfo);
   }
+
+  function showOrHideSelectedFilesContainer(files) {
+    if (files && files.length > 0)
+      chooser.style.setProperty('--selected-files-display', 'flex');
+    else
+    chooser.style.setProperty('--selected-files-display', 'none');
+  }
+
+  function removeFileListener(e) {
+    const fileId = (e.target).getAttribute('data-file-id');
+
+    let inputElement = document.getElementById(elementId);
+    removeFileById(fileId, inputElement);
+
+    showOrHideSelectedFilesContainer(allFiles);
+
+    inputElement.dispatchEvent(new CustomEvent("file-input-change", { bubbles: true }));
+  }
+
+  function removeFileById(fileId, inputElement) {
+    let fileContainer = document.getElementById(fileId);
+    fileContainer.remove();
+
+    allFiles = allFiles.filter(v => v.uniqueId != fileId);
+    let dataTransfer = toDataTransfer(allFiles);
+
+    if (inputElement) inputElement.files = dataTransfer.files;
+  }
+
+  function createFileIconContainer(info) {
+    let fileIconContainer = document.createElement('div');
+    fileIconContainer.classList.add('file-icon');
+
+    // Add icon based on the extension
+    let fileExtension = FileUtils.extractFileExtension(info.name);
+    let fileIcon = FileIconFactory.createFileIcon(fileExtension);
+
+    $(fileIconContainer).append(fileIcon);
+    return fileIconContainer;
+  }
+
+  function createFileInfoContainer(info) {
+    let fileInfoContainer = document.createElement("div");
+    let fileInfoContainerClasses = 'file-info d-flex flex-column align-items-center justify-content-center';
+
+    $(fileInfoContainer).addClass(fileInfoContainerClasses);
+
+    $(fileInfoContainer).append(
+      `<div title="${info.name}">${info.name}</div>`
+    );
+    let fileSizeWithUnits = FileUtils.transformFileSize(info.size);
+    $(fileInfoContainer).append(
+      `<div title="${info.size}">${fileSizeWithUnits}</div>`
+    );
+    return fileInfoContainer;
+  }
+
   //Listen for event of file being removed and the filter it out of the allFiles array
   document.addEventListener("fileRemoved", function (e) {
-    const fileName = e.detail;
-    allFiles = allFiles.filter(file => file.name !== fileName);
+    const fileId = e.detail;
+    let inputElement = document.getElementById(elementId);
+    removeFileById(fileId, inputElement);
+    showOrHideSelectedFilesContainer(allFiles);
   });
 }

src/main/resources/static/js/merge.js

@@ -3,7 +3,7 @@ let currentSort = {
   descending: false,
 };
 
-document.getElementById("fileInput-input").addEventListener("change", function () {
+document.getElementById("fileInput-input").addEventListener("file-input-change", function () {
   var files = this.files;
   displayFiles(files);
 });
@@ -29,6 +29,7 @@ async function displayFiles(files) {
     // Create filename div and set textContent to sanitize
     const fileNameDiv = document.createElement("div");
     fileNameDiv.className = "filename";
+    fileNameDiv.setAttribute("data-file-id", files[i].uniqueId);
     fileNameDiv.textContent = files[i].name;
 
     // Create page info div and set textContent to sanitize
@@ -110,11 +111,13 @@ function attachMoveButtons() {
       event.preventDefault();
       var parent = this.closest(".list-group-item");
       //Get name of removed file
-      var fileName = parent.querySelector(".filename").innerText;
+      let filenameNode = parent.querySelector(".filename");
+      var fileName = filenameNode.innerText;
+      const fileId = filenameNode.getAttribute("data-file-id");
       parent.remove();
       updateFiles();
       //Dispatch a custom event with the name of the removed file
-      var event = new CustomEvent("fileRemoved", { detail: fileName });
+      var event = new CustomEvent("fileRemoved", { detail: fileId });
       document.dispatchEvent(event);
     });
   }

src/main/resources/static/js/multitool/PdfActionsManager.js

@@ -1,12 +1,20 @@
+import { DeletePageCommand } from "./commands/delete-page.js";
+import { SelectPageCommand } from "./commands/select.js";
+import { SplitFileCommand } from "./commands/split.js";
+import { UndoManager } from "./UndoManager.js";
+
 class PdfActionsManager {
   pageDirection;
   pagesContainer;
   static selectedPages = []; // Static property shared across all instances
+  undoManager;
 
-  constructor(id) {
+  constructor(id, undoManager) {
     this.pagesContainer = document.getElementById(id);
     this.pageDirection = document.documentElement.getAttribute("dir");
 
+    this.undoManager = undoManager || new UndoManager();
+
     var styleElement = document.createElement("link");
     styleElement.rel = "stylesheet";
     styleElement.href = "css/pdfActions.css";
@@ -27,7 +35,8 @@ class PdfActionsManager {
 
     const sibling = imgContainer.previousSibling;
     if (sibling) {
-      this.movePageTo(imgContainer, sibling, true);
+      let movePageCommand = this.movePageTo(imgContainer, sibling, true, true);
+      this._pushUndoClearRedo(movePageCommand);
     }
   }
 
@@ -35,7 +44,12 @@ class PdfActionsManager {
     var imgContainer = this.getPageContainer(e.target);
     const sibling = imgContainer.nextSibling;
     if (sibling) {
-      this.movePageTo(imgContainer, sibling.nextSibling, true);
+      let movePageCommand = this.movePageTo(
+        imgContainer,
+        sibling.nextSibling,
+        true
+      );
+      this._pushUndoClearRedo(movePageCommand);
     }
   }
 
@@ -43,30 +57,27 @@ class PdfActionsManager {
     var imgContainer = this.getPageContainer(e.target);
     const img = imgContainer.querySelector("img");
 
-    this.rotateElement(img, -90);
+    let rotateCommand = this.rotateElement(img, -90);
+    this._pushUndoClearRedo(rotateCommand);
   }
 
   rotateCWButtonCallback(e) {
     var imgContainer = this.getPageContainer(e.target);
     const img = imgContainer.querySelector("img");
 
