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I am getting a pdf in byte array. I want to convert just the 1st page of the pdf into image.

I have tired the classes provided by com.lowagie.text.pdf as follows -

PdfReader reader = new PdfReader(input); reader.selectPages("1"); File file = new File("D:/img1.jpg"); BufferedImage pdfImage = ImageIO.read(new ByteArrayInputStream(reader.getPageContent(1))); ImageIO.write(pdfImage, "jpg", file);

Doing this gives me an Exception when ImageIO.write is called? When I fetch the size of the byte array returned by reader.getPageContent(1), I get a 1000+ value. What confuses me is why do I get the Exception.

Exception - 

java.lang.IllegalArgumentException: image == null!

I tried itext as well but it was of no use.

Could you suggest me a way to get just image of the 1st page (1st page as image) from the byte array of the pdf file?

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  • I don't think getPageContent returns an image. Are you sure this library offers such functionality? Commented Jun 2, 2012 at 14:25
  • @Banthar - getPageContentreturns byte array which i pass to get a ByteArrayInputStream and then I am trying to write an Image. Commented Jun 2, 2012 at 14:29

2 Answers 2

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Answering on my own question so that others can be benefited with it. After some research I found it and got the solution.

Have a look at this link.

PDFDocumentReader document = new PDFDocumentReader(<byteArraOfThePDF>); PageDetail pageDetail = new PageDetail("<docIDanything>", "", <pagenumber>, ""); ResourceDetail det = document.getPageAsImage(pageDetail); BufferedImage image = ImageIO.read(new ByteArrayInputStream(det.getBytes())); File file = new File("d:/img2.jpg"); ImageIO.write(image, "jpg", file);
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1 Comment

Do you know that do-pdf is actually built on PDFBox?
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As far as I know this is not possible with iText (at least some time ago while I searched for a similar issue).

But you can use the PDFToImage from Apache PDFBox:

String [] args = new String[7]; args[0] = "-startPage"; args[1] = "1"; args[2] = "-endPage"; args[3] = "1"; args[4] = "-outputPrefix"; args[5] = "MyJpgFile"; args[6] = "MyPdfFile"; PDFToImage.main(args);

It's easy to write a wrapper for this. Perhaps such a wrapper is available in PDFBox in the meantime.

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