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

@@ -7,7 +7,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.stereotype.Service;
 
-import jakarta.annotation.PostConstruct;
 import stirling.software.SPDF.controller.api.pipeline.UserServiceInterface;
 import stirling.software.SPDF.model.ApplicationProperties;
 import stirling.software.SPDF.model.PdfMetadata;
@@ -15,8 +14,6 @@ import stirling.software.SPDF.model.PdfMetadata;
 @Service
 public class PdfMetadataService {
 
-    private static PdfMetadataService instance;
-
     private final ApplicationProperties applicationProperties;
     private final String appVersion;
     private final UserServiceInterface userService;
@@ -31,33 +28,7 @@ public class PdfMetadataService {
         this.userService = userService;
     }
 
-    @PostConstruct
+    public PdfMetadata extractMetadataFromPdf(PDDocument pdf) {
-    public void init() {
-        instance = this;
-    }
-
-    // Static methods for easy access
-
-    public static PdfMetadata extractMetadataFromPdf(PDDocument pdf) {
-        return instance.extractMetadataFromPdfInstance(pdf);
-    }
-
-    public static void setDefaultMetadata(PDDocument pdf) {
-        instance.setDefaultMetadataInstance(pdf);
-    }
-
-    public static void setMetadataToPdf(PDDocument pdf, PdfMetadata pdfMetadata) {
-        instance.setMetadataToPdfInstance(pdf, pdfMetadata);
-    }
-
-    public static void setMetadataToPdf(
-            PDDocument pdf, PdfMetadata pdfMetadata, boolean newlyCreated) {
-        instance.setMetadataToPdfInstance(pdf, pdfMetadata, newlyCreated);
-    }
-
-    // Instance methods
-
-    private PdfMetadata extractMetadataFromPdfInstance(PDDocument pdf) {
         return PdfMetadata.builder()
                 .author(pdf.getDocumentInformation().getAuthor())
                 .producer(pdf.getDocumentInformation().getProducer())
@@ -70,17 +41,16 @@ public class PdfMetadataService {
                 .build();
     }
 
-    private void setDefaultMetadataInstance(PDDocument pdf) {
+    public void setDefaultMetadata(PDDocument pdf) {
-        PdfMetadata metadata = extractMetadataFromPdfInstance(pdf);
+        PdfMetadata metadata = extractMetadataFromPdf(pdf);
-        setMetadataToPdfInstance(pdf, metadata);
+        setMetadataToPdf(pdf, metadata);
     }
 
-    private void setMetadataToPdfInstance(PDDocument pdf, PdfMetadata pdfMetadata) {
+    public void setMetadataToPdf(PDDocument pdf, PdfMetadata pdfMetadata) {
-        setMetadataToPdfInstance(pdf, pdfMetadata, true);
+        setMetadataToPdf(pdf, pdfMetadata, false);
     }
 
-    private void setMetadataToPdfInstance(
+    public void setMetadataToPdf(PDDocument pdf, PdfMetadata pdfMetadata, boolean newlyCreated) {
-            PDDocument pdf, PdfMetadata pdfMetadata, boolean newlyCreated) {
         if (newlyCreated || pdfMetadata.getCreationDate() == null) {
             setNewDocumentMetadata(pdf, pdfMetadata);
         }
@@ -89,35 +59,35 @@ public class PdfMetadataService {
 
     private void setNewDocumentMetadata(PDDocument pdf, PdfMetadata pdfMetadata) {
 
-        String title = pdfMetadata.getTitle();
         String creator = "Stirling-PDF";
 
-//        if (applicationProperties
+        //        if (applicationProperties
-//                .getEnterpriseEdition()
+        //                .getEnterpriseEdition()
-//                .getCustomMetadata()
+        //                .getCustomMetadata()
-//                .isAutoUpdateMetadata()) {
+        //                .isAutoUpdateMetadata()) {
 
-            // producer =
+        // producer =
-            //
+        //
-            // applicationProperties.getEnterpriseEdition().getCustomMetadata().getProducer();
+        // applicationProperties.getEnterpriseEdition().getCustomMetadata().getProducer();
-            // creator =
+        // creator =
-            // applicationProperties.getEnterpriseEdition().getCustomMetadata().getCreator();
+        // applicationProperties.getEnterpriseEdition().getCustomMetadata().getCreator();
-            // title = applicationProperties.getEnterpriseEdition().getCustomMetadata().getTitle();
+        // title = applicationProperties.getEnterpriseEdition().getCustomMetadata().getTitle();
 
-//            if ("{filename}".equals(title)) {
+        //            if ("{filename}".equals(title)) {
-//                title = "Filename"; // Replace with actual filename logic
+        //                title = "Filename"; // Replace with actual filename logic
-//            } else if ("{unchanged}".equals(title)) {
+        //            } else if ("{unchanged}".equals(title)) {
-//                title = pdfMetadata.getTitle(); // Keep the original title
+        //                title = pdfMetadata.getTitle(); // Keep the original title
-//            }
+        //            }
-//        }
+        //        }
 
-        pdf.getDocumentInformation().setTitle(title);
         pdf.getDocumentInformation().setCreator(creator + " " + appVersion);
         pdf.getDocumentInformation().setCreationDate(Calendar.getInstance());
     }
 
     private void setCommonMetadata(PDDocument pdf, PdfMetadata pdfMetadata) {
         String producer = "Stirling-PDF";
+        String title = pdfMetadata.getTitle();
+        pdf.getDocumentInformation().setTitle(title);
         pdf.getDocumentInformation().setProducer(producer + " " + appVersion);
         pdf.getDocumentInformation().setSubject(pdfMetadata.getSubject());
         pdf.getDocumentInformation().setKeywords(pdfMetadata.getKeywords());

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

@@ -13,6 +13,7 @@ import org.apache.pdfbox.pdmodel.common.PDRectangle;
 import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -23,6 +24,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.CropPdfForm;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -32,6 +34,13 @@ public class CropController {
 
     private static final Logger logger = LoggerFactory.getLogger(CropController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public CropController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/crop", consumes = "multipart/form-data")
     @Operation(
             summary = "Crops a PDF document",
@@ -40,7 +49,8 @@ public class CropController {
     public ResponseEntity<byte[]> cropPdf(@ModelAttribute CropPdfForm form) throws IOException {
         PDDocument sourceDocument = Loader.loadPDF(form.getFileInput().getBytes());
 
-        PDDocument newDocument = new PDDocument();
+        PDDocument newDocument =
+                pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
 
         int totalPages = sourceDocument.getNumberOfPages();
 

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

@@ -22,6 +22,7 @@ import org.apache.pdfbox.pdmodel.interactive.form.PDField;
 import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -33,6 +34,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.MergePdfsRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -43,9 +45,16 @@ public class MergeController {
 
     private static final Logger logger = LoggerFactory.getLogger(MergeController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public MergeController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     // Merges a list of PDDocument objects into a single PDDocument
     public PDDocument mergeDocuments(List<PDDocument> documents) throws IOException {
-        PDDocument mergedDoc = new PDDocument();
+        PDDocument mergedDoc = pdfDocumentFactory.createNewDocument();
         for (PDDocument doc : documents) {
             for (PDPage page : doc.getPages()) {
                 mergedDoc.addPage(page);

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

@@ -14,6 +14,7 @@ import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.apache.pdfbox.util.Matrix;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -26,6 +27,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.MergeMultiplePagesRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -35,6 +37,13 @@ public class MultiPageLayoutController {
 
     private static final Logger logger = LoggerFactory.getLogger(MultiPageLayoutController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public MultiPageLayoutController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/multi-page-layout", consumes = "multipart/form-data")
     @Operation(
             summary = "Merge multiple pages of a PDF document into a single page",
@@ -60,7 +69,8 @@ public class MultiPageLayoutController {
         int rows = pagesPerSheet == 2 || pagesPerSheet == 3 ? 1 : (int) Math.sqrt(pagesPerSheet);
 
         PDDocument sourceDocument = Loader.loadPDF(file.getBytes());
-        PDDocument newDocument = new PDDocument();
+        PDDocument newDocument =
+                pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
         PDPage newPage = new PDPage(PDRectangle.A4);
         newDocument.addPage(newPage);
 

