Extract Images from PDF File using Java

Aspose.PDF for Java supports direct image-resource extraction and placement-based filtering.

Extract an embedded image by index

Use this example when you need to save a specific image resource from a PDF page.

1. Open the source PDF Document.
2. Access the target XImage from the page resources.
3. Save the image stream to an output file.

public static void extractImage(Path inputFile, Path outputFile) throws Exception {
    try (Document document = new Document(inputFile.toString());
         OutputStream outputImage = Files.newOutputStream(outputFile)) {
        XImage image = document.getPages().get_Item(1).getResources().getImages().get_Item(1);
        image.save(outputImage);
    }
}

Extract images from a specific page region

Use this example when only images placed inside a selected rectangle should be exported.

1. Define the target Rectangle and open the source PDF.
2. Use ImagePlacementAbsorber to inspect image placements on the page.
3. Save only the images whose placement fits inside the selected region.

public static void extractImageFromSpecificRegion(Path inputFile, Path outputFile) throws Exception {
    Rectangle rectangle = new Rectangle(0, 0, 590, 590, true);

    try (Document document = new Document(inputFile.toString())) {
        ImagePlacementAbsorber absorber = new ImagePlacementAbsorber();
        document.getPages().get_Item(1).accept(absorber);
        int index = 1;
        for (ImagePlacement imagePlacement : absorber.getImagePlacements()) {
            Point point1 = new Point(imagePlacement.getRectangle().getLLX(), imagePlacement.getRectangle().getLLY());
            Point point2 = new Point(imagePlacement.getRectangle().getURX(), imagePlacement.getRectangle().getURX());
            if (rectangle.contains(point1, true) && rectangle.contains(point2, true)) {
                Path indexedOutputFile = Path.of(outputFile.toString().replace("index", String.valueOf(index)));
                try (OutputStream outputImage = Files.newOutputStream(indexedOutputFile)) {
                    imagePlacement.getImage().save(outputImage);
                }
                index++;
            }
        }
    }
}