-    this.rotateElement(img, 90);
+    let rotateCommand = this.rotateElement(img, 90);
+    this._pushUndoClearRedo(rotateCommand);
   }
 
   deletePageButtonCallback(e) {
-    var imgContainer = this.getPageContainer(e.target);
-    this.pagesContainer.removeChild(imgContainer);
-    if (this.pagesContainer.childElementCount === 0) {
-      const filenameInput = document.getElementById("filename-input");
-      const filenameParagraph = document.getElementById("filename");
-      const downloadBtn = document.getElementById("export-button");
+    let imgContainer = this.getPageContainer(e.target);
+    let deletePageCommand = new DeletePageCommand(
+      imgContainer,
+      this.pagesContainer
+    );
+    deletePageCommand.execute();
 
-      filenameInput.disabled = true;
-      filenameInput.value = "";
-      filenameParagraph.innerText = "";
-
-      downloadBtn.disabled = true;
-    }
+    this._pushUndoClearRedo(deletePageCommand);
   }
 
   insertFileButtonCallback(e) {
@@ -81,7 +92,15 @@ class PdfActionsManager {
 
   splitFileButtonCallback(e) {
     var imgContainer = this.getPageContainer(e.target);
-    imgContainer.classList.toggle("split-before");
+
+    let splitFileCommand = new SplitFileCommand(imgContainer, "split-before");
+    splitFileCommand.execute();
+
+    this._pushUndoClearRedo(splitFileCommand);
+  }
+
+  _pushUndoClearRedo(command) {
+    this.undoManager.pushUndoClearRedo(command);
   }
 
   setActions({ movePageTo, addFiles, rotateElement }) {
@@ -159,25 +178,10 @@ class PdfActionsManager {
 
     selectCheckbox.onchange = () => {
       const pageNumber = Array.from(div.parentNode.children).indexOf(div) + 1;
-      if (selectCheckbox.checked) {
-        //adds to array of selected pages
-        window.selectedPages.push(pageNumber);
-      } else {
-        //remove page from selected pages array
-        const index = window.selectedPages.indexOf(pageNumber);
-        if (index !== -1) {
-          window.selectedPages.splice(index, 1);
-        }
-      }
+      let selectPageCommand = new SelectPageCommand(pageNumber, selectCheckbox);
+      selectPageCommand.execute();
 
-      if (window.selectedPages.length > 0 && !window.selectPage) {
-        window.toggleSelectPageVisibility();
-      }
-      if (window.selectedPages.length == 0 && window.selectPage) {
-        window.toggleSelectPageVisibility();
-      }
-
-      window.updateSelectedPagesDisplay();
+      this._pushUndoClearRedo(selectPageCommand);
     };
 
     const insertFileButtonContainer = document.createElement("div");

src/main/resources/static/js/multitool/PdfContainer.js

@@ -1,11 +1,20 @@
+import {MovePageUpCommand, MovePageDownCommand} from './commands/move-page.js';
+import {RemoveSelectedCommand} from './commands/remove.js';
+import {RotateAllCommand, RotateElementCommand} from './commands/rotate.js';
+import {SplitAllCommand} from './commands/split.js';
+import {UndoManager} from './UndoManager.js';
+import {PageBreakCommand} from './commands/page-break.js';
+import {AddFilesCommand} from './commands/add-page.js';
+
 class PdfContainer {
   fileName;
   pagesContainer;
   pagesContainerWrapper;
   pdfAdapters;
   downloadLink;
+  undoManager;
 
-  constructor(id, wrapperId, pdfAdapters) {
+  constructor(id, wrapperId, pdfAdapters, undoManager) {
     this.pagesContainer = document.getElementById(id);
     this.pagesContainerWrapper = document.getElementById(wrapperId);
     this.downloadLink = null;
@@ -27,10 +36,12 @@ class PdfContainer {
     this.updateSelectedPagesDisplay = this.updateSelectedPagesDisplay.bind(this);
     this.toggleSelectPageVisibility = this.toggleSelectPageVisibility.bind(this);
     this.updatePagesFromCSV = this.updatePagesFromCSV.bind(this);
-    this.addFilesBlankAll = this.addFilesBlankAll.bind(this)
+    this.addFilesBlankAll = this.addFilesBlankAll.bind(this);
     this.removeAllElements = this.removeAllElements.bind(this);
     this.resetPages = this.resetPages.bind(this);
 
+    this.undoManager = undoManager || new UndoManager();
+
     this.pdfAdapters = pdfAdapters;
 
     this.pdfAdapters.forEach((adapter) => {
@@ -54,200 +65,208 @@ class PdfContainer {
     window.updatePagesFromCSV = this.updatePagesFromCSV;
     window.updateSelectedPagesDisplay = this.updateSelectedPagesDisplay;
     window.updatePageNumbersAndCheckboxes = this.updatePageNumbersAndCheckboxes;
-    window.addFilesBlankAll = this.addFilesBlankAll
+    window.addFilesBlankAll = this.addFilesBlankAll;
     window.removeAllElements = this.removeAllElements;
     window.resetPages = this.resetPages;
 
-    const filenameInput = document.getElementById("filename-input");
-    const downloadBtn = document.getElementById("export-button");
+    let undoBtn = document.getElementById('undo-btn');
+    let redoBtn = document.getElementById('redo-btn');
+
+    document.addEventListener('undo-manager-update', (e) => {
+      let canUndo = e.detail.canUndo;
+      let canRedo = e.detail.canRedo;
+
+      undoBtn.disabled = !canUndo;
+      redoBtn.disabled = !canRedo;
+    });
+
+    window.undo = () => {
+      if (undoManager.canUndo()) undoManager.undo();
+      else {
+        undoBtn.disabled = !undoManager.canUndo();
+        redoBtn.disabled = !undoManager.canRedo();
+      }
+    };
+
+    window.redo = () => {
+      if (undoManager.canRedo()) undoManager.redo();
+      else {
+        undoBtn.disabled = !undoManager.canUndo();
+        redoBtn.disabled = !undoManager.canRedo();
+      }
+    };
+
+    const filenameInput = document.getElementById('filename-input');
+    const downloadBtn = document.getElementById('export-button');
 
     filenameInput.onkeyup = this.updateFilename;
     filenameInput.onkeydown = this.preventIllegalChars;
     filenameInput.disabled = false;
-    filenameInput.innerText = "";
+    filenameInput.innerText = '';
     downloadBtn.disabled = true;
   }
 
