If you use PdfSmartCopy, you at least won't get duplicates from the same document. However, iText doesn't currently look to see if it has (for example) two identical copies of a font from separate files.
It might be easier to come up with a separate utility to go over a given PDF and remove redundant objects, and fix up references to them. Not easy, but quite possible. Ugh.. My initial thought was to build a hash for each object in a PDF, and look closely at hash matches to find duplicates. But it won't work. XObject A might be identical to XObject B, save that they reference different copies of the same image. A single pass hash of their toString output would not catch the match, though it would remove the redundant image. Multiple passes would be necessary until a pass found no matches. Not Efficient at all, but serviceable. You might end up with a resource directory that had several aliases for the same font/image/whatever, but I could live with that. --Mark Storer Senior Software Engineer Cardiff.com import legalese.Disclaimer; Disclaimer<Cardiff> DisCard = null; > -----Original Message----- > From: mukkakish...@yahoo.co.in [mailto:mukkakish...@yahoo.co.in] > Sent: Thursday, September 02, 2010 2:28 AM > To: itext-questions@lists.sourceforge.net > Subject: [iText-questions] iText combine size large and > fonts/backgroundsduplicated > > Hello Everyone, > > We have an issue with huge size of combined PDF File using iText. > > We have written a logic to combine the pdf files using iText > and we observed that, iText Combines PDF successfully. But, > not removing duplicate fonts, backgrounds. > > We tried to perform the same merge using Adobe Standard > version. The size out of it is 2 MB for 200 files. > > But, the same for iText Merge is 15MB. So,we missed something > and upon investigation, we found that, it is with duplicate > fonts and backgrounds. Adobe does a consolidation of > duplication of fonts and page backgrounds. > > Our source of pdf files are output from a Single Crystal > Report. Users will be combining these reports based on their > requirement from the Crystal Output files. So, there is a > single type of Crystal Report output in PDF format. > > Could you please advise, if we have any Class/function to do this. > > Thank you > Kishore Mukka > > -- > This message was sent on behalf of mukkakish...@yahoo.co.in > at openSubscriber.com > http://www.opensubscriber.com/message/itext-questi...@lists.so urceforge.net/5762681.html > > -------------------------------------------------------------- > ---------------- > This SF.net Dev2Dev email is sponsored by: > > Show off your parallel programming skills. > Enter the Intel(R) Threading Challenge 2010. > http://p.sf.net/sfu/intel-thread-sfd > _______________________________________________ > iText-questions mailing list > iText-questions@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/itext-questions > > Buy the iText book: http://www.itextpdf.com/book/ Check the > site with examples before you ask questions: > http://www.1t3xt.info/examples/ You can also search the > keywords list: http://1t3xt.info/tutorials/keywords/ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.851 / Virus Database: 271.1.1/3102 - Release > Date: 09/01/10 11:34:00 > ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.itextpdf.com/book/ Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/