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

@@ -3,16 +3,15 @@ package stirling.software.SPDF.controller.api;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
-import org.springframework.web.multipart.MultipartFile;
 
 import io.swagger.v3.oas.annotations.Operation;
 
 import stirling.software.SPDF.model.api.PDFFile;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.service.PdfImageRemovalService;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -25,15 +24,21 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 public class PdfImageRemovalController {
 
     // Service for removing images from PDFs
-    @Autowired private PdfImageRemovalService pdfImageRemovalService;
+    private final PdfImageRemovalService pdfImageRemovalService;
+
+    private final CustomPDDocumentFactory pdfDocumentFactory;
 
     /**
      * Constructor for dependency injection of PdfImageRemovalService.
      *
      * @param pdfImageRemovalService The service used for removing images from PDFs.
      */
-    public PdfImageRemovalController(PdfImageRemovalService pdfImageRemovalService) {
+    @Autowired
+    public PdfImageRemovalController(
+            PdfImageRemovalService pdfImageRemovalService,
+            CustomPDDocumentFactory pdfDocumentFactory) {
         this.pdfImageRemovalService = pdfImageRemovalService;
+        this.pdfDocumentFactory = pdfDocumentFactory;
     }
 
     /**
@@ -53,14 +58,8 @@ public class PdfImageRemovalController {
             description =
                     "This endpoint remove images from file to reduce the file size.Input:PDF Output:PDF Type:MISO")
     public ResponseEntity<byte[]> removeImages(@ModelAttribute PDFFile file) throws IOException {
-
+        // Load the PDF document
-        MultipartFile pdf = file.getFileInput();
+        PDDocument document = pdfDocumentFactory.load(file);
-
-        // Convert the MultipartFile to a byte array
-        byte[] pdfBytes = pdf.getBytes();
-
-        // Load the PDF document from the byte array
-        PDDocument document = Loader.loadPDF(pdfBytes);
 
         // Remove images from the PDF document using the service
         PDDocument modifiedDocument = pdfImageRemovalService.removeImagesFromPdf(document);
@@ -74,7 +73,8 @@ public class PdfImageRemovalController {
 
         // Generate a new filename for the modified PDF
         String mergedFileName =
-                pdf.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_removed_images.pdf";
+                file.getFileInput().getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                        + "_removed_images.pdf";
 
         // Convert the byte array to a web response and return it
         return WebResponseUtils.bytesToWebResponse(outputStream.toByteArray(), mergedFileName);

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

@@ -12,6 +12,7 @@ import java.util.Map;
 import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.Overlay;
 import org.apache.pdfbox.pdmodel.PDDocument;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -25,6 +26,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.OverlayPdfsRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -33,6 +35,13 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "General", description = "General APIs")
 public class PdfOverlayController {
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public PdfOverlayController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/overlay-pdfs", consumes = "multipart/form-data")
     @Operation(
             summary = "Overlay PDF files in various modes",
@@ -56,7 +65,7 @@ public class PdfOverlayController {
             // "FixedRepeatOverlay"
             int[] counts = request.getCounts(); // Used for FixedRepeatOverlay mode
 
-            try (PDDocument basePdf = Loader.loadPDF(baseFile.getBytes());
+            try (PDDocument basePdf = pdfDocumentFactory.load(baseFile);
                     Overlay overlay = new Overlay()) {
                 Map<Integer, String> overlayGuide =
                         prepareOverlayGuide(

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

@@ -10,6 +10,7 @@ import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -24,6 +25,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 import stirling.software.SPDF.model.SortTypes;
 import stirling.software.SPDF.model.api.PDFWithPageNums;
 import stirling.software.SPDF.model.api.general.RearrangePagesRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -34,6 +36,13 @@ public class RearrangePagesPDFController {
 
     private static final Logger logger = LoggerFactory.getLogger(RearrangePagesPDFController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public RearrangePagesPDFController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/remove-pages")
     @Operation(
             summary = "Remove pages from a PDF file",
@@ -45,7 +54,7 @@ public class RearrangePagesPDFController {
         MultipartFile pdfFile = request.getFileInput();
         String pagesToDelete = request.getPageNumbers();
 
-        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
+        PDDocument document = pdfDocumentFactory.load(pdfFile);
 
         // Split the page order string into an array of page numbers or range of numbers
         String[] pageOrderArr = pagesToDelete.split(",");

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

@@ -2,12 +2,12 @@ package stirling.software.SPDF.controller.api;
 
 import java.io.IOException;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageTree;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -20,6 +20,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.RotatePDFRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -29,6 +30,13 @@ public class RotationController {
 
     private static final Logger logger = LoggerFactory.getLogger(RotationController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public RotationController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/rotate-pdf")
     @Operation(
             summary = "Rotate a PDF file",
@@ -39,7 +47,7 @@ public class RotationController {
         MultipartFile pdfFile = request.getFileInput();
         Integer angle = request.getAngle();
         // Load the PDF document
-        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
+        PDDocument document = pdfDocumentFactory.load(request);
 
         // Get the list of pages in the document
         PDPageTree pages = document.getPages();

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

@@ -15,6 +15,7 @@ import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.apache.pdfbox.util.Matrix;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -27,6 +28,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.ScalePagesRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -36,6 +38,13 @@ public class ScalePagesController {
 
     private static final Logger logger = LoggerFactory.getLogger(ScalePagesController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public ScalePagesController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/scale-pages", consumes = "multipart/form-data")
     @Operation(
             summary = "Change the size of a PDF page/document",
@@ -48,7 +57,8 @@ public class ScalePagesController {
         float scaleFactor = request.getScaleFactor();
 
         PDDocument sourceDocument = Loader.loadPDF(file.getBytes());
-        PDDocument outputDocument = new PDDocument();
+        PDDocument outputDocument =
+                pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
 
         PDRectangle targetSize = getTargetSize(targetPDRectangle, sourceDocument);
 

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

@@ -15,6 +15,7 @@ import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -27,9 +28,8 @@ import io.github.pixee.security.Filenames;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
-import stirling.software.SPDF.config.PdfMetadataService;
-import stirling.software.SPDF.model.PdfMetadata;
 import stirling.software.SPDF.model.api.PDFWithPageNums;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -38,6 +38,12 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 public class SplitPDFController {
 
     private static final Logger logger = LoggerFactory.getLogger(SplitPDFController.class);
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public SplitPDFController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
 
     @PostMapping(consumes = "multipart/form-data", value = "/split-pages")
     @Operation(
@@ -51,7 +57,7 @@ public class SplitPDFController {
         // open the pdf document
 
         PDDocument document = Loader.loadPDF(file.getBytes());
-        PdfMetadata metadata = PdfMetadataService.extractMetadataFromPdf(document);
+        // PdfMetadata metadata = PdfMetadataService.extractMetadataFromPdf(document);
         int totalPages = document.getNumberOfPages();
         List<Integer> pageNumbers = request.getPageNumbersList(document, false);
         System.out.println(
@@ -70,7 +76,8 @@ public class SplitPDFController {
         List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
         int previousPageNumber = 0;
         for (int splitPoint : pageNumbers) {
-            try (PDDocument splitDocument = new PDDocument()) {
+            try (PDDocument splitDocument =
+                    pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document)) {
                 for (int i = previousPageNumber; i <= splitPoint; i++) {
                     PDPage page = document.getPage(i);
                     splitDocument.addPage(page);
@@ -79,7 +86,7 @@ public class SplitPDFController {
                 previousPageNumber = splitPoint + 1;
 
                 // Transfer metadata to split pdf
-                PdfMetadataService.setMetadataToPdf(splitDocument, metadata);
+                // PdfMetadataService.setMetadataToPdf(splitDocument, metadata);
 
                 ByteArrayOutputStream baos = new ByteArrayOutputStream();
                 splitDocument.save(baos);

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

@@ -15,6 +15,7 @@ import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDDocume
 import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineItem;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -44,6 +45,13 @@ public class SplitPdfByChaptersController {
     private static final Logger logger =
             LoggerFactory.getLogger(SplitPdfByChaptersController.class);
 