-  movePageTo(startElement, endElement, scrollTo = false) {
-    const childArray = Array.from(this.pagesContainer.childNodes);
-    const startIndex = childArray.indexOf(startElement);
-    const endIndex = childArray.indexOf(endElement);
-
-    // Check & remove page number elements here too if they exist because Firefox doesn't fire the relevant event on page move.
-    const pageNumberElement = startElement.querySelector(".page-number");
-    if (pageNumberElement) {
-      startElement.removeChild(pageNumberElement);
-    }
-
-    this.pagesContainer.removeChild(startElement);
-    if (!endElement) {
-      this.pagesContainer.append(startElement);
+  movePageTo(startElement, endElement, scrollTo = false, moveUp = false) {
+    let movePageCommand;
+    if (moveUp) {
+      movePageCommand = new MovePageUpCommand(
+        startElement,
+        endElement,
+        this.pagesContainer,
+        this.pagesContainerWrapper,
+        scrollTo
+      );
     } else {
-      this.pagesContainer.insertBefore(startElement, endElement);
+      movePageCommand = new MovePageDownCommand(
+        startElement,
+        endElement,
+        this.pagesContainer,
+        this.pagesContainerWrapper,
+        scrollTo
+      );
     }
 
-    if (scrollTo) {
-      const { width } = startElement.getBoundingClientRect();
-      const vector = endIndex !== -1 && startIndex > endIndex ? 0 - width : width;
-
-      this.pagesContainerWrapper.scroll({
-        left: this.pagesContainerWrapper.scrollLeft + vector,
-      });
-    }
+    movePageCommand.execute();
+    return movePageCommand;
   }
 
-  addFiles(nextSiblingElement, blank = false) {
-    if (blank) {
+  async addFiles(element) {
+    let addFilesCommand = new AddFilesCommand(
+      element,
+      window.selectedPages,
+      this.addFilesAction.bind(this),
+      this.pagesContainer
+    );
 
-      this.addFilesBlank(nextSiblingElement);
+    await addFilesCommand.execute();
 
-    } else {
-      var input = document.createElement("input");
-      input.type = "file";
+    this.undoManager.pushUndoClearRedo(addFilesCommand);
+  }
+
+  async addFilesAction(nextSiblingElement) {
+    let pages = [];
+    return new Promise((resolve) => {
+      var input = document.createElement('input');
+      input.type = 'file';
       input.multiple = true;
-      input.setAttribute("accept", "application/pdf,image/*");
+      input.setAttribute('accept', 'application/pdf,image/*');
+
       input.onchange = async (e) => {
         const files = e.target.files;
-
-        this.addFilesFromFiles(files, nextSiblingElement);
-        this.updateFilename(files ? files[0].name : "");
-        const selectAll = document.getElementById("select-pages-container");
-        selectAll.classList.toggle("hidden", false);
+        if (files.length > 0) {
+          pages = await this.addFilesFromFiles(files, nextSiblingElement, pages);
+          this.updateFilename(files[0].name);
+          const selectAll = document.getElementById('select-pages-container');
+          selectAll.classList.toggle('hidden', false);
+        }
+        resolve(pages);
       };
 
       input.click();
-    }
-  }
-
-  async addFilesFromFiles(files, nextSiblingElement) {
-    this.fileName = files[0].name;
-    for (var i = 0; i < files.length; i++) {
-      const startTime = Date.now();
-      let processingTime, errorMessage = null, pageCount = 0;
-      try {
-      const file = files[i];
-      if (file.type === "application/pdf") {
-        const { renderer, pdfDocument } = await this.loadFile(file);
-        pageCount = renderer.pageCount || 0;
-        await this.addPdfFile(renderer, pdfDocument, nextSiblingElement);
-      } else if (file.type.startsWith("image/")) {
-        await this.addImageFile(file, nextSiblingElement);
-      }
-      processingTime = Date.now() - startTime;
-      this.captureFileProcessingEvent(true, file, processingTime, null, pageCount);
-    } catch (error) {
-      processingTime = Date.now() - startTime;
-      errorMessage = error.message || "Unknown error";
-      this.captureFileProcessingEvent(false, files[i], processingTime, errorMessage, pageCount);
-    }
-    }
-
-    document.querySelectorAll(".enable-on-file").forEach((element) => {
-      element.disabled = false;
     });
   }
 
- captureFileProcessingEvent(success, file, processingTime, errorMessage, pageCount) {
-  try{
-  if(analyticsEnabled){
-  posthog.capture('file_processing', {
-    success,
-    file_type: file?.type || 'unknown',
-    file_size: file?.size || 0,
-    processing_time: processingTime,
-    error_message: errorMessage,
-    pdf_pages: pageCount,
-  });
-}
-}catch{
-}
-}
+  async addFilesFromFiles(files, nextSiblingElement, pages) {
+    this.fileName = files[0].name;
+    for (var i = 0; i < files.length; i++) {
+      const startTime = Date.now();
+      let processingTime,
+        errorMessage = null,
+        pageCount = 0;
+      try {
+        const file = files[i];
+        if (file.type === 'application/pdf') {
+          const {renderer, pdfDocument} = await this.loadFile(file);
+          pageCount = renderer.pageCount || 0;
+          pages = await this.addPdfFile(renderer, pdfDocument, nextSiblingElement, pages);
+        } else if (file.type.startsWith('image/')) {
+          pages = await this.addImageFile(file, nextSiblingElement, pages);
+        }
+        processingTime = Date.now() - startTime;
+        this.captureFileProcessingEvent(true, file, processingTime, null, pageCount);
+      } catch (error) {
+        processingTime = Date.now() - startTime;
+        errorMessage = error.message || 'Unknown error';
+        this.captureFileProcessingEvent(false, files[i], processingTime, errorMessage, pageCount);
+      }
+    }
 
