Split pages support n function and other stuff

.github/workflows/swagger.yml

@@ -0,0 +1,45 @@
+name: Update Swagger
+
+on:
+  workflow_dispatch:
+  push:
+    branches: 
+      - master
+jobs:
+  push:
+
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v3.5.2
+    
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3.11.0
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+        
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+
+    - name: Generate Swagger documentation
+      run: ./gradlew generateOpenApiDocs
+
+    - name: Get version number
+      id: versionNumber
+      run: echo "::set-output name=versionNumber::$(./gradlew printVersion --quiet | tail -1)"
+      
+    - name: Commit and push if it changed
+      run: |
+        git config --local user.email "action@github.com"
+        git config --local user.name "GitHub Action"
+        git add -A
+        git diff --quiet && git diff --staged --quiet || git commit -m "Updated Swagger documentation"
+        git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}.git
+        git push
+
+    - name: Upload Swagger Documentation to SwaggerHub
+      run: |
+        curl -X POST -H "Authorization: ${SWAGGERHUB_API_KEY}" -H "Content-Type: application/json" -d @SwaggerDoc.json "https://api.swaggerhub.com/apis/Frooodle/Stirling-PDF/${{ steps.versionNumber.outputs.versionNumber }}?isPrivate=false&force=true"
+      env:
+        SWAGGERHUB_API_KEY: ${{ secrets.SWAGGERHUB_API_KEY }}

.gitignore

@@ -14,6 +14,7 @@ local.properties
 .recommenders
 .classpath
 .project
+version.properties
 
 # Gradle
 .gradle

build.gradle

@@ -2,6 +2,7 @@ plugins {
 	id 'java'
 	id 'org.springframework.boot' version '3.1.0'
 	id 'io.spring.dependency-management' version '1.1.0'
+	id 'org.springdoc.openapi-gradle-plugin' version '1.6.0'
 }
 
 group = 'stirling.software'
@@ -12,6 +13,12 @@ repositories {
 	mavenCentral()
 }
 
+openApi {
+    apiDocsUrl = "http://localhost:8080/v3/api-docs"
+    outputDir = file("/")
+    outputFileName = "SwaggerDoc.json"
+}
+
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-web:3.1.0'
 	implementation 'org.springframework.boot:spring-boot-starter-thymeleaf:3.1.0'
@@ -34,6 +41,18 @@ dependencies {
 
 }
 
+task writeVersion {
+    def propsFile = file('src/main/resources/version.properties')
+    def props = new Properties()
+    props.setProperty('version', version)
+    props.store(propsFile.newWriter(), null)
+}
+
+tasks.matching { it.name == 'generateOpenApiDocs' }.all {
+    dependsOn writeVersion
+}
+
+
 jar {
     enabled = false
     manifest {

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

@@ -1,5 +1,9 @@
 package stirling.software.SPDF.config;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -10,13 +14,23 @@ import io.swagger.v3.oas.models.info.Info;
 @Configuration
 public class OpenApiConfig {
 
-    @Bean
-    public OpenAPI customOpenAPI() {
-        String version = getClass().getPackage().getImplementationVersion();
-        version =  (version != null) ? version : "1.0.0";
-        
-        return new OpenAPI().components(new Components()).info(
-                new Info().title("Stirling PDF API").version(version).description("API documentation for all Server-Side processing.\nPlease note some functionality might be UI only and missing from here."));
-    }
+	@Bean
+	public OpenAPI customOpenAPI() {
+	    String version = getClass().getPackage().getImplementationVersion();
+	    if (version == null) {
+	        Properties props = new Properties();
+	        try (InputStream input = getClass().getClassLoader().getResourceAsStream("version.properties")) {
+	            props.load(input);
+	            version = props.getProperty("version");
+	        } catch (IOException ex) {
+	            ex.printStackTrace();
+	            version = "1.0.0"; // default version if all else fails
+	        }
+	    }
+
+	    return new OpenAPI().components(new Components()).info(
+	            new Info().title("Stirling PDF API").version(version).description("API documentation for all Server-Side processing.\nPlease note some functionality might be UI only and missing from here."));
+	}
+
 