+    private final PdfMetadataService pdfMetadataService;
+
+    @Autowired
+    public SplitPdfByChaptersController(PdfMetadataService pdfMetadataService) {
+        this.pdfMetadataService = pdfMetadataService;
+    }
+
     @PostMapping(value = "/split-pdf-by-chapters", consumes = "multipart/form-data")
     @Operation(
             summary = "Split PDFs by Chapters",
@@ -258,7 +266,7 @@ public class SplitPdfByChaptersController {
         List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
         PdfMetadata metadata = null;
         if (includeMetadata) {
-            metadata = PdfMetadataService.extractMetadataFromPdf(sourceDocument);
+            metadata = pdfMetadataService.extractMetadataFromPdf(sourceDocument);
         }
         for (Bookmark bookmark : bookmarks) {
             try (PDDocument splitDocument = new PDDocument()) {
@@ -273,7 +281,7 @@ public class SplitPdfByChaptersController {
                 }
                 ByteArrayOutputStream baos = new ByteArrayOutputStream();
                 if (includeMetadata) {
-                    PdfMetadataService.setMetadataToPdf(splitDocument, metadata);
+                    pdfMetadataService.setMetadataToPdf(splitDocument, metadata);
                 }
 
                 splitDocument.save(baos);

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

@@ -20,6 +20,7 @@ import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.apache.pdfbox.util.Matrix;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -33,6 +34,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.SplitPdfBySectionsRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -43,6 +45,13 @@ public class SplitPdfBySectionsController {
     private static final Logger logger =
             LoggerFactory.getLogger(SplitPdfBySectionsController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public SplitPdfBySectionsController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/split-pdf-by-sections", consumes = "multipart/form-data")
     @Operation(
             summary = "Split PDF pages into smaller sections",
@@ -65,7 +74,7 @@ public class SplitPdfBySectionsController {
                 Filenames.toSimpleFileName(file.getOriginalFilename())
                         .replaceFirst("[.][^.]+$", "");
         if (merge) {
-            MergeController mergeController = new MergeController();
+            MergeController mergeController = new MergeController(pdfDocumentFactory);
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
             mergeController.mergeDocuments(splitDocuments).save(baos);
             return WebResponseUtils.bytesToWebResponse(baos.toByteArray(), filename + "_split.pdf");

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

@@ -12,6 +12,7 @@ import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -25,6 +26,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.SplitPdfBySizeOrCountRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -34,6 +36,12 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 public class SplitPdfBySizeController {
 
     private static final Logger logger = LoggerFactory.getLogger(SplitPdfBySizeController.class);
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public SplitPdfBySizeController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
 
     @PostMapping(value = "/split-by-size-or-count", consumes = "multipart/form-data")
     @Operation(
@@ -84,7 +92,8 @@ public class SplitPdfBySizeController {
             PDDocument sourceDocument, long maxBytes, ZipOutputStream zipOut, String baseFilename)
             throws IOException {
         long currentSize = 0;
-        PDDocument currentDoc = new PDDocument();
+        PDDocument currentDoc =
+                pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
         int fileIndex = 1;
 
         for (int pageIndex = 0; pageIndex < sourceDocument.getNumberOfPages(); pageIndex++) {
@@ -121,7 +130,8 @@ public class SplitPdfBySizeController {
             PDDocument sourceDocument, int pageCount, ZipOutputStream zipOut, String baseFilename)
             throws IOException {
         int currentPageCount = 0;
-        PDDocument currentDoc = new PDDocument();
+        PDDocument currentDoc =
+                pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
         int fileIndex = 1;
         for (PDPage page : sourceDocument.getPages()) {
             currentDoc.addPage(page);
@@ -152,7 +162,8 @@ public class SplitPdfBySizeController {
         int currentPageIndex = 0;
         int fileIndex = 1;
         for (int i = 0; i < documentCount; i++) {
-            PDDocument currentDoc = new PDDocument();
+            PDDocument currentDoc =
+                    pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
             int pagesToAdd = pagesPerDocument + (i < extraPages ? 1 : 0);
 
             for (int j = 0; j < pagesToAdd; j++) {

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

@@ -13,6 +13,7 @@ import org.apache.pdfbox.pdmodel.common.PDRectangle;
 import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -23,6 +24,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.PDFFile;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -32,6 +34,13 @@ public class ToSinglePageController {
 
     private static final Logger logger = LoggerFactory.getLogger(ToSinglePageController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public ToSinglePageController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/pdf-to-single-page")
     @Operation(
             summary = "Convert a multi-page PDF into a single long page PDF",
@@ -53,7 +62,8 @@ public class ToSinglePageController {
         }
 
         // Create new document and page with calculated dimensions
-        PDDocument newDocument = new PDDocument();
+        PDDocument newDocument =
+                pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);
         PDPage newPage = new PDPage(new PDRectangle(maxWidth, totalHeight));
         newDocument.addPage(newPage);
 

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

@@ -1,30 +1,36 @@
 package stirling.software.SPDF.controller.api.converters;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
 import io.github.pixee.security.Filenames;
 import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.GeneralFile;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.FileToPdf;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
-@RestController
+// Disabled for now
-@Tag(name = "Convert", description = "Convert APIs")
+// @RestController
-@RequestMapping("/api/v1/convert")
+// @Tag(name = "Convert", description = "Convert APIs")
+// @RequestMapping("/api/v1/convert")
 public class ConvertBookToPDFController {
 
-    @Autowired
+    private final boolean bookAndHtmlFormatsInstalled;
-    @Qualifier("bookAndHtmlFormatsInstalled")
+
-    private boolean bookAndHtmlFormatsInstalled;
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    // @Autowired
+    public ConvertBookToPDFController(
+            CustomPDDocumentFactory pdfDocumentFactory,
+            @Qualifier("bookAndHtmlFormatsInstalled") boolean bookAndHtmlFormatsInstalled) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+        this.bookAndHtmlFormatsInstalled = bookAndHtmlFormatsInstalled;
+    }
 
     @PostMapping(consumes = "multipart/form-data", value = "/book/pdf")
     @Operation(

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

@@ -1,28 +1,25 @@
 package stirling.software.SPDF.controller.api.converters;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
 import io.github.pixee.security.Filenames;
 import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.converters.HTMLToPdfRequest;
 import stirling.software.SPDF.utils.FileToPdf;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
-@RestController
+// Disabled for now
-@Tag(name = "Convert", description = "Convert APIs")
+// @RestController
-@RequestMapping("/api/v1/convert")
+// @Tag(name = "Convert", description = "Convert APIs")
+// @RequestMapping("/api/v1/convert")
 public class ConvertHtmlToPDF {
 
-    @Autowired
+    // @Autowired
     @Qualifier("bookAndHtmlFormatsInstalled")
     private boolean bookAndHtmlFormatsInstalled;
 

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

@@ -16,6 +16,7 @@ import org.apache.commons.io.FileUtils;
 import org.apache.pdfbox.rendering.ImageType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -30,6 +31,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.converters.ConvertToImageRequest;
 import stirling.software.SPDF.model.api.converters.ConvertToPdfRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.CheckProgramInstall;
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.ProcessExecutor;
@@ -43,6 +45,13 @@ public class ConvertImgPDFController {
 
     private static final Logger logger = LoggerFactory.getLogger(ConvertImgPDFController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public ConvertImgPDFController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/pdf/img")
     @Operation(
             summary = "Convert PDF to image(s)",
@@ -178,7 +187,8 @@ public class ConvertImgPDFController {
         boolean autoRotate = request.isAutoRotate();
 
         // Convert the file to PDF and get the resulting bytes
-        byte[] bytes = PdfUtils.imageToPdf(file, fitOption, autoRotate, colorType);
+        byte[] bytes =
+                PdfUtils.imageToPdf(file, fitOption, autoRotate, colorType, pdfDocumentFactory);
         return WebResponseUtils.bytesToWebResponse(
                 bytes,
                 file[0].getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_converted.pdf");