-
-  async addFilesBlank(nextSiblingElement) {
-    const pdfContent = `
-      %PDF-1.4
-      1 0 obj
-      << /Type /Catalog /Pages 2 0 R >>
-      endobj
-      2 0 obj
-      << /Type /Pages /Kids [3 0 R] /Count 1 >>
-      endobj
-      3 0 obj
-      << /Type /Page /Parent 2 0 R /MediaBox [0 0 595 842] /Contents 5 0 R >>
-      endobj
-      5 0 obj
-      << /Length 44 >>
-      stream
-      0 0 0 595 0 842 re
-      W
-      n
-      endstream
-      endobj
-      xref
-      0 6
-      0000000000 65535 f
-      0000000010 00000 n
-      0000000071 00000 n
-      0000000121 00000 n
-      0000000205 00000 n
-      0000000400 00000 n
-      trailer
-      << /Size 6 /Root 1 0 R >>
-      startxref
-      278
-      %%EOF
-    `;
-    const blob = new Blob([pdfContent], { type: 'application/pdf' });
-    const url = URL.createObjectURL(blob);
-    const file = new File([blob], "blank_page.pdf", { type: "application/pdf" });
-    await this.addPdfFile(file, nextSiblingElement);
+    document.querySelectorAll('.enable-on-file').forEach((element) => {
+      element.disabled = false;
+    });
+    return pages;
   }
 
+  captureFileProcessingEvent(success, file, processingTime, errorMessage, pageCount) {
+    try {
+      if (analyticsEnabled) {
+        posthog.capture('file_processing', {
+          success,
+          file_type: file?.type || 'unknown',
+          file_size: file?.size || 0,
+          processing_time: processingTime,
+          error_message: errorMessage,
+          pdf_pages: pageCount,
+        });
+      }
+    } catch {}
+  }
+
+  async addFilesBlank(nextSiblingElement, pages) {
+    let doc = await PDFLib.PDFDocument.create();
+    let docBytes = await doc.save();
+
+    const url = URL.createObjectURL(new Blob([docBytes], {type: 'application/pdf'}));
+
+    const renderer = await this.toRenderer(url);
+    pages = await this.addPdfFile(renderer, doc, nextSiblingElement, pages);
+    return pages;
+  }
 
   rotateElement(element, deg) {
-    var lastTransform = element.style.rotate;
-    if (!lastTransform) {
-      lastTransform = "0";
-    }
-    const lastAngle = parseInt(lastTransform.replace(/[^\d-]/g, ""));
-    const newAngle = lastAngle + deg;
-
-    element.style.rotate = newAngle + "deg";
+    let rotateCommand = new RotateElementCommand(element, deg);
+    rotateCommand.execute();
 
+    return rotateCommand;
   }
 
-  async addPdfFile(renderer, pdfDocument, nextSiblingElement) {
+  async addPdfFile(renderer, pdfDocument, nextSiblingElement, pages) {
     for (var i = 0; i < renderer.pageCount; i++) {
-      const div = document.createElement("div");
+      const div = document.createElement('div');
 
-      div.classList.add("page-container");
-      div.id = "page-container-" + (i + 1);
-      var img = document.createElement("img");
-      img.classList.add("page-image");
+      div.classList.add('page-container');
+      div.id = 'page-container-' + (i + 1);
+      var img = document.createElement('img');
+      img.classList.add('page-image');
       const imageSrc = await renderer.renderPage(i);
       img.src = imageSrc;
       img.pageIdx = i;
       img.rend = renderer;
       img.doc = pdfDocument;
       div.appendChild(img);
+
       this.pdfAdapters.forEach((adapter) => {
         adapter.adapt?.(div);
       });
+
       if (nextSiblingElement) {
         this.pagesContainer.insertBefore(div, nextSiblingElement);
       } else {
         this.pagesContainer.appendChild(div);
       }
+
+      pages.push(div);
     }
+
+    return pages;
   }
 
-  async addImageFile(file, nextSiblingElement) {
-    const div = document.createElement("div");
-    div.classList.add("page-container");
+  async addImageFile(file, nextSiblingElement, pages) {
+    const div = document.createElement('div');
+    div.classList.add('page-container');
 
-    var img = document.createElement("img");
-    img.classList.add("page-image");
+    var img = document.createElement('img');
+    img.classList.add('page-image');
     img.src = URL.createObjectURL(file);
     div.appendChild(img);
 
@@ -259,17 +278,19 @@ class PdfContainer {
     } else {
       this.pagesContainer.appendChild(div);
     }
+    pages.push(div);
+    return pages;
   }
 
   async loadFile(file) {
     var objectUrl = URL.createObjectURL(file);
     var pdfDocument = await this.toPdfLib(objectUrl);
     var renderer = await this.toRenderer(objectUrl);
-    return { renderer, pdfDocument };
+    return {renderer, pdfDocument};
   }
 
   async toRenderer(objectUrl) {
-    pdfjsLib.GlobalWorkerOptions.workerSrc = "./pdfjs-legacy/pdf.worker.mjs";
+    pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs-legacy/pdf.worker.mjs';
     const pdf = await pdfjsLib.getDocument(objectUrl).promise;
     return {
       document: pdf,
@@ -277,7 +298,7 @@ class PdfContainer {
       renderPage: async function (pageIdx) {
         const page = await this.document.getPage(pageIdx + 1);
 
-        const canvas = document.createElement("canvas");
+        const canvas = document.createElement('canvas');
 
         // set the canvas size to the size of the page
         if (page.rotate == 90 || page.rotate == 270) {
@@ -290,8 +311,8 @@ class PdfContainer {
 
         // render the page onto the canvas
         var renderContext = {
-          canvasContext: canvas.getContext("2d"),
-          viewport: page.getViewport({ scale: 1 }),
+          canvasContext: canvas.getContext('2d'),
+          viewport: page.getViewport({scale: 1}),
         };
 
         await page.render(renderContext).promise;
@@ -309,6 +330,7 @@ class PdfContainer {
   }
 
   rotateAll(deg) {
+    let elementsToRotate = [];
     for (let i = 0; i < this.pagesContainer.childNodes.length; i++) {
       const child = this.pagesContainer.children[i];
       if (!child) continue;
@@ -317,70 +339,53 @@ class PdfContainer {
       //if in page select mode is active rotate only selected pages
       if (window.selectPage && !window.selectedPages.includes(pageIndex)) continue;
 