 }

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

@@ -1,16 +1,8 @@
 package stirling.software.SPDF.controller.api;
 
 import java.io.IOException;
-import io.swagger.v3.oas.annotations.media.Schema;
-import stirling.software.SPDF.utils.WebResponseUtils;
-
 import java.util.ArrayList;
 import java.util.List;
-import javax.script.ScriptEngineManager;
-import javax.script.ScriptEngine;
-import javax.script.ScriptException;
-
-import javax.script.ScriptEngine;
 
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -25,6 +17,9 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
+import stirling.software.SPDF.utils.GeneralUtils;
+import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
 public class RearrangePagesPDFController {
@@ -43,7 +38,7 @@ public class RearrangePagesPDFController {
 		// Split the page order string into an array of page numbers or range of numbers
 		String[] pageOrderArr = pagesToDelete.split(",");
 
-		List<Integer> pagesToRemove = pageOrderToString(pageOrderArr, document.getNumberOfPages());
+		List<Integer> pagesToRemove = GeneralUtils.parsePageList(pageOrderArr, document.getNumberOfPages());
 
 		for (int i = pagesToRemove.size() - 1; i >= 0; i--) {
 			int pageIndex = pagesToRemove.get(i);
@@ -180,7 +175,7 @@ public class RearrangePagesPDFController {
 			if (customMode != null && customMode.length() > 0) {
 				newPageOrder = processCustomMode(customMode, totalPages);
 			} else {
-				newPageOrder = pageOrderToString(pageOrderArr, totalPages);
+				newPageOrder = GeneralUtils.parsePageList(pageOrderArr, totalPages);
 			}
 
 			// Create a new list to hold the pages in the new order
@@ -207,63 +202,6 @@ public class RearrangePagesPDFController {
 		}
 	}
 
-	private List<Integer> pageOrderToString(String[] pageOrderArr, int totalPages) {
-	    List<Integer> newPageOrder = new ArrayList<>();
-
-	    // loop through the page order array
-	    for (String element : pageOrderArr) {
-	        // check if the element contains a range of pages
-	        if (element.matches("\\d*n\\+?-?\\d*|\\d*\\+?n")) {
-	            // Handle page order as a function
-	            int coefficient = 0;
-	            int constant = 0;
-	            boolean coefficientExists = false;
-	            boolean constantExists = false;
-
-	            if (element.contains("n")) {
-	                String[] parts = element.split("n");
-	                if (!parts[0].equals("") && parts[0] != null) {
-	                    coefficient = Integer.parseInt(parts[0]);
-	                    coefficientExists = true;
-	                }
-	                if (parts.length > 1 && !parts[1].equals("") && parts[1] != null) {
-	                    constant = Integer.parseInt(parts[1]);
-	                    constantExists = true;
-	                }
-	            } else if (element.contains("+")) {
-	                constant = Integer.parseInt(element.replace("+", ""));
-	                constantExists = true;
-	            }
-
-	            for (int i = 1; i <= totalPages; i++) {
-	                int pageNum = coefficientExists ? coefficient * i : i;
-	                pageNum += constantExists ? constant : 0;
-
-	                if (pageNum <= totalPages && pageNum > 0) {
-	                    newPageOrder.add(pageNum - 1);
-	                }
-	            }
-	        } else if (element.contains("-")) {
-	            // split the range into start and end page
-	            String[] range = element.split("-");
-	            int start = Integer.parseInt(range[0]);
-	            int end = Integer.parseInt(range[1]);
-	            // check if the end page is greater than total pages
-	            if (end > totalPages) {
-	                end = totalPages;
-	            }
-	            // loop through the range of pages
-	            for (int j = start; j <= end; j++) {
-	                // print the current index
-	                newPageOrder.add(j - 1);
-	            }
-	        } else {
-	            // if the element is a single page
-	            newPageOrder.add(Integer.parseInt(element) - 1);
-	        }
-	    }
-
-	    return newPageOrder;
-	}
+	
 
