I tried converting slides into png.

It exported png, but the exported png contains only background. It is not rendering text in it, also the exported background scale is too big that only 1/4 of the image is rendered as png.

Attached is the PPTX and the java code I am using.


//java code

        FileInputStream is = new FileInputStream("KEY02.pptx");
        XMLSlideShow ppt = new XMLSlideShow(is);
        is.close();

        Dimension pgsize = ppt.getPageSize();

        XSLFSlide[] slide = ppt.getSlides();
        for (int i = 0; i < slide.length; i++) {

            BufferedImage img = new BufferedImage(pgsize.width, pgsize.height, BufferedImage.TYPE_INT_RGB);
            Graphics2D graphics = img.createGraphics();
            //clear the drawing area
            graphics.setPaint(Color.white);
            graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));

            //render
            slide[i].draw(graphics);

            //save the output
            FileOutputStream out = new FileOutputStream("slide-" + (i + 1) + ".png");
            javax.imageio.ImageIO.write(img, "png", out);
            out.close();
        }