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

@@ -10,29 +10,26 @@ import org.commonmark.node.Node;
 import org.commonmark.parser.Parser;
 import org.commonmark.renderer.html.AttributeProvider;
 import org.commonmark.renderer.html.HtmlRenderer;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
-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.Filenames;
 import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.GeneralFile;
 import stirling.software.SPDF.utils.FileToPdf;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
-@RestController
+// Disabled for now
-@Tag(name = "Convert", description = "Convert APIs")
+// @RestController
-@RequestMapping("/api/v1/convert")
+// @Tag(name = "Convert", description = "Convert APIs")
+// @RequestMapping("/api/v1/convert")
 public class ConvertMarkdownToPdf {
 
-    @Autowired
+    // @Autowired
     @Qualifier("bookAndHtmlFormatsInstalled")
     private boolean bookAndHtmlFormatsInstalled;
 

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

@@ -1,5 +1,6 @@
 package stirling.software.SPDF.controller.api.converters;
 
+import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -8,6 +9,8 @@ import java.util.Arrays;
 import java.util.List;
 
 import org.apache.commons.io.FilenameUtils;
+import org.apache.pdfbox.pdmodel.PDDocument;
+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;
@@ -20,6 +23,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.GeneralFile;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
 import stirling.software.SPDF.utils.WebResponseUtils;
@@ -29,7 +33,7 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertOfficeController {
 
-    public byte[] convertToPdf(MultipartFile inputFile) throws IOException, InterruptedException {
+    public File convertToPdf(MultipartFile inputFile) throws IOException, InterruptedException {
         // Check for valid file extension
         String originalFilename = Filenames.toSimpleFileName(inputFile.getOriginalFilename());
         if (originalFilename == null
@@ -62,12 +66,10 @@ public class ConvertOfficeController {
                             .runCommandWithOutputHandling(command);
 
             // Read the converted PDF file
-            byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
+            return tempOutputFile.toFile();
-            return pdfBytes;
         } finally {
             // Clean up the temporary files
             if (tempInputFile != null) Files.deleteIfExists(tempInputFile);
-            Files.deleteIfExists(tempOutputFile);
         }
     }
 
@@ -76,6 +78,13 @@ public class ConvertOfficeController {
         return fileExtension.matches(extensionPattern);
     }
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public ConvertOfficeController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/file/pdf")
     @Operation(
             summary = "Convert a file to a PDF using LibreOffice",
@@ -86,12 +95,18 @@ public class ConvertOfficeController {
         MultipartFile inputFile = request.getFileInput();
         // unused but can start server instance if startup time is to long
         // LibreOfficeListener.getInstance().start();
+        File file = null;
+        try {
+            file = convertToPdf(inputFile);
 
-        byte[] pdfByteArray = convertToPdf(inputFile);
+            PDDocument doc = pdfDocumentFactory.load(file);
-        return WebResponseUtils.bytesToWebResponse(
+            return WebResponseUtils.pdfDocToWebResponse(
-                pdfByteArray,
+                    doc,
-                Filenames.toSimpleFileName(inputFile.getOriginalFilename())
+                    Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-                                .replaceFirst("[.][^.]+$", "")
+                                    .replaceFirst("[.][^.]+$", "")
-                        + "_convertedToPDF.pdf");
+                            + "_convertedToPDF.pdf");
+        } finally {
+            if (file != null) file.delete();
+        }
     }
 }

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

@@ -6,30 +6,27 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
 import io.github.pixee.security.Filenames;
 import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.converters.PdfToBookRequest;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
-@RestController
+// Disabled for now
-@Tag(name = "Convert", description = "Convert APIs")
+// @RestController
-@RequestMapping("/api/v1/convert")
+// @Tag(name = "Convert", description = "Convert APIs")
+// @RequestMapping("/api/v1/convert")
 public class ConvertPDFToBookController {
 
-    @Autowired
+    // @Autowired
     @Qualifier("bookAndHtmlFormatsInstalled")
     private boolean bookAndHtmlFormatsInstalled;
 

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

@@ -9,7 +9,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
 import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
@@ -17,6 +16,7 @@ import org.apache.pdfbox.pdmodel.interactive.form.PDField;
 import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -29,6 +29,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.converters.PdfToPdfARequest;
+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;
@@ -40,6 +41,13 @@ public class ConvertPDFToPDFA {
 
     private static final Logger logger = LoggerFactory.getLogger(ConvertPDFToPDFA.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public ConvertPDFToPDFA(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/pdf/pdfa")
     @Operation(
             summary = "Convert a PDF to a PDF/A",
@@ -54,7 +62,7 @@ public class ConvertPDFToPDFA {
         byte[] pdfBytes = inputFile.getBytes();
 
         // Load the PDF document
-        PDDocument document = Loader.loadPDF(pdfBytes);
+        PDDocument document = pdfDocumentFactory.load(pdfBytes);
 
         // Get the document catalog
         PDDocumentCatalog catalog = document.getDocumentCatalog();
@@ -101,18 +109,18 @@ public class ConvertPDFToPDFA {
                 ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
                         .runCommandWithOutputHandling(command);
 
-        // Read the optimized PDF file
+        try {
-        byte[] optimizedPdfBytes = Files.readAllBytes(tempOutputFile);
+            PDDocument doc = pdfDocumentFactory.load(tempOutputFile.toFile());
-
+            // Return the optimized PDF as a response
-        // Clean up the temporary files
+            String outputFilename =
-        Files.deleteIfExists(tempInputFile);
+                    Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-        Files.deleteIfExists(tempOutputFile);
+                                    .replaceFirst("[.][^.]+$", "")
-
+                            + "_PDFA.pdf";
-        // Return the optimized PDF as a response
+            return WebResponseUtils.pdfDocToWebResponse(doc, outputFilename);
-        String outputFilename =
+        } finally {
-                Filenames.toSimpleFileName(inputFile.getOriginalFilename())
+            // Clean up the temporary files
-                                .replaceFirst("[.][^.]+$", "")
+            Files.deleteIfExists(tempInputFile);
-                        + "_PDFA.pdf";
+            Files.deleteIfExists(tempOutputFile);
-        return WebResponseUtils.bytesToWebResponse(optimizedPdfBytes, outputFilename);
+        }
     }
 }

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

@@ -6,6 +6,10 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+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;
@@ -16,6 +20,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.converters.UrlToPdfRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
@@ -26,6 +31,15 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertWebsiteToPDF {
 
+    private static final Logger logger = LoggerFactory.getLogger(ConvertWebsiteToPDF.class);
+
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public ConvertWebsiteToPDF(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/url/pdf")
     @Operation(
             summary = "Convert a URL to a PDF",
@@ -46,12 +60,12 @@ public class ConvertWebsiteToPDF {
         }
 
         Path tempOutputFile = null;
-        byte[] pdfBytes;
+        PDDocument doc = null;
         try {
             // Prepare the output file path
             tempOutputFile = Files.createTempFile("output_", ".pdf");
 
-            // Prepare the OCRmyPDF command
+            // Prepare the WeasyPrint command
             List<String> command = new ArrayList<>();
             command.add("weasyprint");
             command.add(URL);
@@ -61,16 +75,23 @@ public class ConvertWebsiteToPDF {
                     ProcessExecutor.getInstance(ProcessExecutor.Processes.WEASYPRINT)
                             .runCommandWithOutputHandling(command);
 
-            // Read the optimized PDF file
+            // Load the PDF using pdfDocumentFactory
-            pdfBytes = Files.readAllBytes(tempOutputFile);
+            doc = pdfDocumentFactory.load(tempOutputFile.toFile());
-        } finally {
-            // Clean up the temporary files
-            Files.deleteIfExists(tempOutputFile);
-        }
-        // Convert URL to a safe filename
-        String outputFilename = convertURLToFileName(URL);
 
-        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+            // Convert URL to a safe filename
+            String outputFilename = convertURLToFileName(URL);
+
+            return WebResponseUtils.pdfDocToWebResponse(doc, outputFilename);
+        } finally {
+
+            if (tempOutputFile != null) {
+                try {
+                    Files.deleteIfExists(tempOutputFile);
+                } catch (IOException e) {
+                    logger.error("Error deleting temporary output file", e);
+                }
+            }
+        }
     }
 
     private String convertURLToFileName(String url) {

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

@@ -30,13 +30,13 @@ import stirling.software.SPDF.model.api.extract.PDFFilePage;
 @RestController
 @RequestMapping("/api/v1/convert")
 @Tag(name = "Convert", description = "Convert APIs")
-public class ExtractController {
+public class ExtractCSVController {
 
     private static final Logger logger = LoggerFactory.getLogger(CropController.class);
 