-      const img = child.querySelector("img");
+      const img = child.querySelector('img');
       if (!img) continue;
 
-      this.rotateElement(img, deg);
+      elementsToRotate.push(img);
     }
+
+    let rotateAllCommand = new RotateAllCommand(elementsToRotate, deg);
+    rotateAllCommand.execute();
+
+    this.undoManager.pushUndoClearRedo(rotateAllCommand);
   }
 
-  removeAllElements(){
-    let pageContainerNodeList = document.querySelectorAll(".page-container");
+  removeAllElements() {
+    let pageContainerNodeList = document.querySelectorAll('.page-container');
     for (var i = 0; i < pageContainerNodeList.length; i++) {
       pageContainerNodeList[i].remove();
     }
-    document.querySelectorAll(".enable-on-file").forEach((element) => {
+    document.querySelectorAll('.enable-on-file').forEach((element) => {
       element.disabled = true;
     });
   }
 
   deleteSelected() {
     window.selectedPages.sort((a, b) => a - b);
-    let deletions = 0;
-
-    window.selectedPages.forEach((pageIndex) => {
-      const adjustedIndex = pageIndex - 1 - deletions;
-      const child = this.pagesContainer.children[adjustedIndex];
-      if (child) {
-        this.pagesContainer.removeChild(child);
-        deletions++;
-      }
-    });
-
-    if (this.pagesContainer.childElementCount === 0) {
-      const filenameInput = document.getElementById("filename-input");
-      const filenameParagraph = document.getElementById("filename");
-      const downloadBtn = document.getElementById("export-button");
-
-      if (filenameInput)
-        filenameInput.disabled = true;
-      filenameInput.value = "";
-      if (filenameParagraph)
-        filenameParagraph.innerText = "";
-
-      downloadBtn.disabled = true;
-    }
-
-    window.selectedPages = [];
-    this.updatePageNumbersAndCheckboxes();
-    document.dispatchEvent(new Event("selectedPagesUpdated"));
+    let removeSelectedCommand = new RemoveSelectedCommand(
+      this.pagesContainer,
+      window.selectedPages,
+      this.updatePageNumbersAndCheckboxes
+    );
+    removeSelectedCommand.execute();
+    this.undoManager.pushUndoClearRedo(removeSelectedCommand);
   }
 
   toggleSelectAll() {
-    const checkboxes = document.querySelectorAll(".pdf-actions_checkbox");
+    const checkboxes = document.querySelectorAll('.pdf-actions_checkbox');
     window.selectAll = !window.selectAll;
-    const selectIcon = document.getElementById("select-All-Container");
-    const deselectIcon = document.getElementById("deselect-All-Container");
+    const selectIcon = document.getElementById('select-All-Container');
+    const deselectIcon = document.getElementById('deselect-All-Container');
 
-    if (selectIcon.style.display === "none") {
-      selectIcon.style.display = "inline";
-      deselectIcon.style.display = "none";
+    if (selectIcon.style.display === 'none') {
+      selectIcon.style.display = 'inline';
+      deselectIcon.style.display = 'none';
     } else {
-      selectIcon.style.display = "none";
-      deselectIcon.style.display = "inline";
+      selectIcon.style.display = 'none';
+      deselectIcon.style.display = 'inline';
     }
     checkboxes.forEach((checkbox) => {
-
       checkbox.checked = window.selectAll;
 
       const pageNumber = Array.from(checkbox.parentNode.parentNode.children).indexOf(checkbox.parentNode) + 1;
@@ -403,18 +408,20 @@ class PdfContainer {
   parseCSVInput(csvInput, maxPageIndex) {
     const pages = new Set();
 
-    csvInput.split(",").forEach((item) => {
-      const range = item.split("-").map((p) => parseInt(p.trim()));
+    csvInput.split(',').forEach((item) => {
+      const range = item.split('-').map((p) => parseInt(p.trim()));
       if (range.length === 2) {
         const [start, end] = range;
         for (let i = start; i <= end && i <= maxPageIndex; i++) {
-          if (i > 0) { // Ensure the page number is greater than 0
+          if (i > 0) {
+            // Ensure the page number is greater than 0
             pages.add(i);
           }
         }
       } else if (range.length === 1 && Number.isInteger(range[0])) {
         const page = range[0];
-        if (page > 0 && page <= maxPageIndex) { // Ensure page is within valid range
+        if (page > 0 && page <= maxPageIndex) {
+          // Ensure page is within valid range
           pages.add(page);
         }
       }
@@ -424,24 +431,24 @@ class PdfContainer {
   }
 
   updatePagesFromCSV() {
-    const csvInput = document.getElementById("csv-input").value;
+    const csvInput = document.getElementById('csv-input').value;
 
-    const allPages = this.pagesContainer.querySelectorAll(".page-container");
+    const allPages = this.pagesContainer.querySelectorAll('.page-container');
     const maxPageIndex = allPages.length;
 
     window.selectedPages = this.parseCSVInput(csvInput, maxPageIndex);
 
     this.updateSelectedPagesDisplay();
 
-    const allCheckboxes = document.querySelectorAll(".pdf-actions_checkbox");
+    const allCheckboxes = document.querySelectorAll('.pdf-actions_checkbox');
     allCheckboxes.forEach((checkbox) => {
-      const page = parseInt(checkbox.getAttribute("data-page-number"));
+      const page = parseInt(checkbox.getAttribute('data-page-number'));
       checkbox.checked = window.selectedPages.includes(page);
     });
   }
 
   formatSelectedPages(pages) {
-    if (pages.length === 0) return "";
+    if (pages.length === 0) return '';
 
     pages.sort((a, b) => a - b); // Sort the page numbers in ascending order
     const ranges = [];
@@ -462,27 +469,27 @@ class PdfContainer {
     // Add the last range
     ranges.push(start === end ? `${start}` : `${start}-${end}`);
 