 }

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

@@ -3,10 +3,18 @@ package stirling.software.SPDF.controller.api;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -20,14 +28,17 @@ import com.itextpdf.kernel.pdf.PdfPage;
 import com.itextpdf.kernel.pdf.PdfReader;
 import com.itextpdf.kernel.pdf.PdfWriter;
 import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
+import com.itextpdf.kernel.pdf.canvas.parser.EventType;
+import com.itextpdf.kernel.pdf.canvas.parser.PdfCanvasProcessor;
+import com.itextpdf.kernel.pdf.canvas.parser.data.IEventData;
+import com.itextpdf.kernel.pdf.canvas.parser.data.TextRenderInfo;
+import com.itextpdf.kernel.pdf.canvas.parser.listener.IEventListener;
 import com.itextpdf.kernel.pdf.xobject.PdfFormXObject;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.media.Schema;
 import stirling.software.SPDF.utils.WebResponseUtils;
-import java.util.HashMap;
-import java.util.Map;
 @RestController
 public class ScalePagesController {
 
@@ -119,4 +130,128 @@ public class ScalePagesController {
 		pdfDoc.close();
 		return WebResponseUtils.bytesToWebResponse(pdfContent, file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scaled.pdf");
 	}
+	
+	
+	
+	
+	
+	
+	
+
+@PostMapping(value = "/auto-crop", consumes = "multipart/form-data")
+public ResponseEntity<byte[]> cropPdf(@RequestParam("fileInput") MultipartFile file) throws IOException {
+    byte[] bytes = file.getBytes();
+    PdfReader reader = new PdfReader(new ByteArrayInputStream(bytes));
+    PdfDocument pdfDoc = new PdfDocument(reader);
+
+    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+    PdfWriter writer = new PdfWriter(baos);
+    PdfDocument outputPdf = new PdfDocument(writer);
+    
+    int totalPages = pdfDoc.getNumberOfPages();
+    for (int i = 1; i <= totalPages; i++) {
+        PdfPage page = pdfDoc.getPage(i);
+        Rectangle originalMediaBox = page.getMediaBox();
+        
+        Rectangle contentBox = determineContentBox(page);
+        
+        // Make sure we don't go outside the original media box.
+        Rectangle intersection = originalMediaBox.getIntersection(contentBox);
+        page.setCropBox(intersection);
+
+        // Copy page to the new document
+        outputPdf.addPage(page.copyTo(outputPdf));
+    }
+
+    outputPdf.close();
+    byte[] pdfContent = baos.toByteArray();
+    pdfDoc.close();
+    return ResponseEntity.ok()
+            .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_cropped.pdf\"")
+            .contentType(MediaType.APPLICATION_PDF)
+            .body(pdfContent);
+}
+
+private Rectangle determineContentBox(PdfPage page) {
+    // Extract the text from the page and find the bounding box.
+    TextBoundingRectangleFinder finder = new TextBoundingRectangleFinder();
+    PdfCanvasProcessor processor = new PdfCanvasProcessor(finder);
+    processor.processPageContent(page);
+    return finder.getBoundingBox();
+}
+private static class TextBoundingRectangleFinder implements IEventListener {
+    private List<Rectangle> allTextBoxes = new ArrayList<>();
+    
+    public Rectangle getBoundingBox() {
+        // Sort the text boxes based on their vertical position
+        allTextBoxes.sort(Comparator.comparingDouble(Rectangle::getTop));
+
+        // Consider a box an outlier if its top is more than 1.5 times the IQR above the third quartile.
+        int q1Index = allTextBoxes.size() / 4;
+        int q3Index = 3 * allTextBoxes.size() / 4;
+        double iqr = allTextBoxes.get(q3Index).getTop() - allTextBoxes.get(q1Index).getTop();
+        double threshold = allTextBoxes.get(q3Index).getTop() + 1.5 * iqr;
+
+        // Initialize boundingBox to the first non-outlier box
+        int i = 0;
+        while (i < allTextBoxes.size() && allTextBoxes.get(i).getTop() > threshold) {
+            i++;
+        }
+        if (i == allTextBoxes.size()) {
+            // If all boxes are outliers, just return the first one
+            return allTextBoxes.get(0);
+        }
+        Rectangle boundingBox = allTextBoxes.get(i);
+
+        // Extend the bounding box to include all non-outlier boxes
+        for (; i < allTextBoxes.size(); i++) {
+            Rectangle textBoundingBox = allTextBoxes.get(i);
+            if (textBoundingBox.getTop() > threshold) {
+                // This box is an outlier, skip it
+                continue;
+            }
+            float left = Math.min(boundingBox.getLeft(), textBoundingBox.getLeft());
+            float bottom = Math.min(boundingBox.getBottom(), textBoundingBox.getBottom());
+            float right = Math.max(boundingBox.getRight(), textBoundingBox.getRight());
+            float top = Math.max(boundingBox.getTop(), textBoundingBox.getTop());
+
+            // Add a small padding around the bounding box
+            float padding = 10;
+            boundingBox = new Rectangle(left - padding, bottom - padding, right - left + 2 * padding, top - bottom + 2 * padding);
+        }
+        return boundingBox;
+    }
+
+    @Override
+    public void eventOccurred(IEventData data, EventType type) {
+        if (type == EventType.RENDER_TEXT) {
+            TextRenderInfo renderInfo = (TextRenderInfo) data;
+            allTextBoxes.add(renderInfo.getBaseline().getBoundingRectangle());
+        }
+    }
+
+    @Override
+    public Set<EventType> getSupportedEvents() {
+        return Collections.singleton(EventType.RENDER_TEXT);
+    }
+}
+
+
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
 }

