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();
}
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 fine.
2. The default size in acrobat reader is shown as a smaller value (like
15% or 26%, screenshot attached) for converted PDFs. Even though it covers
100% of the screen (15% should 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?
Also, attached is a sample image that I am trying to convert.
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