new page

README.md

@@ -27,6 +27,11 @@ Feel free to request any features or bug fixes either in github issues or our [D
 - Convert PDFs to and from images
 - Reorganize PDF pages into different orders.
 - Add/Generate signatures
+- Format PDFs into a multi-paged page
+- Scale page contents size by set % 
+- Adjust Contrast
+- Crop PDF
+- Auto Split PDF (With physically scanned page dividers)
 - Flatten PDFs
 - Repair PDFs
 - Detect and remove blank pages
@@ -39,8 +44,14 @@ Feel free to request any features or bug fixes either in github issues or our [D
 - Add watermark(s)
 - Convert Any common file to PDF (using LibreOffice)
 - Convert PDF to Word/Powerpoint/Others (using LibreOffice)
+- Convert HTML to PDF
+- URL to PDF
 - Extract images from PDF
+- Extract images from Scans
+- Add page numbers
+- Auto rename file by detecting PDF header text
 - OCR on PDF (Using OCRMyPDF)
+- PDF/A conversion (Using OCRMyPDF)
 - Edit metadata
 - Dark mode support.
 - Custom download options (see [here](https://github.com/Frooodle/Stirling-PDF/blob/main/images/settings.png) for example)

build.gradle

@@ -8,7 +8,7 @@ plugins {
 }
 
 group = 'stirling.software'
-version = '0.11.0'
+version = '0.11.2'
 sourceCompatibility = '17'
 
 repositories {

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

@@ -43,7 +43,7 @@ public class ConvertImgPDFController {
             @Parameter(description = "Choose between a single image containing all pages or separate images for each page", schema = @Schema(allowableValues = {"single", "multiple"}))
                     String singleOrMultiple,
             @RequestParam("colorType")
-            @Parameter(description = "The color type of the output image(s)", schema = @Schema(allowableValues = {"rgb", "greyscale", "blackwhite"}))
+            @Parameter(description = "The color type of the output image(s)", schema = @Schema(allowableValues = {"color", "greyscale", "blackwhite"}))
                     String colorType,
             @RequestParam("dpi")
             @Parameter(description = "The DPI (dots per inch) for the output image(s)")
@@ -94,7 +94,7 @@ public class ConvertImgPDFController {
             @Parameter(description = "Whether to stretch the images to fit the PDF page or maintain the aspect ratio", example = "false")
                     boolean stretchToFit,
             @RequestParam("colorType")
-            @Parameter(description = "The color type of the output image(s)", schema = @Schema(allowableValues = {"rgb", "greyscale", "blackwhite"}))
+            @Parameter(description = "The color type of the output image(s)", schema = @Schema(allowableValues = {"color", "greyscale", "blackwhite"}))
                     String colorType,
             @RequestParam(defaultValue = "false", name = "autoRotate")
             @Parameter(description = "Whether to automatically rotate the images to better fit the PDF page", example = "true")

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

@@ -41,20 +41,22 @@ public class AutoSplitPdfController {
     @PostMapping(value = "/auto-split-pdf", consumes = "multipart/form-data")
     @Operation(summary = "Auto split PDF pages into separate documents", description = "This endpoint accepts a PDF file, scans each page for a specific QR code, and splits the document at the QR code boundaries. The output is a zip file containing each separate PDF document. Input:PDF Output:ZIP Type:SISO")
     public ResponseEntity<byte[]> autoSplitPdf(
-        @RequestParam("fileInput") @Parameter(description = "The input PDF file which needs to be split into separate documents based on QR code boundaries.", required = true) MultipartFile file)
+        @RequestParam("fileInput") @Parameter(description = "The input PDF file which needs to be split into separate documents based on QR code boundaries.", required = true) MultipartFile file,
+        @RequestParam(value ="duplexMode",defaultValue = "false") @Parameter(description = "Flag indicating if the duplex mode is active, where the page after the divider also gets removed.", required = false) boolean duplexMode)
         throws IOException {
+
         InputStream inputStream = file.getInputStream();
         PDDocument document = PDDocument.load(inputStream);
         PDFRenderer pdfRenderer = new PDFRenderer(document);
 
         List<PDDocument> splitDocuments = new ArrayList<>();
-        List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();  // create this list to store ByteArrayOutputStreams for zipping
+        List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
 
         for (int page = 0; page < document.getNumberOfPages(); ++page) {
             BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 150);
             String result = decodeQRCode(bim);
-            
-            if(QR_CONTENT.equals(result) && page != 0) {
+
+            if (QR_CONTENT.equals(result) && page != 0) {
                 splitDocuments.add(new PDDocument());
             }
 