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

@@ -6,7 +6,6 @@ import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.stream.Collectors;
 import java.util.zip.ZipEntry;
@@ -29,6 +28,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
+import stirling.software.SPDF.utils.GeneralUtils;
 
 @RestController
 public class SplitPDFController {
@@ -58,39 +58,28 @@ public class SplitPDFController {
                 pageNumbers.add(i);
             }
         } else {
-            List<String> pageNumbersStr = new ArrayList<>(Arrays.asList(pages.split(",")));
-            if (!pageNumbersStr.contains(String.valueOf(document.getNumberOfPages()))) {
-                String lastpage = String.valueOf(document.getNumberOfPages());
-                pageNumbersStr.add(lastpage);
-            }
-            for (String page : pageNumbersStr) {
-                if (page.contains("-")) {
-                    String[] range = page.split("-");
-                    int start = Integer.parseInt(range[0]);
-                    int end = Integer.parseInt(range[1]);
-                    for (int i = start; i <= end; i++) {
-                        pageNumbers.add(i);
-                    }
-                } else {
-                    pageNumbers.add(Integer.parseInt(page));
-                }
+            String[] splitPoints = pages.split(",");
+            for (String splitPoint : splitPoints) {
+                List<Integer> orderedPages = GeneralUtils.parsePageList(new String[] {splitPoint}, document.getNumberOfPages());
+                pageNumbers.addAll(orderedPages);
             }
+            // Add the last page as a split point
+            pageNumbers.add(document.getNumberOfPages() - 1);
         }
 
         logger.info("Splitting PDF into pages: {}", pageNumbers.stream().map(String::valueOf).collect(Collectors.joining(",")));
 
         // split the document
         List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
-        int currentPage = 0;
-        for (int pageNumber : pageNumbers) {
+        int previousPageNumber = 0;
+        for (int splitPoint : pageNumbers) {
             try (PDDocument splitDocument = new PDDocument()) {
-                for (int i = currentPage; i < pageNumber; i++) {
+                for (int i = previousPageNumber; i <= splitPoint; i++) {
                     PDPage page = document.getPage(i);
                     splitDocument.addPage(page);
                     logger.debug("Adding page {} to split document", i);
                 }
-                currentPage = pageNumber;
-                logger.debug("Setting current page to {}", currentPage);
+                previousPageNumber = splitPoint + 1;
 
