Converting a PDF into multiple JPGs with iText or other

Question

I have the need to convert any multipage PDF file into a set of JPGs.

Since the PDF files are supposed to come from a scanner, we can assume each page just contains a graphic object to extract, but I cannot be 100% sure of that.

So, I need to convert any renderable content from each page into a single JPEG file.

How can I do this with iText?

If I can't do this with iText, what Java library can achieve this?

Thanks.

The term for this is a PDF-renderer. Is calling a native program an option? If yes, what platform? — Thorbjørn Ravn Andersen, Jun 21 '11 at 07:49
Not sure. But it must work on Windows (dev) and Linux (test&production) — usr-local-ΕΨΗΕΛΩΝ, Jun 21 '11 at 08:04

score 2 · Answer 1 · answered Jun 21 '11 at 11:50

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Ghostscript (available for Windows, Linux, MacOS X, Solaris, AIX,...) can convert...

...from input formats: PDF, PostScript, EPS and AI
...into output formats: JPEG, TIFF, PNG, PNM, PPM, BMP, (and more).

(The ImageMagick mentioned above doesn't do the conversion on its own -- it uses Ghostscript under the hood, as do many other tools.)

answered Jun 21 '11 at 11:50

Kurt Pfeifle

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iText uses Ghostscript and ImageMagick under the hood in the tests. Ghostscript to convert PDF into PNG files, and then ImageMagick to compare the PNG files. Check the `CompareTool ` class in the iText source code for more information. – Amedee Van Gasse Jun 22 '17 at 08:05

score 1 · Accepted Answer · answered Jun 21 '11 at 08:36

1

ICEpdf - http://www.icepdf.org/ - has an open source entry version which should do what you need.

I believe the primary difference between the open source version and the pay-for version is that the pay-for has much better font support.

answered Jun 21 '11 at 08:36

Thorbjørn Ravn Andersen

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Seems feasible. At least the home page advertises this feature. Do you know if there is any quick start on JPEG rendering so we can make a raw proof of concept in order to request the official import of the package into the project? (I hate bureocracy but "dura lex sed lex") – usr-local-ΕΨΗΕΛΩΝ Jun 21 '11 at 09:12
I looked at the project a while back, but we went a different path so I do not have first hand experience with it. I would suggest registering and download their stuff, to see if any of the demos listed on their web page (which render images) are included. – Thorbjørn Ravn Andersen Jun 21 '11 at 09:22

score 1 · Answer 3 · answered Jun 21 '11 at 11:10

1

You can also use Sun's PDF-Renderer and JPedal does PDF to image (low and high res.

answered Jun 21 '11 at 11:10

mark stephens

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score 1 · Answer 4 · answered Dec 08 '11 at 14:37

With Apache PDFBox you could do the following:

PDDocument document = PDDocument.load(pdffile);
List<PDPage> pages = document.getDocumentCatalog().getAllPages();
for (int i = 0; i < pages.size(); i++) {
  PDPage page = pages.get(i);
  BufferedImage image = page.convertToImage(BufferedImage.TYPE_INT_RGB, 72);
  ImageIO.write(image, "jpg", new File(pdffile.getAbsolutePath() + "_" + i + ".jpg"));
}

Converting a PDF into multiple JPGs with iText or other

4 Answers4

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