removal of all getByte loads (#3153)

# Description of Changes

Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: a <a>

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

@@ -52,7 +52,7 @@ public class AutoRenameController {
         MultipartFile file = request.getFileInput();
         Boolean useFirstTextAsFallback = request.isUseFirstTextAsFallback();
 
-        PDDocument document = pdfDocumentFactory.load(file.getBytes());
+        PDDocument document = pdfDocumentFactory.load(file);
         PDFTextStripper reader =
                 new PDFTextStripper() {
                     List<LineInfo> lineInfos = new ArrayList<>();

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

@@ -84,7 +84,7 @@ public class BlankPageController {
         int threshold = request.getThreshold();
         float whitePercent = request.getWhitePercent();
 
-        try (PDDocument document = pdfDocumentFactory.load(inputFile.getBytes())) {
+        try (PDDocument document = pdfDocumentFactory.load(inputFile)) {
             PDPageTree pages = document.getDocumentCatalog().getPages();
             PDFTextStripper textStripper = new PDFTextStripper();
 

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

@@ -50,7 +50,7 @@ public class DecompressPdfController {
 
         MultipartFile file = request.getFileInput();
 
-        try (PDDocument document = pdfDocumentFactory.load(file.getBytes())) {
+        try (PDDocument document = pdfDocumentFactory.load(file)) {
             // Process all objects in document
             processAllObjects(document);
 

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

@@ -95,8 +95,7 @@ public class ExtractImageScansController {
             // Check if input file is a PDF
             if ("pdf".equalsIgnoreCase(extension)) {
                 // Load PDF document
-                try (PDDocument document =
-                        pdfDocumentFactory.load(form.getFileInput().getBytes())) {
+                try (PDDocument document = pdfDocumentFactory.load(form.getFileInput())) {
                     PDFRenderer pdfRenderer = new PDFRenderer(document);
                     pdfRenderer.setSubsamplingAllowed(true);
                     int pageCount = document.getNumberOfPages();

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

@@ -67,7 +67,7 @@ public class ExtractImagesController {
         MultipartFile file = request.getFileInput();
         String format = request.getFormat();
         boolean allowDuplicates = request.isAllowDuplicates();
-        PDDocument document = pdfDocumentFactory.load(file.getBytes());
+        PDDocument document = pdfDocumentFactory.load(file);
 
         // Determine if multithreading should be used based on PDF size or number of pages
         boolean useMultithreading = shouldUseMultithreading(file, document);

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

@@ -50,7 +50,7 @@ public class FlattenController {
     public ResponseEntity<byte[]> flatten(@ModelAttribute FlattenRequest request) throws Exception {
         MultipartFile file = request.getFileInput();
 
-        PDDocument document = pdfDocumentFactory.load(file.getBytes());
+        PDDocument document = pdfDocumentFactory.load(file);
         Boolean flattenOnlyForms = request.getFlattenOnlyForms();
 
         if (Boolean.TRUE.equals(flattenOnlyForms)) {

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

@@ -84,7 +84,7 @@ public class MetadataController {
             allRequestParams = new java.util.HashMap<String, String>();
         }
         // Load the PDF file into a PDDocument
-        PDDocument document = pdfDocumentFactory.load(pdfFile.getBytes());
+        PDDocument document = pdfDocumentFactory.load(pdfFile);
 
         // Get the document information from the PDF
         PDDocumentInformation info = document.getDocumentInformation();

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

@@ -55,8 +55,7 @@ public class PageNumbersController {
         String pagesToNumber = request.getPagesToNumber();
         String customText = request.getCustomText();
         int pageNumber = startingNumber;
-        byte[] fileBytes = file.getBytes();
-        PDDocument document = pdfDocumentFactory.load(fileBytes);
+        PDDocument document = pdfDocumentFactory.load(file);
         float font_size = request.getFontSize();
         String font_type = request.getFontType();
         float marginFactor;

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

@@ -43,7 +43,7 @@ public class ShowJavascript {
         MultipartFile inputFile = request.getFileInput();
         String script = "";
 
-        try (PDDocument document = pdfDocumentFactory.load(inputFile.getBytes())) {
+        try (PDDocument document = pdfDocumentFactory.load(inputFile)) {
 
             if (document.getDocumentCatalog() != null
                     && document.getDocumentCatalog().getNames() != null) {