PDF to image using Java [duplicate]

In Ghost4J library (http://ghost4j.sourceforge.net), since version 0.4.0 you can use a SimpleRenderer to do the job with few lines of code:

1. Load PDF or PS file (use PSDocument class for that):

       PDFDocument document = new PDFDocument();
       document.load(new File("input.pdf"));
   

2. Create the renderer

       SimpleRenderer renderer = new SimpleRenderer();
   
       // set resolution (in DPI)
       renderer.setResolution(300);
   

3. Render

       List<Image> images = renderer.render(document);
   

Then you can do what you want with your image objects, for example, you can write them as PNG like this:

            for (int i = 0; i < images.size(); i++) {
                ImageIO.write((RenderedImage) images.get(i), "png", new File((i + 1) + ".png"));
            }

Note: Ghost4J uses the native Ghostscript C API so you need to have a Ghostscript installed on your box.

I hope it will help you 🙂