Annotation field locked and subsequent digital signatures
Hi all, i'm testing my PAdES digital signature library in Obj-C and i encountered this kind of PDF file http://dl.dropbox.com/u/3995257/PDF/Locked.pdf Acrobat Reader tells that the document is locked...
View Articleprogrammatically add button to pdf
Is it possible to programmatically add a submit button and hidden form fields to a PDF?
View ArticlePlease, help with Incremental Update for Linearized document.
Hi, here is my problem.I'm working in my own annotation app. It incrementally updates pdfs. Works fine with most of the pdfs.But i've found couple of pdfs, that was being corrupted after updating. Here...
View Articlexref with object number greater than trailer's size value
Hello, a client sent to us a PDF with a strange xref table. Here is what it looks like: xref0 55%% standart xref entries200001 50000052507 00000 n 0000052793 00000 n 0000053079 00000 n 0000053365...
View ArticleProblems computing the User Password to encrypt a PDF.
HiI'm trying to implement the algorithms for computing the encryption key of a PDF, as is explained in the PDF Reference specifications, for the Java PDF Library that i'm developing. I had no problem...
View ArticleBaseFont and FontName must be equals?
I have trouble with an PDF/A document and some readers we are using: - Acrobat (Reader) 9.X works fine- Acrobat (Reader) 6.X and our own inhouse reader have problems I tracked it down to the following...
View Articlehow to insert png to pdf?
I have readed the pdf reference 1.6,i want to insert png to pdf.i konw that the png consits of alpha and RGB,31 0 obj<</BitsPerComponent 8/ColorSpace/DeviceRGB/Filter/DCTDecode/Height 154/Length...
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Pdf text extract problem with CID font and Identity-H
Hi all, Iam facing some big problem with text extraction from pdf file.Currently iam using congviews pdf2xl text extraction tool.About 95% of the text extract correcly but few charaters showing box...
View ArticleCID to Unicode Value
Hi,I've got a new question, that is how could I get the corresponding unicode value if I have only the CID value?Thanks.
View Articledifferentiating between a text and an image PDF
Hi, I am a total newbie to pdf development. Basically I am working on a MS SQL Server procedure that looks for a specific keyword in the uploaded pdf. The uploaded pdf is stored in a binary column of a...
View ArticlePDF page name
Sorry for bad English.Where can I read about page names?For example: Roman numerals(instead of numeric pages) in PDF specification first pages.http://www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf
View ArticleAdding XRef table to PDF w/ XRef streams?
I'm trying to fill in interactive form annotations by appending the PDF with updated versions of the annotation objects. I'm following the example in the appendix of the PDF spec for adding/modifying...
View ArticleInverse y axis and text
When we draw in windows the origin is at the upper left point.I tranform it to the lower left with matrix M=[sc, 0, 0, -sc, 0, y] where sc is some scaling and y the height of the window.The result...
View ArticleWhat is wrong with my PDF file?
I need your help! I have uploaded two PDF/A-1b files to the location: https://share.acrobat.com/adc/document.do?docid=93b84f92-c603-42a9-992 5-3703805686aa They are almost the same and created by our...
View ArticleDetermining word boundaries when no space exists in text
I am developing a text search feature for a viewer application and I run into PDFs quite often that do not use the space character to delineate word boundaries. For example, a text showing operator...
View ArticleUnicode font support in PDF
I'm trying to come up with a time estimate on supporting Unicode fonts in PDF. The code I have generates PDFs fine for non-Unicode fonts and text already, and I've seen quotes elsewhere on this forum...
View ArticleReading PDF using PHP
Is there any way to read PDFs using PHP? Would appreciate the help. Thanks,Jyotsna
View ArticleStream lengths
Here's a place where the specification is just flat out ambiguous (yet again, a tiny example would have resolved the problem).If the line break character is LF, what is the length of the following...
View ArticleHow to Convert a Scanned Document (Paper Port) to PDF?
I'm having a pretty simple problem: At my new job, I have to scan in documents through a Visoneer 8650 scanner with Paper Port software. I also have Acrobat 5.0 and Acrobat Reader 7.0. Once the...
View ArticleUnicode Text Extract
It looks this problem is not uncommon... I have a PostScript file that is generated by a 3rd party product. Distiller converts it to PDF, but I cannot search or copy a text. It looks this is because...
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