     @PostMapping(value = "/pdf/csv", consumes = "multipart/form-data")
     @Operation(
-            summary = "Extracts a PDF document to csv",
+            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 {

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

@@ -12,11 +12,11 @@ import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.rendering.PDFRenderer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -38,6 +38,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.misc.AutoSplitPdfRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -49,6 +50,13 @@ public class AutoSplitPdfController {
     private static final String QR_CONTENT = "https://github.com/Stirling-Tools/Stirling-PDF";
     private static final String QR_CONTENT_OLD = "https://github.com/Frooodle/Stirling-PDF";
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public AutoSplitPdfController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/auto-split-pdf", consumes = "multipart/form-data")
     @Operation(
             summary = "Auto split PDF pages into separate documents",
@@ -59,73 +67,93 @@ public class AutoSplitPdfController {
         MultipartFile file = request.getFileInput();
         boolean duplexMode = request.isDuplexMode();
 
-        PDDocument document = Loader.loadPDF(file.getBytes());
+        PDDocument document = null;
-        PDFRenderer pdfRenderer = new PDFRenderer(document);
-        pdfRenderer.setSubsamplingAllowed(true);
         List<PDDocument> splitDocuments = new ArrayList<>();
-        List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
+        Path zipFile = null;
+        byte[] data = null;
 
-        for (int page = 0; page < document.getNumberOfPages(); ++page) {
+        try {
-            BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 150);
+            document = pdfDocumentFactory.load(file.getInputStream());
-            String result = decodeQRCode(bim);
+            PDFRenderer pdfRenderer = new PDFRenderer(document);
-            if ((QR_CONTENT.equals(result) || QR_CONTENT_OLD.equals(result)) && page != 0) {
+            pdfRenderer.setSubsamplingAllowed(true);
-                splitDocuments.add(new PDDocument());
+
+            for (int page = 0; page < document.getNumberOfPages(); ++page) {
+                BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 150);
+                String result = decodeQRCode(bim);
+                if ((QR_CONTENT.equals(result) || QR_CONTENT_OLD.equals(result)) && page != 0) {
+                    splitDocuments.add(new PDDocument());
+                }
+
+                if (!splitDocuments.isEmpty()
+                        && !QR_CONTENT.equals(result)
+                        && !QR_CONTENT_OLD.equals(result)) {
+                    splitDocuments.get(splitDocuments.size() - 1).addPage(document.getPage(page));
+                } else if (page == 0) {
+                    PDDocument firstDocument = new PDDocument();
+                    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) || QR_CONTENT_OLD.equals(result))) {
+                    page++;
+                }
             }
 
-            if (!splitDocuments.isEmpty()
+            // Remove split documents that have no pages
-                    && !QR_CONTENT.equals(result)
+            splitDocuments.removeIf(pdDocument -> pdDocument.getNumberOfPages() == 0);
-                    && !QR_CONTENT_OLD.equals(result)) {
+
-                splitDocuments.get(splitDocuments.size() - 1).addPage(document.getPage(page));
+            zipFile = Files.createTempFile("split_documents", ".zip");
-            } else if (page == 0) {
+            String filename =
-                PDDocument firstDocument = new PDDocument();
+                    Filenames.toSimpleFileName(file.getOriginalFilename())
-                firstDocument.addPage(document.getPage(page));
+                            .replaceFirst("[.][^.]+$", "");
-                splitDocuments.add(firstDocument);
+
+            try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipFile))) {
+                for (int i = 0; i < splitDocuments.size(); i++) {
+                    String fileName = filename + "_" + (i + 1) + ".pdf";
+                    PDDocument splitDocument = splitDocuments.get(i);
+
+                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                    splitDocument.save(baos);
+                    byte[] pdf = baos.toByteArray();
+
+                    ZipEntry pdfEntry = new ZipEntry(fileName);
+                    zipOut.putNextEntry(pdfEntry);
+                    zipOut.write(pdf);
+                    zipOut.closeEntry();
+                }
             }
 
-            // If duplexMode is true and current page is a divider, then skip next page
-            if (duplexMode && (QR_CONTENT.equals(result) || QR_CONTENT_OLD.equals(result))) {
-                page++;
-            }
-        }
-
-        // Remove split documents that have no pages
-        splitDocuments.removeIf(pdDocument -> pdDocument.getNumberOfPages() == 0);
-
-        for (PDDocument splitDocument : splitDocuments) {
-            ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            splitDocument.save(baos);
-            splitDocumentsBoas.add(baos);
-            splitDocument.close();
-        }
-
-        document.close();
-
-        Path zipFile = Files.createTempFile("split_documents", ".zip");
-        String filename =
-                Filenames.toSimpleFileName(file.getOriginalFilename())
-                        .replaceFirst("[.][^.]+$", "");
-        byte[] data;
-
-        try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipFile))) {
-            for (int i = 0; i < splitDocumentsBoas.size(); i++) {
-                String fileName = filename + "_" + (i + 1) + ".pdf";
-                ByteArrayOutputStream baos = splitDocumentsBoas.get(i);
-                byte[] pdf = baos.toByteArray();
-
-                ZipEntry pdfEntry = new ZipEntry(fileName);
-                zipOut.putNextEntry(pdfEntry);
-                zipOut.write(pdf);
-                zipOut.closeEntry();
-            }
-        } catch (Exception e) {
-            logger.error("exception", e);
-        } finally {
             data = Files.readAllBytes(zipFile);
-            Files.deleteIfExists(zipFile);
-        }
 
-        return WebResponseUtils.bytesToWebResponse(
+            return WebResponseUtils.bytesToWebResponse(
-                data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
+                    data, filename + ".zip", MediaType.APPLICATION_OCTET_STREAM);
+        } finally {
+            // Clean up resources
+            if (document != null) {
+                try {
+                    document.close();
+                } catch (IOException e) {
+                    logger.error("Error closing main PDDocument", e);
+                }
+            }
+
+            for (PDDocument splitDoc : splitDocuments) {
+                try {
+                    splitDoc.close();
+                } catch (IOException e) {
+                    logger.error("Error closing split PDDocument", e);
+                }
+            }
+
+            if (zipFile != null) {
+                try {
+                    Files.deleteIfExists(zipFile);
+                } catch (IOException e) {
+                    logger.error("Error deleting temporary zip file", e);
+                }
+            }
+        }
     }
 
     private static String decodeQRCode(BufferedImage bufferedImage) {

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

@@ -16,6 +16,7 @@ import org.apache.pdfbox.rendering.PDFRenderer;
 import org.apache.pdfbox.text.PDFTextStripper;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -30,6 +31,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.misc.RemoveBlankPagesRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -40,6 +42,13 @@ public class BlankPageController {
 
     private static final Logger logger = LoggerFactory.getLogger(BlankPageController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public BlankPageController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/remove-blanks")
     @Operation(
             summary = "Remove blank pages from a PDF file",
@@ -124,7 +133,7 @@ public class BlankPageController {
 
     public void createZipEntry(ZipOutputStream zos, List<PDPage> pages, String entryName)
             throws IOException {
-        try (PDDocument document = new PDDocument()) {
+        try (PDDocument document = pdfDocumentFactory.createNewDocument()) {
 
             for (PDPage page : pages) {
                 document.addPage(page);

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

@@ -20,6 +20,7 @@ import org.apache.pdfbox.pdmodel.graphics.PDXObject;
 import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -32,6 +33,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.misc.OptimizePdfRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
@@ -44,6 +46,13 @@ public class CompressController {
 
     private static final Logger logger = LoggerFactory.getLogger(CompressController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public CompressController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/compress-pdf")
     @Operation(
             summary = "Optimize PDF file",
@@ -258,7 +267,7 @@ public class CompressController {
             }
             // 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
@@ -266,14 +275,15 @@ public class CompressController {
                         "Optimized file is larger than the original. Returning the original file instead.");
 