                 ByteArrayOutputStream baos = new ByteArrayOutputStream();
                 splitDocument.save(baos);
@@ -102,6 +91,7 @@ public class SplitPDFController {
             }
         }
 
+
         // closing the original document
         document.close();
 

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

@@ -1,9 +1,6 @@
 package stirling.software.SPDF.controller.api.security;
 
 import java.io.ByteArrayInputStream;
-import io.swagger.v3.oas.annotations.media.Schema;
-import stirling.software.SPDF.utils.WebResponseUtils;
-
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -53,6 +50,8 @@ import com.itextpdf.signatures.SignatureUtil;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
+import stirling.software.SPDF.utils.WebResponseUtils;
 @RestController
 public class CertSignController {
 

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

@@ -122,4 +122,11 @@ public class OtherWebController {
         return "other/scale-pages";
     }
     
+    @GetMapping("/auto-crop")
+    @Hidden
+    public String autoCropForm(Model model) {
+        model.addAttribute("currentPage", "auto-crop");
+        return "other/auto-crop";
+    }
+    
 }

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

@@ -1,5 +1,8 @@
 package stirling.software.SPDF.utils;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class GeneralUtils {
 
 	public static Long convertSizeToBytes(String sizeStr) {
@@ -27,4 +30,62 @@ public class GeneralUtils {
 	    return null;
 	}
 
+	public static List<Integer> parsePageList(String[] pageOrderArr, int totalPages) {
+	    List<Integer> newPageOrder = new ArrayList<>();
+
+	    // loop through the page order array
+	    for (String element : pageOrderArr) {
+	        // check if the element contains a range of pages
+	        if (element.matches("\\d*n\\+?-?\\d*|\\d*\\+?n")) {
+	            // Handle page order as a function
+	            int coefficient = 0;
+	            int constant = 0;
+	            boolean coefficientExists = false;
+	            boolean constantExists = false;
+
+	            if (element.contains("n")) {
+	                String[] parts = element.split("n");
+	                if (!parts[0].equals("") && parts[0] != null) {
+	                    coefficient = Integer.parseInt(parts[0]);
+	                    coefficientExists = true;
+	                }
+	                if (parts.length > 1 && !parts[1].equals("") && parts[1] != null) {
+	                    constant = Integer.parseInt(parts[1]);
+	                    constantExists = true;
+	                }
+	            } else if (element.contains("+")) {
+	                constant = Integer.parseInt(element.replace("+", ""));
+	                constantExists = true;
+	            }
+
+	            for (int i = 1; i <= totalPages; i++) {
+	                int pageNum = coefficientExists ? coefficient * i : i;
+	                pageNum += constantExists ? constant : 0;
+
+	                if (pageNum <= totalPages && pageNum > 0) {
+	                    newPageOrder.add(pageNum - 1);
+	                }
+	            }
+	        } else if (element.contains("-")) {
+	            // split the range into start and end page
+	            String[] range = element.split("-");
+	            int start = Integer.parseInt(range[0]);
+	            int end = Integer.parseInt(range[1]);
+	            // check if the end page is greater than total pages
+	            if (end > totalPages) {
+	                end = totalPages;
+	            }
+	            // loop through the range of pages
+	            for (int j = start; j <= end; j++) {
+	                // print the current index
+	                newPageOrder.add(j - 1);
+	            }
+	        } else {
+	            // if the element is a single page
+	            newPageOrder.add(Integer.parseInt(element) - 1);
+	        }
+	    }
+
+	    return newPageOrder;
+	}
 }

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

@@ -9,12 +9,6 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
-import java.security.KeyPair;
-import java.security.KeyStore;
-import java.security.PrivateKey;
-import java.security.PublicKey;
-import java.security.cert.Certificate;
-import java.security.cert.X509Certificate;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

src/main/resources/messages_en_GB.properties

@@ -54,14 +54,11 @@ home.pdfOrganiser.title=Organise
 home.pdfOrganiser.desc=Remove/Rearrange pages in any order
 
 home.addImage.title=Add image
-home.addImage.desc=Adds a image onto a set location on the PDF (Work in progress)
+home.addImage.desc=Adds a image onto a set location on the PDF
 
 home.watermark.title=Add Watermark
 home.watermark.desc=Add a custom watermark to your PDF document.
 
