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PDF validation fail on PDF v1.7 (Object already in table) https://forum.pdfsharp.net/viewtopic.php?f=2&t=3788 |
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Author: | surensaluka [ Mon May 14, 2018 6:32 am ] |
Post subject: | PDF validation fail on PDF v1.7 (Object already in table) |
Hi, I use PDFTRon for .NET to generate a PDF from Word documents. But when I send the generated document through PDFSharp component to validate the document it fails with the following error. Exception message: Object already in table. Stack trace: at PdfSharp.Pdf.Advanced.PdfCrossReferenceTable.Add(PdfReference iref) at PdfSharp.Pdf.IO.Parser.ReadXRefStream(PdfCrossReferenceTable xrefTable) at PdfSharp.Pdf.IO.Parser.ReadXRefTableAndTrailer(PdfCrossReferenceTable xrefTable) at PdfSharp.Pdf.IO.Parser.ReadTrailer() at PdfSharp.Pdf.IO.PdfReader.Open(Stream stream, String password, PdfDocumentOpenMode openmode, PdfPasswordProvider passwordProvider) at PdfSharp.Pdf.IO.PdfReader.Open(Stream stream, String password, PdfDocumentOpenMode openmode) at PdfSharp.Pdf.IO.PdfReader.Open(Stream stream, PdfDocumentOpenMode openmode) at BoardAppUtil.Util.FileUtility.ValidatePDFRestrictedModification(Byte[] fileData) in D:\Projects\BoardPACWeb_TFS_Workspace\BoardApp\Web\BoardAppWeb\BoardAppUtil\Util\FileUtility.cs:line 260 Following line is used to open the PDFTron generated PDF to modify by the PDFSharp. I need to add an additiona page to this document. I use PDFSharp for that. PdfDocument inputDocument1 = PdfReader.Open(pdfStm, PdfDocumentOpenMode.Modify); I can send the PDFTron generated document which fails the PDFSharp's "Open" function. (Please specify an email address) |
Author: | Thomas Hoevel [ Mon May 14, 2018 9:33 am ] |
Post subject: | Re: PDF validation fail on PDF v1.7 (Object already in table |
Hi! This is the result from QPDF: Code: D:>qpdf --check "PDFTron converted file.pdf" checking PDFTron converted file.pdf PDF Version: 1.7 File is not encrypted File is linearized ERROR: linearized file contains an uncompressed object after a compressed one in a cross-reference stream WARNING: page 0 has shared identifier entries WARNING: page 0: shared object 7: in hint table but not computed list WARNING: page 0: shared object 8: in hint table but not computed list WARNING: page 0: shared object 9: in hint table but not computed list WARNING: page 0: shared object 10: in hint table but not computed list AFAIK the object 14 0 appears twice in the PDF file. Adobe Reader uses one and ignores the other, PDFsharp throws an exception. I do not know which ob those two objects should be prioritized and which should be ignored. BTW: A GIF file with 6350 bytes is converted to a 7039 JPEG file and then embedded in PDF. |
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