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ank5Flag for India

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PDFBox - convert image to PDF, PDF resolution

I am using PDFBox v2 to convert jpg images to PDF. JPG image is already on the filesystem, so I just pick it up and convert it to PDF. Below is my code

public void convertImgToPDF(String imagePath, String fileName, String destDir) throws IOException {
        PDDocument document = new PDDocument();
        InputStream in = new FileInputStream(imagePath);
        BufferedImage bimg = ImageIO.read(in);
        float width = bimg.getWidth();
        float height = bimg.getHeight();
        PDPage page = new PDPage(new PDRectangle(width, height));
        document.addPage(page);
        PDImageXObject img = PDImageXObject.createFromFile(imagePath, document);
        PDPageContentStream contentStream = new PDPageContentStream(document, page);
        contentStream.drawImage(img, 0, 0);
        contentStream.close();
        in.close();
        document.save(destDir + "/" + fileName + ".pdf");
        document.close();
    }

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This code does the conversion just fine. However, I have observed the following in converted PDFs

1. When I open a converted PDF, it opens very slowly (in Acrobat reader). It seems as it PDF is opening pixel by pixel. If I open any other PDF, it opens just fine.

2. The default size in acrobat reader is shown to a smaller value (like 15% or 24%, screenshot attached) for converted PDFs. Even though it covers 100% of the screen (15% sould have implied that I see a much smaller image, but that is not the case). When I change the size to 100%, I see a highly blurred image which is much larger than the actual image and I have to scroll left/right and top/down to see the complete image.

Both these observations make me feel that for some reason the PDF that is getting generated is a much higher resolution than it should have been. Would that be a fair statement? If so, how can I correct this?
PDFSize.PNG
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Justin May

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mccarl
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Dear user
Usually I prefer to use Image to PDF converter when I have to convert multiple Image into PDF file format. I think it can prove useful for you too. But I would like to suggest you to try the free version first. When you are totally satisfied with the tool then only it's beneficial to purchase it.

Thanks & Regards
Edwin Hoffer