-home.remove-watermark.title=Remove Watermark
-home.remove-watermark.desc=Remove watermarks from your PDF document.
-
 home.permissions.title=Change Permissions
 home.permissions.desc=Change the permissions of your PDF document
 
@@ -131,8 +128,8 @@ home.certSign.desc=Signs a PDF with a Certificate/Key (PEM/P12)
 home.pageLayout.title=Multi-Page Layout
 home.pageLayout.desc=Merge multiple pages of a PDF document into a single page
 
-home.scalePages.title=Adjust page-scale
-home.scalePages.desc=Change the size of page contents while maintaining a set page-size
+home.scalePages.title=Adjust page size/scale
+home.scalePages.desc=Change the size/scale of page and/or its contents.
 
 error.pdfPassword=The PDF Document is passworded and either the password was not provided or was incorrect
 

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

@@ -14,7 +14,7 @@ $(document).ready(function() {
 		const files = $('#fileInput-input')[0].files;
 		const formData = new FormData(this);
 		const override = $('#override').val() || '';
-
+		const originalButtonText = $('#submitBtn').text();
 		$('#submitBtn').text('Processing...');
 
 		try {
@@ -24,10 +24,10 @@ $(document).ready(function() {
 				await handleSingleDownload(url, formData);
 			}
 
-			$('#submitBtn').text('Submit');
+			$('#submitBtn').text(originalButtonText);
 		} catch (error) {
 			handleDownloadError(error);
-			$('#submitBtn').text('Submit');
+			$('#submitBtn').text(originalButtonText);
 			console.error(error);
 		}
 	});
@@ -83,7 +83,7 @@ async function handleJsonResponse(response) {
 	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')) {
-		alert('[[#{error.pdfPassword}]]');
+		alert(pdfPasswordPrompt);
 	} else {
 		showErrorBanner(json.error + ':' + json.message, json.trace);
 	}

src/main/resources/templates/fragments/common.html

@@ -91,6 +91,9 @@
 </th:block>
 
 <th:block th:fragment="fileSelector(name, multiple)"  th:with="accept=${accept} ?: '*/*', inputText=${inputText} ?: #{pdfPrompt}, remoteCall=${remoteCall} ?: 'true', notRequired=${notRequired} ?: false">
+    <script th:inline="javascript">
+		const pdfPasswordPrompt =  /*[[#{error.pdfPassword}]]]*/ '';
+	</script>
     <script src="js/downloader.js"></script>
 
     <div class="custom-file-chooser">

src/main/resources/templates/other/auto-crop.html

@@ -0,0 +1,31 @@
+<!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=#{autoCrop.title})}"></th:block>
+
+
+<body>
+    <th:block th:insert="~{fragments/common :: game}"></th:block>
+    <div id="page-container">
+        <div id="content-wrap">
+            <div th:insert="~{fragments/navbar.html :: navbar}"></div>
+            <br> <br>
+            <div class="container">
+                <div class="row justify-content-center">
+                    <div class="col-md-6">
+                        <h2 th:text="#{autoCrop.header}"></h2>
+                        <form method="post" enctype="multipart/form-data" th:action="@{auto-crop}">
+                            <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="#{autoCrop.submit}"></button>
+                        </form>
+                        <p class="mt-3" th:text="#{autoCrop.credit}"></p>
+                    </div>
+                </div>
+            </div>
+
+        </div>
+        <div th:insert="~{fragments/footer.html :: footer}"></div>
+    </div>
+</body>
+</html>