@@ -65,9 +67,16 @@ public class AutoSplitPdfController {
                 firstDocument.addPage(document.getPage(page));
                 splitDocuments.add(firstDocument);
             }
+
+            // If duplexMode is true and current page is a divider, then skip next page
+            if (duplexMode && QR_CONTENT.equals(result)) {
+                page++;
+            }
         }
 
-        // After all pages are added to splitDocuments, convert each to ByteArrayOutputStream and add to splitDocumentsBoas
+        // Remove split documents that have no pages
+        splitDocuments.removeIf(pdDocument -> pdDocument.getNumberOfPages() == 0);
+
         for (PDDocument splitDocument : splitDocuments) {
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
             splitDocument.save(baos);
@@ -77,18 +86,16 @@ public class AutoSplitPdfController {
 
         document.close();
 
-        // After this line, you can find your zip logic integrated
         Path zipFile = Files.createTempFile("split_documents", ".zip");
         String filename = file.getOriginalFilename().replaceFirst("[.][^.]+$", "");
         byte[] data;
+
         try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipFile))) {
-            // loop through the split documents and write them to the zip file
             for (int i = 0; i < splitDocumentsBoas.size(); i++) {
-                String fileName = filename + "_" + (i + 1) + ".pdf"; // You should replace "originalFileName" with the real file name
+                String fileName = filename + "_" + (i + 1) + ".pdf";
                 ByteArrayOutputStream baos = splitDocumentsBoas.get(i);
                 byte[] pdf = baos.toByteArray();
 
-                // Add PDF file to the zip
                 ZipEntry pdfEntry = new ZipEntry(fileName);
                 zipOut.putNextEntry(pdfEntry);
                 zipOut.write(pdf);
@@ -101,9 +108,6 @@ public class AutoSplitPdfController {
             Files.delete(zipFile);
         }
 
-        
-
-        // return the Resource in the response
         return WebResponseUtils.bytesToWebResponse(data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
     }
 

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

@@ -1,30 +1,25 @@
 package stirling.software.SPDF.controller.web;
-
-import java.io.File;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.core.io.support.ResourcePatternUtils;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
 
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.HashMap;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ModelAttribute;
-
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import io.swagger.v3.oas.annotations.Hidden;
@@ -123,18 +118,30 @@ public class GeneralWebController {
         model.addAttribute("fonts", getFontNames());
         return "sign";
     }
+    
+    @Autowired
+    private ResourceLoader resourceLoader;
+    
     private List<String> getFontNames() {
         try {
-            return Files.list(Paths.get("src/main/resources/static/fonts"))
-                    .map(Path::getFileName)
-                    .map(Path::toString)
-                    .filter(name -> name.endsWith(".woff2"))
-                    .map(name -> name.substring(0, name.length() - 6)) // Remove .woff2 extension
+            Resource[] resources = ResourcePatternUtils.getResourcePatternResolver(resourceLoader)
+                    .getResources("classpath:static/fonts/*.woff2");
+            
+            return Arrays.stream(resources)
+                    .map(resource -> {
+                        try {
+                            String filename = resource.getFilename();
+                            return filename.substring(0, filename.length() - 6); // Remove .woff2 extension
+                        } catch (Exception e) {
+                            throw new RuntimeException("Error processing filename", e);
+                        }
+                    })
                     .collect(Collectors.toList());
-        } catch (IOException e) {
+        } catch (Exception e) {
             throw new RuntimeException("Failed to read font directory", e);
         }
     }
+
     
 
     @GetMapping("/crop")

src/main/resources/messages_ar_AR.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_ca_CA.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_de_DE.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_en_GB.properties

@@ -309,6 +309,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_es_ES.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_eu_ES.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_fr_FR.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_it_IT.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_ja_JP.properties