-    return ranges.join(", ");
+    return ranges.join(', ');
   }
 
   updateSelectedPagesDisplay() {
-    const selectedPagesList = document.getElementById("selected-pages-list");
-    const selectedPagesInput = document.getElementById("csv-input");
-    selectedPagesList.innerHTML = ""; // Clear the list
+    const selectedPagesList = document.getElementById('selected-pages-list');
+    const selectedPagesInput = document.getElementById('csv-input');
+    selectedPagesList.innerHTML = ''; // Clear the list
     window.selectedPages.sort((a, b) => a - b);
     window.selectedPages.forEach((page) => {
-      const pageItem = document.createElement("div");
-      pageItem.className = "page-item";
+      const pageItem = document.createElement('div');
+      pageItem.className = 'page-item';
 
-      const pageNumber = document.createElement("span");
+      const pageNumber = document.createElement('span');
       const pagelabel = /*[[#{multiTool.page}]]*/ 'Page';
-      pageNumber.className = "selected-page-number";
+      pageNumber.className = 'selected-page-number';
       pageNumber.innerText = `${pagelabel} ${page}`;
       pageItem.appendChild(pageNumber);
 
-      const removeBtn = document.createElement("span");
-      removeBtn.className = "remove-btn";
-      removeBtn.innerHTML = "✕";
+      const removeBtn = document.createElement('span');
+      removeBtn.className = 'remove-btn';
+      removeBtn.innerHTML = '✕';
 
       // Remove page from selected pages list and update display and checkbox
       removeBtn.onclick = () => {
@@ -506,7 +513,7 @@ class PdfContainer {
   parsePageRanges(ranges) {
     const pages = new Set();
 
-    ranges.split(',').forEach(range => {
+    ranges.split(',').forEach((range) => {
       const [start, end] = range.split('-').map(Number);
       if (end) {
         for (let i = start; i <= end; i++) {
@@ -520,50 +527,35 @@ class PdfContainer {
     return Array.from(pages).sort((a, b) => a - b);
   }
 
-  addFilesBlankAll() {
-    const allPages = this.pagesContainer.querySelectorAll(".page-container");
-    allPages.forEach((page, index) => {
-      if (index !== 0) {
-        this.addFiles(page, true)
-      }
-    });
+  async addFilesBlankAll() {
+    const allPages = this.pagesContainer.querySelectorAll('.page-container');
+
+    let pageBreakCommand = new PageBreakCommand(
+      allPages,
+      window.selectPage,
+      window.selectedPages,
+      this.addFilesBlank.bind(this),
+      this.pagesContainer
+    );
+
+    await pageBreakCommand.execute();
+
+    this.undoManager.pushUndoClearRedo(pageBreakCommand);
   }
 
   splitAll() {
-    const allPages = this.pagesContainer.querySelectorAll(".page-container");
+    const allPages = this.pagesContainer.querySelectorAll('.page-container');
+    let splitAllCommand = new SplitAllCommand(allPages, window.selectPage, window.selectedPages, 'split-before');
+    splitAllCommand.execute();
 
-    if (!window.selectPage) {
-      const hasSplit = this.pagesContainer.querySelectorAll(".split-before").length > 0;
-      if (hasSplit) {
-        allPages.forEach(page => {
-          page.classList.remove("split-before");
-        });
-      } else {
-        allPages.forEach(page => {
-          page.classList.add("split-before");
-        });
-      }
-      return;
-    }
-
-    allPages.forEach((page, index) => {
-      const pageIndex = index;
-      if (window.selectPage && !window.selectedPages.includes(pageIndex)) return;
-
-      if (page.classList.contains("split-before")) {
-        page.classList.remove("split-before");
-      } else {
-        page.classList.add("split-before");
-      }
-    });
+    this.undoManager.pushUndoClearRedo(splitAllCommand);
   }
 
-
   async splitPDF(baseDocBytes, splitters) {
     const baseDocument = await PDFLib.PDFDocument.load(baseDocBytes);
     const pageNum = baseDocument.getPages().length;
 
-    splitters.sort((a, b) => a - b);; // We'll sort the separator indexes just in case querySelectorAll does something funny.
+    splitters.sort((a, b) => a - b); // We'll sort the separator indexes just in case querySelectorAll does something funny.
     splitters.push(pageNum); // We'll also add a faux separator at the end in order to get the pages after the last separator.
 
     const splitDocuments = [];
@@ -574,18 +566,18 @@ class PdfContainer {
 
       let firstPage = splitterIndex === 0 ? 0 : splitters[splitterIndex - 1];
 
-      const pageIndices = Array.from({ length: splitterPosition - firstPage }, (value, key) => firstPage + key);
+      const pageIndices = Array.from({length: splitterPosition - firstPage}, (value, key) => firstPage + key);
 
       const copiedPages = await subDocument.copyPages(baseDocument, pageIndices);
 
-      copiedPages.forEach(copiedPage => {
+      copiedPages.forEach((copiedPage) => {
         subDocument.addPage(copiedPage);
       });
 
       const subDocumentBytes = await subDocument.save();
 
       splitDocuments.push(subDocumentBytes);
-    };
+    }
 
     return splitDocuments;
   }
@@ -594,8 +586,10 @@ class PdfContainer {
     const zip = new JSZip();
 
     for (let i = 0; i < pdfBytesArray.length; i++) {
-      const documentBlob = new Blob([pdfBytesArray[i]], { type: "application/pdf" });
-      zip.file(baseNameString + "-" + (i + 1) + ".pdf", documentBlob);
+      const documentBlob = new Blob([pdfBytesArray[i]], {
+        type: 'application/pdf',
+      });
+      zip.file(baseNameString + '-' + (i + 1) + '.pdf', documentBlob);
     }
 
     return zip;
@@ -603,10 +597,10 @@ class PdfContainer {
 
   async exportPdf(selected) {
     const pdfDoc = await PDFLib.PDFDocument.create();
-    const pageContainers = this.pagesContainer.querySelectorAll(".page-container"); // Select all .page-container elements
+    const pageContainers = this.pagesContainer.querySelectorAll('.page-container'); // Select all .page-container elements
     for (var i = 0; i < pageContainers.length; i++) {
       if (!selected || window.selectedPages.includes(i + 1)) {
-        const img = pageContainers[i].querySelector("img"); // Find the img element within each .page-container
+        const img = pageContainers[i].querySelector('img'); // Find the img element within each .page-container
         if (!img) continue;
         let page;
         if (img.doc) {
@@ -646,7 +640,7 @@ class PdfContainer {
         }
         const rotation = img.style.rotate;
         if (rotation) {
-          const rotationAngle = parseInt(rotation.replace(/[^\d-]/g, ""));
+          const rotationAngle = parseInt(rotation.replace(/[^\d-]/g, ''));
           page.setRotation(PDFLib.degrees(page.getRotation().angle + rotationAngle));
         }
       }
@@ -655,11 +649,11 @@ class PdfContainer {
     pdfDoc.setProducer(stirlingPDFLabel);
 
     const pdfBytes = await pdfDoc.save();
-    const pdfBlob = new Blob([pdfBytes], { type: "application/pdf" });
+    const pdfBlob = new Blob([pdfBytes], {type: 'application/pdf'});
 