                 // Read the original file again
-                pdfBytes = Files.readAllBytes(tempInputFile);
+                finalFile = tempInputFile;
             }
             // Return the optimized PDF as a response
             String outputFilename =
                     Filenames.toSimpleFileName(inputFile.getOriginalFilename())
                                     .replaceFirst("[.][^.]+$", "")
                             + "_Optimized.pdf";
-            return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+            return WebResponseUtils.pdfDocToWebResponse(
+                    pdfDocumentFactory.load(finalFile.toFile()), outputFilename);
 
         } finally {
             // Clean up the temporary files

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

@@ -14,6 +14,7 @@ import org.apache.pdfbox.rendering.ImageType;
 import org.apache.pdfbox.rendering.PDFRenderer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -25,9 +26,8 @@ import io.github.pixee.security.Filenames;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
-import stirling.software.SPDF.config.PdfMetadataService;
-import stirling.software.SPDF.model.PdfMetadata;
 import stirling.software.SPDF.model.api.misc.FlattenRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -37,6 +37,13 @@ public class FlattenController {
 
     private static final Logger logger = LoggerFactory.getLogger(FlattenController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public FlattenController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/flatten")
     @Operation(
             summary = "Flatten PDF form fields or full page",
@@ -46,7 +53,6 @@ public class FlattenController {
         MultipartFile file = request.getFileInput();
 
         PDDocument document = Loader.loadPDF(file.getBytes());
-        PdfMetadata metadata = PdfMetadataService.extractMetadataFromPdf(document);
         Boolean flattenOnlyForms = request.getFlattenOnlyForms();
 
         if (Boolean.TRUE.equals(flattenOnlyForms)) {
@@ -60,7 +66,8 @@ public class FlattenController {
             // flatten whole page aka convert each page to image and readd it (making text
             // unselectable)
             PDFRenderer pdfRenderer = new PDFRenderer(document);
-            PDDocument newDocument = new PDDocument();
+            PDDocument newDocument =
+                    pdfDocumentFactory.createNewDocumentBasedOnOldDocument(document);
             int numPages = document.getNumberOfPages();
             for (int i = 0; i < numPages; i++) {
                 try {
@@ -80,7 +87,6 @@ public class FlattenController {
                     logger.error("exception", e);
                 }
             }
-            PdfMetadataService.setMetadataToPdf(newDocument, metadata);
             return WebResponseUtils.pdfDocToWebResponse(
                     newDocument, Filenames.toSimpleFileName(file.getOriginalFilename()));
         }

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

@@ -1,5 +1,6 @@
 package stirling.software.SPDF.controller.api.misc;
 
+import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -28,6 +29,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 
 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;
@@ -52,6 +54,13 @@ 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",
@@ -175,7 +184,7 @@ public class OCRController {
                 tempOutputFile = tempPdfWithoutImages;
             }
             // Read the OCR processed PDF file
-            byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
+            byte[] pdfBytes = pdfDocumentFactory.loadToBytes(tempOutputFile.toFile());
 
             // Return the OCR processed PDF as a response
             String outputFilename =
@@ -196,7 +205,13 @@ public class OCRController {
                     // Add PDF file to the zip
                     ZipEntry pdfEntry = new ZipEntry(outputFilename);
                     zipOut.putNextEntry(pdfEntry);
-                    Files.copy(tempOutputFile, zipOut);
+                    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

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

@@ -4,6 +4,7 @@ import java.io.IOException;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -17,6 +18,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.misc.OverlayImageRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -27,6 +29,13 @@ public class OverlayImageController {
 
     private static final Logger logger = LoggerFactory.getLogger(OverlayImageController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public OverlayImageController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/add-image")
     @Operation(
             summary = "Overlay image onto a PDF file",
@@ -41,7 +50,9 @@ public class OverlayImageController {
         try {
             byte[] pdfBytes = pdfFile.getBytes();
             byte[] imageBytes = imageFile.getBytes();
-            byte[] result = PdfUtils.overlayImage(pdfBytes, imageBytes, x, y, everyPage);
+            byte[] result =
+                    PdfUtils.overlayImage(
+                            pdfDocumentFactory, pdfBytes, imageBytes, x, y, everyPage);
 
             return WebResponseUtils.bytesToWebResponse(
                     result,

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

@@ -4,7 +4,6 @@ import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.List;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
@@ -13,6 +12,7 @@ import org.apache.pdfbox.pdmodel.font.PDType1Font;
 import org.apache.pdfbox.pdmodel.font.Standard14Fonts;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -26,6 +26,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.misc.AddPageNumbersRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.GeneralUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -36,6 +37,13 @@ public class PageNumbersController {
 
     private static final Logger logger = LoggerFactory.getLogger(PageNumbersController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public PageNumbersController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/add-page-numbers", consumes = "multipart/form-data")
     @Operation(
             summary = "Add page numbers to a PDF document",
@@ -52,7 +60,7 @@ public class PageNumbersController {
         String customText = request.getCustomText();
         int pageNumber = startingNumber;
         byte[] fileBytes = file.getBytes();
-        PDDocument document = Loader.loadPDF(fileBytes);
+        PDDocument document = pdfDocumentFactory.load(fileBytes);
         float font_size = request.getFontSize();
         String font_type = request.getFontType();
         float marginFactor;

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

@@ -8,6 +8,7 @@ import java.util.List;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -20,6 +21,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.PDFFile;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.ProcessExecutor;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
 import stirling.software.SPDF.utils.WebResponseUtils;
@@ -31,6 +33,13 @@ public class RepairController {
 
     private static final Logger logger = LoggerFactory.getLogger(RepairController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public RepairController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/repair")
     @Operation(
             summary = "Repair a PDF file",
@@ -58,7 +67,7 @@ public class RepairController {
                             .runCommandWithOutputHandling(command);
 
             // Read the optimized PDF file
-            pdfBytes = Files.readAllBytes(tempOutputFile);
+            pdfBytes = pdfDocumentFactory.loadToBytes(tempOutputFile.toFile());
 
             // Return the optimized PDF as a response
             String outputFilename =

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

@@ -12,7 +12,6 @@ import java.util.List;
 import javax.imageio.ImageIO;
 
 import org.apache.commons.io.IOUtils;
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
@@ -25,6 +24,7 @@ import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
 import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
 import org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState;
 import org.apache.pdfbox.util.Matrix;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -38,6 +38,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.misc.AddStampRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -45,6 +46,13 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Misc", description = "Miscellaneous APIs")
 public class StampController {
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public StampController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/add-stamp")
     @Operation(
             summary = "Add stamp to a PDF file",
@@ -86,7 +94,7 @@ public class StampController {
         }
 
         // Load the input PDF
-        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
+        PDDocument document = pdfDocumentFactory.load(pdfFile);
 
         List<Integer> pageNumbers = request.getPageNumbersList(document, true);
 

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

@@ -16,7 +16,6 @@ import java.security.cert.CertificateException;
 import java.security.cert.CertificateFactory;
 import java.util.Calendar;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.examples.signature.CreateSignatureBase;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature;
@@ -35,6 +34,7 @@ import org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo;
 import org.bouncycastle.pkcs.PKCSException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -47,6 +47,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.security.SignPDFWithCertRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -71,6 +72,13 @@ public class CertSignController {
         }
     }
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public CertSignController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/cert-sign")
     @Operation(
             summary = "Sign PDF with a Digital Certificate",
@@ -122,7 +130,7 @@ public class CertSignController {
 