@@ -462,6 +462,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_ko_KR.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_pl_PL.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_pt_BR.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_ro_RO.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_ru_RU.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_sv_SE.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

src/main/resources/messages_zh_CN.properties

@@ -429,6 +429,7 @@ autoSplitPDF.selectText.2=Scan all your documents at once by inserting the divid
 autoSplitPDF.selectText.3=Upload the single large scanned PDF file and let Stirling PDF handle the rest.
 autoSplitPDF.selectText.4=Divider pages are automatically detected and removed, guaranteeing a neat final document.
 autoSplitPDF.formPrompt=Submit PDF containing Stirling-PDF Page dividers:
+autoSplitPDF.duplexMode=Duplex Mode (Front and back scanning)
 autoSplitPDF.dividerDownload1=Download 'Auto Splitter Divider (minimal).pdf'
 autoSplitPDF.dividerDownload2=Download 'Auto Splitter Divider (with instructions).pdf'
 autoSplitPDF.submit=Submit

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

@@ -154,11 +154,22 @@ async function submitMultiPdfForm(url, files) {
 	if (zipFiles) {
 		jszip = new JSZip();
 	}
-
+	
+	
+	// Get the form with the method attribute set to POST
+	let postForm = document.querySelector('form[method="POST"]');
+	
 	// Get existing form data
-	let formData = new FormData($('form')[0]);
+	let formData;
+	if (postForm) {
+	    formData = new FormData($(postForm)[0]);  // Convert the form to a jQuery object and get the raw DOM element
+	} else {
+	    console.log("No form with POST method found.");
+	}
+	//Remove file to reuse parameters for other runs
 	formData.delete('fileInput');
 
+
 	const CONCURRENCY_LIMIT = 8;
 	const chunks = [];
 	for (let i = 0; i < Array.from(files).length; i += CONCURRENCY_LIMIT) {
@@ -169,10 +180,11 @@ async function submitMultiPdfForm(url, files) {
 		const promises = chunk.map(async file => {
 			let fileFormData = new FormData();
 			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]); 
 			}
 
 			try {

src/main/resources/templates/auto-split-pdf.html

@@ -25,6 +25,10 @@
 						<form method="post" enctype="multipart/form-data">
 						    <p th:text="#{autoSplitPDF.formPrompt}"></p>
 						    <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false)}"></div>
+						    <div class="form-check">
+                                <input type="checkbox" class="form-check-input" name="duplexMode" id="duplexMode"> 
+                                <label class="ml-3" for="duplexMode" th:text=#{autoSplitPDF.duplexMode}></label>
+                            </div>
 						    <p><a th:href="@{files/Auto Splitter Divider (minimal).pdf}" download th:text="#{autoSplitPDF.dividerDownload1}"></a></p>
 						    <p><a th:href="@{files/Auto Splitter Divider (with instructions).pdf}" download th:text="#{autoSplitPDF.dividerDownload2}"></a></p>
 						    <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{autoSplitPDF.submit}"></button>

src/main/resources/templates/convert/img-to-pdf.html

@@ -31,7 +31,7 @@
                             </div>
                             <div class="form-group">
                                 <label th:text="#{pdfToImage.colorType}"></label> 
-                                <select class="form-control" name="colorType">
+                                <select class="form-control" id="colorType" name="colorType">
                                     <option value="color" th:text="#{pdfToImage.color}"></option>
                                     <option value="greyscale" th:text="#{pdfToImage.grey}"></option>
                                     <option value="blackwhite" th:text="#{pdfToImage.blackwhite}"></option>

src/main/resources/templates/convert/pdf-to-html.html

@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html th:lang="${#locale.toString()}" th:lang-direction="#{language.direction}" xmlns:th="http://www.thymeleaf.org">
 
-<th:block th:insert="~{fragments/common :: head(title=#{HTMLToPDF.title})}"></th:block>
+<th:block th:insert="~{fragments/common :: head(title=#{PDFToHTML.title})}"></th:block>
 <body>
     <th:block th:insert="~{fragments/common :: game}"></th:block>
     <div id="page-container">
@@ -11,14 +11,14 @@
             <div class="container">
                 <div class="row justify-content-center">
                     <div class="col-md-6">
-                        <h2 th:text="#{HTMLToPDF.header}"></h2>
-                        <form method="post" enctype="multipart/form-data" th:action="@{html-to-pdf}">
+                        <h2 th:text="#{PDFToHTML.header}"></h2>
+                        <form method="post" enctype="multipart/form-data" th:action="@{pdf-to-html}">
                             <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
                             <br>
-                            <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{HTMLToPDF.submit}"></button>
+                            <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{PDFToHTML.submit}"></button>
 
                         </form>
-                        <p class="mt-3" th:text="#{HTMLToPDF.credit}"></p>
+                        <p class="mt-3" th:text="#{PDFToHTML.credit}"></p>
                     </div>
                 </div>
             </div>