-    const filenameInput = document.getElementById("filename-input");
+    const filenameInput = document.getElementById('filename-input');
 
-    let inputArr = filenameInput.value.split(".");
+    let inputArr = filenameInput.value.split('.');
 
     if (inputArr !== null && inputArr !== undefined && inputArr.length > 0) {
       inputArr = inputArr.filter((n) => n); // remove all empty strings, nulls or undefined
@@ -668,17 +662,18 @@ class PdfContainer {
         inputArr.pop(); // remove right part after last dot
       }
 
-      filenameInput.value = inputArr.join("");
+      filenameInput.value = inputArr.join('');
       this.fileName = filenameInput.value;
     }
 
-    const separators = this.pagesContainer.querySelectorAll(".split-before");
-    if (separators.length !== 0) { // Split the pdf if there are separators.
-      const baseName = this.fileName ? this.fileName : "managed";
+    const separators = this.pagesContainer.querySelectorAll('.split-before');
+    if (separators.length !== 0) {
+      // Split the pdf if there are separators.
+      const baseName = this.fileName ? this.fileName : 'managed';
 
       const pagesArray = Array.from(this.pagesContainer.children);
       const splitters = [];
-      separators.forEach(page => {
+      separators.forEach((page) => {
         const pageIndex = pagesArray.indexOf(page);
         if (pageIndex !== 0) {
           splitters.push(pageIndex);
@@ -689,80 +684,80 @@ class PdfContainer {
       const archivedDocuments = await this.nameAndArchiveFiles(splitDocuments, baseName);
 
       const self = this;
-      archivedDocuments.generateAsync({ type: "base64" }).then(function (base64) {
-        const url = "data:application/zip;base64," + base64;
-        self.downloadLink = document.createElement("a");
+      archivedDocuments.generateAsync({type: 'base64'}).then(function (base64) {
+        const url = 'data:application/zip;base64,' + base64;
+        self.downloadLink = document.createElement('a');
         self.downloadLink.href = url;
-        self.downloadLink.setAttribute("download", baseName + ".zip");
-        self.downloadLink.setAttribute("target", "_blank");
+        self.downloadLink.setAttribute('download', baseName + '.zip');
+        self.downloadLink.setAttribute('target', '_blank');
         self.downloadLink.click();
       });
-
-    } else { // Continue normally if there are no separators
+    } else {
+      // Continue normally if there are no separators
 
       const url = URL.createObjectURL(pdfBlob);
-      const downloadOption = localStorage.getItem("downloadOption");
+      const downloadOption = localStorage.getItem('downloadOption');
 
-      if (!filenameInput.value.includes(".pdf")) {
-        filenameInput.value = filenameInput.value + ".pdf";
+      if (!filenameInput.value.includes('.pdf')) {
+        filenameInput.value = filenameInput.value + '.pdf';
         this.fileName = filenameInput.value;
       }
 
-      if (downloadOption === "sameWindow") {
+      if (downloadOption === 'sameWindow') {
         // Open the file in the same window
         window.location.href = url;
-      } else if (downloadOption === "newWindow") {
+      } else if (downloadOption === 'newWindow') {
         // Open the file in a new window
-        window.open(url, "_blank");
+        window.open(url, '_blank');
       } else {
         // Download the file
-        this.downloadLink = document.createElement("a");
-        this.downloadLink.id = "download-link";
+        this.downloadLink = document.createElement('a');
+        this.downloadLink.id = 'download-link';
         this.downloadLink.href = url;
         // downloadLink.download = this.fileName ? this.fileName : 'managed.pdf';
         // downloadLink.download = this.fileName;
-        this.downloadLink.setAttribute("download", this.fileName ? this.fileName : "managed.pdf");
-        this.downloadLink.setAttribute("target", "_blank");
+        this.downloadLink.setAttribute('download', this.fileName ? this.fileName : 'managed.pdf');
+        this.downloadLink.setAttribute('target', '_blank');
         this.downloadLink.onclick = this.setDownloadAttribute;
         this.downloadLink.click();
       }
     }
   }
 
-   resetPages() {
-    const pageContainers = this.pagesContainer.querySelectorAll(".page-container");
+  resetPages() {
+    const pageContainers = this.pagesContainer.querySelectorAll('.page-container');
 
     pageContainers.forEach((container, index) => {
-      container.id = "page-container-" + (index + 1);
+      container.id = 'page-container-' + (index + 1);
     });
 
-    const checkboxes = document.querySelectorAll(".pdf-actions_checkbox");
+    const checkboxes = document.querySelectorAll('.pdf-actions_checkbox');
     window.selectAll = false;
-    const selectIcon = document.getElementById("select-All-Container");
-    const deselectIcon = document.getElementById("deselect-All-Container");
+    const selectIcon = document.getElementById('select-All-Container');
+    const deselectIcon = document.getElementById('deselect-All-Container');
 
-      selectIcon.style.display = "inline";
-      deselectIcon.style.display = "none";
+    selectIcon.style.display = 'inline';
+    deselectIcon.style.display = 'none';
 
     checkboxes.forEach((checkbox) => {
       const pageNumber = Array.from(checkbox.parentNode.parentNode.children).indexOf(checkbox.parentNode) + 1;
 