         CreateSignature createSignature = new CreateSignature(ks, password.toCharArray());
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        sign(pdf.getBytes(), baos, createSignature, name, location, reason);
+        sign(pdfDocumentFactory, pdf.getBytes(), baos, createSignature, name, location, reason);
         return WebResponseUtils.boasToWebResponse(
                 baos,
                 Filenames.toSimpleFileName(pdf.getOriginalFilename()).replaceFirst("[.][^.]+$", "")
@@ -130,13 +138,14 @@ public class CertSignController {
     }
 
     private static void sign(
+            CustomPDDocumentFactory pdfDocumentFactory,
             byte[] input,
             OutputStream output,
             CreateSignature instance,
             String name,
             String location,
             String reason) {
-        try (PDDocument doc = Loader.loadPDF(input)) {
+        try (PDDocument doc = pdfDocumentFactory.load(input)) {
             PDSignature signature = new PDSignature();
             signature.setFilter(PDSignature.FILTER_ADOBE_PPKLITE);
             signature.setSubFilter(PDSignature.SUBFILTER_ADBE_PKCS7_DETACHED);

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

@@ -2,12 +2,12 @@ package stirling.software.SPDF.controller.api.security;
 
 import java.io.IOException;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.encryption.AccessPermission;
 import org.apache.pdfbox.pdmodel.encryption.StandardProtectionPolicy;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -21,6 +21,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.security.AddPasswordRequest;
 import stirling.software.SPDF.model.api.security.PDFPasswordRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -30,6 +31,13 @@ public class PasswordController {
 
     private static final Logger logger = LoggerFactory.getLogger(PasswordController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public PasswordController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/remove-password")
     @Operation(
             summary = "Remove password from a PDF file",
@@ -39,8 +47,7 @@ public class PasswordController {
             throws IOException {
         MultipartFile fileInput = request.getFileInput();
         String password = request.getPassword();
-
+        PDDocument document = pdfDocumentFactory.load(fileInput, password);
-        PDDocument document = Loader.loadPDF(fileInput.getBytes(), password);
         document.setAllSecurityToBeRemoved(true);
         return WebResponseUtils.pdfDocToWebResponse(
                 document,
@@ -69,7 +76,7 @@ public class PasswordController {
         boolean canPrint = request.isCanPrint();
         boolean canPrintFaithful = request.isCanPrintFaithful();
 
-        PDDocument document = Loader.loadPDF(fileInput.getBytes());
+        PDDocument document = pdfDocumentFactory.load(fileInput);
         AccessPermission ap = new AccessPermission();
         ap.setCanAssembleDocument(!canAssembleDocument);
         ap.setCanExtractContent(!canExtractContent);

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

@@ -5,12 +5,12 @@ import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.List;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
 import org.apache.pdfbox.pdmodel.common.PDRectangle;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -25,6 +25,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 import stirling.software.SPDF.model.PDFText;
 import stirling.software.SPDF.model.api.security.RedactPdfRequest;
 import stirling.software.SPDF.pdf.TextFinder;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -35,6 +36,13 @@ public class RedactController {
 
     private static final Logger logger = LoggerFactory.getLogger(RedactController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public RedactController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(value = "/auto-redact", consumes = "multipart/form-data")
     @Operation(
             summary = "Redacts listOfText in a PDF document",
@@ -52,8 +60,7 @@ public class RedactController {
 
         System.out.println(listOfTextString);
         String[] listOfText = listOfTextString.split("\n");
-        byte[] bytes = file.getBytes();
+        PDDocument document = pdfDocumentFactory.load(file);
-        PDDocument document = Loader.loadPDF(bytes);
 
         Color redactColor;
         try {

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

@@ -1,10 +1,8 @@
 package stirling.software.SPDF.controller.api.security;
 
-import java.io.ByteArrayOutputStream;
 import java.util.List;
 import java.util.stream.Collectors;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
 import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
@@ -12,6 +10,7 @@ import org.apache.pdfbox.pdmodel.interactive.form.PDField;
 import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+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;
@@ -24,6 +23,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.PDFFile;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -33,6 +33,13 @@ public class RemoveCertSignController {
 
     private static final Logger logger = LoggerFactory.getLogger(RemoveCertSignController.class);
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public RemoveCertSignController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/remove-cert-sign")
     @Operation(
             summary = "Remove digital signature from PDF",
@@ -42,14 +49,8 @@ public class RemoveCertSignController {
             throws Exception {
         MultipartFile pdf = request.getFileInput();
 
-        // Convert MultipartFile to byte[]
-        byte[] pdfBytes = pdf.getBytes();
-
-        // Create a ByteArrayOutputStream to hold the resulting PDF
-        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-
         // Load the PDF document
-        PDDocument document = Loader.loadPDF(pdfBytes);
+        PDDocument document = pdfDocumentFactory.load(pdf);
 
         // Get the document catalog
         PDDocumentCatalog catalog = document.getDocumentCatalog();
@@ -67,14 +68,9 @@ public class RemoveCertSignController {
                 acroForm.flatten(fieldsToRemove, false);
             }
         }
-
-        // Save the modified document to the ByteArrayOutputStream
-        document.save(baos);
-        document.close();
-
         // Return the modified PDF as a response
-        return WebResponseUtils.boasToWebResponse(
+        return WebResponseUtils.pdfDocToWebResponse(
-                baos,
+                document,
                 Filenames.toSimpleFileName(pdf.getOriginalFilename()).replaceFirst("[.][^.]+$", "")
                         + "_unsigned.pdf");
     }

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

@@ -2,7 +2,6 @@ package stirling.software.SPDF.controller.api.security;
 
 import java.io.IOException;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.cos.COSDictionary;
 import org.apache.pdfbox.cos.COSName;
 import org.apache.pdfbox.pdmodel.PDDocument;
@@ -21,6 +20,7 @@ import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationLink;
 import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
 import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
 import org.apache.pdfbox.pdmodel.interactive.form.PDField;
+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;
@@ -33,6 +33,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.security.SanitizePdfRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -40,6 +41,13 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Security", description = "Security APIs")
 public class SanitizeController {
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public SanitizeController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/sanitize-pdf")
     @Operation(
             summary = "Sanitize a PDF file",
@@ -54,7 +62,7 @@ public class SanitizeController {
         boolean removeLinks = request.isRemoveLinks();
         boolean removeFonts = request.isRemoveFonts();
 
-        PDDocument document = Loader.loadPDF(inputFile.getBytes());
+        PDDocument document = pdfDocumentFactory.load(inputFile);
         if (removeJavaScript) {
             sanitizeJavaScript(document);
         }

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

@@ -11,7 +11,6 @@ import java.nio.file.Files;
 import javax.imageio.ImageIO;
 
 import org.apache.commons.io.IOUtils;
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
@@ -23,6 +22,7 @@ import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
 import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
 import org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState;
 import org.apache.pdfbox.util.Matrix;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -36,6 +36,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.security.AddWatermarkRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
@@ -44,6 +45,13 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Security", description = "Security APIs")
 public class WatermarkController {
 
+    private final CustomPDDocumentFactory pdfDocumentFactory;
+
+    @Autowired
+    public WatermarkController(CustomPDDocumentFactory pdfDocumentFactory) {
+        this.pdfDocumentFactory = pdfDocumentFactory;
+    }
+
     @PostMapping(consumes = "multipart/form-data", value = "/add-watermark")
     @Operation(
             summary = "Add watermark to a PDF file",
@@ -64,7 +72,7 @@ public class WatermarkController {
         boolean convertPdfToImage = request.isConvertPDFToImage();
 
         // Load the input PDF
-        PDDocument document = Loader.loadPDF(pdfFile.getBytes());
+        PDDocument document = pdfDocumentFactory.load(pdfFile);
 
         // Create a page in the document
         for (PDPage page : document.getPages()) {

