thaks Leonard yes you're right! it isn't a jgp image and i can not find what type of image is it! :/
in this way (with direct reference) i can get the byte array of image ... PdfReader reader = new PdfReader("filePath"); PdfObject o = reader.getPdfObject(renderInfo.getRef()); PdfStream stream = (PdfStream) o; byte[] barray = PdfReader.getStreamBytesRaw((PRStream) stream); but ImageIo can't read it correctly and I have not yet understand the type of image .. the first hex byte are : 48 89 1c 96 8b .. not a known signature .. Gian -- View this message in context: http://itext-general.2136553.n4.nabble.com/colorspace-exception-during-images-extraction-on-a-existing-pdf-tp4660004p4660021.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Time is money. Stop wasting it! Get your web API in 5 minutes. www.restlet.com/download http://p.sf.net/sfu/restlet _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions iText(R) is a registered trademark of 1T3XT BVBA. Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php