-        const index = window.selectedPages.indexOf(pageNumber);
-        if (index !== -1) {
-          window.selectedPages.splice(index, 1);
-        }
+      const index = window.selectedPages.indexOf(pageNumber);
+      if (index !== -1) {
+        window.selectedPages.splice(index, 1);
+      }
     });
     window.toggleSelectPageVisibility();
   }
 
   setDownloadAttribute() {
-    this.downloadLink.setAttribute("download", this.fileName ? this.fileName : "managed.pdf");
+    this.downloadLink.setAttribute('download', this.fileName ? this.fileName : 'managed.pdf');
   }
 
-  updateFilename(fileName = "") {
-    const filenameInput = document.getElementById("filename-input");
-    const pagesContainer = document.getElementById("pages-container");
-    const downloadBtn = document.getElementById("export-button");
+  updateFilename(fileName = '') {
+    const filenameInput = document.getElementById('filename-input');
+    const pagesContainer = document.getElementById('pages-container');
+    const downloadBtn = document.getElementById('export-button');
 
     downloadBtn.disabled = pagesContainer.childElementCount === 0;
 
@@ -786,38 +781,36 @@ class PdfContainer {
     // }
   }
 
-
   toggleSelectPageVisibility() {
     window.selectPage = !window.selectPage;
-    const checkboxes = document.querySelectorAll(".pdf-actions_checkbox");
-    checkboxes.forEach(checkbox => {
-      checkbox.classList.toggle("hidden", !window.selectPage);
+    const checkboxes = document.querySelectorAll('.pdf-actions_checkbox');
+    checkboxes.forEach((checkbox) => {
+      checkbox.classList.toggle('hidden', !window.selectPage);
     });
-    const deleteButton = document.getElementById("delete-button");
-    deleteButton.classList.toggle("hidden", !window.selectPage);
-    const selectedPages = document.getElementById("selected-pages-display");
-    selectedPages.classList.toggle("hidden", !window.selectPage);
-    const selectAll = document.getElementById("select-All-Container");
-    selectAll.classList.toggle("hidden", !window.selectPage);
-    const exportSelected = document.getElementById("export-selected-button");
-    exportSelected.classList.toggle("hidden", !window.selectPage);
-    const selectPagesButton = document.getElementById("select-pages-button");
-    selectPagesButton.style.opacity = window.selectPage ? "1" : "0.5";
+    const deleteButton = document.getElementById('delete-button');
+    deleteButton.classList.toggle('hidden', !window.selectPage);
+    const selectedPages = document.getElementById('selected-pages-display');
+    selectedPages.classList.toggle('hidden', !window.selectPage);
+    const selectAll = document.getElementById('select-All-Container');
+    selectAll.classList.toggle('hidden', !window.selectPage);
+    const exportSelected = document.getElementById('export-selected-button');
+    exportSelected.classList.toggle('hidden', !window.selectPage);
+    const selectPagesButton = document.getElementById('select-pages-button');
+    selectPagesButton.style.opacity = window.selectPage ? '1' : '0.5';
 
     if (window.selectPage) {
       this.updatePageNumbersAndCheckboxes();
     }
   }
 
-
   updatePageNumbersAndCheckboxes() {
-    const pageDivs = document.querySelectorAll(".pdf-actions_container");
+    const pageDivs = document.querySelectorAll('.pdf-actions_container');
 
     pageDivs.forEach((div, index) => {
       const pageNumber = index + 1;
-      const checkbox = div.querySelector(".pdf-actions_checkbox");
+      const checkbox = div.querySelector('.pdf-actions_checkbox');
       checkbox.id = `selectPageCheckbox-${pageNumber}`;
-      checkbox.setAttribute("data-page-number", pageNumber);
+      checkbox.setAttribute('data-page-number', pageNumber);
       checkbox.checked = window.selectedPages.includes(pageNumber);
     });
   }
@@ -835,8 +828,10 @@ function detectImageType(uint8Array) {
   }
 
   // Check for TIFF signature (little-endian and big-endian)
-  if ((uint8Array[0] === 73 && uint8Array[1] === 73 && uint8Array[2] === 42 && uint8Array[3] === 0) ||
-    (uint8Array[0] === 77 && uint8Array[1] === 77 && uint8Array[2] === 0 && uint8Array[3] === 42)) {
+  if (
+    (uint8Array[0] === 73 && uint8Array[1] === 73 && uint8Array[2] === 42 && uint8Array[3] === 0) ||
+    (uint8Array[0] === 77 && uint8Array[1] === 77 && uint8Array[2] === 0 && uint8Array[3] === 42)
+  ) {
     return 'TIFF';
   }
 
@@ -848,6 +843,4 @@ function detectImageType(uint8Array) {
   return 'UNKNOWN';
 }
 
-
-
 export default PdfContainer;

src/main/resources/static/js/multitool/UndoManager.js

@@ -0,0 +1,65 @@
+export class UndoManager {
+  _undoStack;
+  _redoStack;
+
+  constructor() {
+    this._undoStack = [];
+    this._redoStack = [];
+  }
+
+  pushUndo(command) {
+    this._undoStack.push(command);
+    this._dispatchStateChange();
+  }
+
+  pushRedo(command) {
+    this._redoStack.push(command);
+    this._dispatchStateChange();
+  }
+
+  pushUndoClearRedo(command) {
+    this._undoStack.push(command);
+    this._redoStack = [];
+    this._dispatchStateChange();
+  }
+
+  undo() {
+    if (!this.canUndo()) return;
+
+    let cmd = this._undoStack.pop();
+    cmd.undo();
+
+    this._redoStack.push(cmd);
+    this._dispatchStateChange();
+  }
+
+  canUndo() {
+    return this._undoStack && this._undoStack.length > 0;
+  }
+
+  redo() {
+    if (!this.canRedo()) return;
+
+    let cmd = this._redoStack.pop();
+    cmd.redo();
+
+    this._undoStack.push(cmd);
+    this._dispatchStateChange();
+  }
+
+  canRedo() {
+    return this._redoStack && this._redoStack.length > 0;
+  }
+
+  _dispatchStateChange() {
+    document.dispatchEvent(
+      new CustomEvent("undo-manager-update", {
+        bubbles: true,
+        detail: {
+          canUndo: this.canUndo(),
+          canRedo: this.canRedo(),
+        },
+      })
+    );
+  }
+}