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

@@ -0,0 +1,100 @@
+package stirling.software.SPDF.service;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.apache.pdfbox.Loader;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.web.multipart.MultipartFile;
+
+import stirling.software.SPDF.config.PdfMetadataService;
+import stirling.software.SPDF.model.PdfMetadata;
+import stirling.software.SPDF.model.api.PDFFile;
+
+@Component
+public class CustomPDDocumentFactory {
+
+    private final PdfMetadataService pdfMetadataService;
+
+    @Autowired
+    public CustomPDDocumentFactory(PdfMetadataService pdfMetadataService) {
+        this.pdfMetadataService = pdfMetadataService;
+    }
+
+    public PDDocument createNewDocument() throws IOException {
+        PDDocument document = new PDDocument();
+        pdfMetadataService.setMetadataToPdf(document, PdfMetadata.builder().build(), true);
+        return document;
+    }
+
+    public PDDocument createNewDocumentBasedOnOldDocument(PDDocument oldDocument)
+            throws IOException {
+        PDDocument document = new PDDocument();
+        pdfMetadataService.setMetadataToPdf(
+                document, pdfMetadataService.extractMetadataFromPdf(oldDocument), true);
+        return document;
+    }
+
+    public byte[] loadToBytes(File file) throws IOException {
+        PDDocument document = load(file);
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        document.save(baos);
+        // Close the document
+        document.close();
+        return baos.toByteArray();
+    }
+
+    public byte[] loadToBytes(byte[] bytes) throws IOException {
+        PDDocument document = load(bytes);
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        document.save(baos);
+        // Close the document
+        document.close();
+        return baos.toByteArray();
+    }
+
+    // if loading from a file, assume the file has been made with Stirling-PDF
+    public PDDocument load(File file) throws IOException {
+        PDDocument document = Loader.loadPDF(file);
+        pdfMetadataService.setMetadataToPdf(document, PdfMetadata.builder().build(), true);
+        return document;
+    }
+
+    public PDDocument load(InputStream input) throws IOException {
+        return load(input.readAllBytes());
+    }
+
+    public PDDocument load(byte[] input) throws IOException {
+        PDDocument document = Loader.loadPDF(input);
+        pdfMetadataService.setDefaultMetadata(document);
+        return document;
+    }
+
+    public PDDocument load(PDFFile pdfFile) throws IOException {
+        return load(pdfFile.getFileInput());
+    }
+
+    public PDDocument load(MultipartFile pdfFile) throws IOException {
+        return load(pdfFile.getBytes());
+    }
+
+    public PDDocument load(String path) throws IOException {
+        return load(new File(path));
+    }
+
+    public PDDocument load(MultipartFile fileInput, String password) throws IOException {
+        return load(fileInput.getBytes(), password);
+    }
+
+    private PDDocument load(byte[] bytes, String password) throws IOException {
+        PDDocument document = Loader.loadPDF(bytes, password);
+        pdfMetadataService.setDefaultMetadata(document);
+        return document;
+    }
+
+    // Add other load methods as needed, following the same pattern
+}

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

@@ -36,6 +36,8 @@ import org.springframework.web.multipart.MultipartFile;
 
 import io.github.pixee.security.Filenames;
 
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
+
 public class PdfUtils {
 
     private static final Logger logger = LoggerFactory.getLogger(PdfUtils.class);
@@ -380,9 +382,13 @@ public class PdfUtils {
     }
 
     public static byte[] imageToPdf(
-            MultipartFile[] files, String fitOption, boolean autoRotate, String colorType)
+            MultipartFile[] files,
+            String fitOption,
+            boolean autoRotate,
+            String colorType,
+            CustomPDDocumentFactory pdfDocumentFactory)
             throws IOException {
-        try (PDDocument doc = new PDDocument()) {
+        try (PDDocument doc = pdfDocumentFactory.createNewDocument()) {
             for (MultipartFile file : files) {
                 String contentType = file.getContentType();
                 String originalFilename = Filenames.toSimpleFileName(file.getOriginalFilename());
@@ -470,10 +476,15 @@ public class PdfUtils {
     }
 
     public static byte[] overlayImage(
-            byte[] pdfBytes, byte[] imageBytes, float x, float y, boolean everyPage)
+            CustomPDDocumentFactory pdfDocumentFactory,
+            byte[] pdfBytes,
+            byte[] imageBytes,
+            float x,
+            float y,
+            boolean everyPage)
             throws IOException {
 
-        PDDocument document = Loader.loadPDF(pdfBytes);
+        PDDocument document = pdfDocumentFactory.load(pdfBytes);
 
         // Get the first page of the PDF
         int pages = document.getNumberOfPages();

src/main/resources/messages_it_IT.properties

@@ -77,10 +77,10 @@ color=Colore
 sponsor=Sponsor
 info=Info
 
-legal.privacy=Informativa sulla privacy
+legal.privacy=Privacy Policy
-legal.terms=Termini e Condizioni
+legal.terms=Terms and Conditions
-legal.accessibility=Accessibilità
+legal.accessibility=Accessibility
-legal.cookie=Informativa sui cookie
+legal.cookie=Cookie Policy
 legal.impressum=Impressum
 
 ###############

src/test/java/stirling/software/SPDF/controller/api/RearrangePagesPDFControllerTest.java

@@ -8,15 +8,33 @@ import java.util.Arrays;
 import java.util.List;
 
 import static org.junit.jupiter.api.Assertions.*;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
 
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;import org.junit.jupiter.api.BeforeEach;
 class RearrangePagesPDFControllerTest {
 
+    @Mock
+    private CustomPDDocumentFactory mockPdfDocumentFactory;
+
+    private RearrangePagesPDFController sut;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        sut = new RearrangePagesPDFController(mockPdfDocumentFactory);
+    }
+
     /**
      * Tests the behavior of the oddEvenMerge method when there are no pages in the document.
      */
     @Test
     void oddEvenMerge_noPages() {
-        RearrangePagesPDFController sut = new RearrangePagesPDFController();
         int totalNumberOfPages = 0;
 
         List<Integer> newPageOrder = sut.oddEvenMerge(totalNumberOfPages);
@@ -30,7 +48,6 @@ class RearrangePagesPDFControllerTest {
      */
     @Test
     void oddEvenMerge_oddTotalPageNumber() {
-        RearrangePagesPDFController sut = new RearrangePagesPDFController();
         int totalNumberOfPages = 5;
 
         List<Integer> newPageOrder = sut.oddEvenMerge(totalNumberOfPages);
@@ -44,7 +61,6 @@ class RearrangePagesPDFControllerTest {
      */
     @Test
     void oddEvenMerge_evenTotalPageNumber() {
-        RearrangePagesPDFController sut = new RearrangePagesPDFController();
         int totalNumberOfPages = 6;
 
         List<Integer> newPageOrder = sut.oddEvenMerge(totalNumberOfPages);
@@ -72,8 +88,6 @@ class RearrangePagesPDFControllerTest {
                     "22,47,23,48,24,49'"
     })
     void oddEvenMerge_multi_test(int totalNumberOfPages, String expectedPageOrder) {
-        RearrangePagesPDFController sut = new RearrangePagesPDFController();
-
         List<Integer> newPageOrder = sut.oddEvenMerge(totalNumberOfPages);
 
         assertNotNull(newPageOrder, "Returning null instead of page order list");

src/test/java/stirling/software/SPDF/controller/api/converters/ConvertWebsiteToPdfTest.java

@@ -1,18 +1,36 @@
 package stirling.software.SPDF.controller.api.converters;
 
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
 import org.springframework.http.ResponseEntity;
 
+import stirling.software.SPDF.controller.api.RearrangePagesPDFController;
 import stirling.software.SPDF.model.api.converters.UrlToPdfRequest;
+import stirling.software.SPDF.service.CustomPDDocumentFactory;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 public class ConvertWebsiteToPdfTest {
+
+
+    @Mock
+    private CustomPDDocumentFactory mockPdfDocumentFactory;
+
+    private ConvertWebsiteToPDF convertWebsiteToPDF;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        convertWebsiteToPDF = new ConvertWebsiteToPDF(mockPdfDocumentFactory);
+    }
+
     @Test
     public void test_exemption_is_thrown_when_invalid_url_format_provided() {
 
         String invalid_format_Url = "invalid-url";
-        // Arrange
+
-        ConvertWebsiteToPDF convertWebsiteToPDF = new ConvertWebsiteToPDF();
         UrlToPdfRequest request = new UrlToPdfRequest();
         request.setUrlInput(invalid_format_Url);
         // Act
@@ -28,7 +46,6 @@ public class ConvertWebsiteToPdfTest {
 
         String unreachable_Url = "https://www.googleeeexyz.com";
         // Arrange
-        ConvertWebsiteToPDF convertWebsiteToPDF = new ConvertWebsiteToPDF();
         UrlToPdfRequest request = new UrlToPdfRequest();
         request.setUrlInput(unreachable_Url);
         // Act