Unable to decompress Xref Stream
HiI am trying to get the cross-reference stream for weeks now, and have almost pulled all my hair out. =(Can anyone show me how to get the cross-reference stream?I use the FlateDecode() from iText...
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Blue background behind text
Often when we print from a third party application the PDF comes out with adark blue background that is very hard to read.Any fix for this?
View ArticleUnicode Passwords
Hi, I wonder how acrobat handles a password that contains unicode characters when generating an encryption key. That is, what byte representation (i.e. encoding of the password string) is used, before...
View ArticlePDF debugging tools?
Are there any pdf "debugging" tools available, and if, what are they called? When trying to generate some PDF-files from scratch it is sometimes quite a bit of work trying to figure out where the...
View ArticleHow to use subsection of Xref table??
1 0 obj<</Type/Catalog/Pages 9 0 R>>endobj....3 0 obj<</Type/Page/Resources<</XObject<</Image01 2 0 R>>/ProcSet[/PDF/ImageC]>>/Parent 9 0 R/Contents 4 0...
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PDF size in px in different readers
Hello! I'm generating a PDF with pictures and I want the pictures to have exactly a certain size in pixels (e.g. 200x200 px) on monitor when viewed from a PDF reader (when zoom is 100 %). But Adobe...
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 ArticleHow can I translate these Tj operator to readable text..
Hi, I am trying to parsing a document's text, but I found the Text object's Tj/Tm operator of this document is like following data.Does anyone know what data I should reference to translate this code...
View ArticlePDF javascript submitForm/getURL POST
I'm trying to do a POST HTML request to a web server and display the results in the browser (ideally in a separate tab/window). Basically, if the adobe reader is running inside a browser, then this...
View ArticleUsage Rights question
Hi, I'm working on a product which allows to generate PDF files. One of our customers has asked about enabling Usage Rights in Abode Reader for the generated documents. So I'm currently investigating...
View ArticleRotating text in PDF
Hi there,For some of my work, I'm trying to create a bunch of diagrams and graphics of different kinds directly in PDF. I've written a little Python library to help me do this. The spec is very easy to...
View ArticleHow to make transparent PDF file
If anyone knows how to make a PDF file becomes transparent, please tell me. As i want to compare the contents of two PDF files. Thank you.
View ArticleHyperlink to Attached "Folder"
In my PDF, I would like to hyperlink the user to a folder of files (instead of a single file). Is this possible? I have looked into the "Attach File" option in the PDF, but it seems to only allow...
View Articlecatalog dictionary: /AcroForm optional or required
Hi, i have a question: PDF 1.4 (due to PDF/A) specification defines the 'AcroForm' key in the catalog dictionary as optional.But this can mean two things: A)- If the pdf has form NO fields ->...
View ArticleOTF/CFF font in PDf
Hello, I work on full embedding of OTF files with CFF table into PDF. It looks like simple (not CID-keyd) fonts can be embedded both as Type1 fonts and like Type0 CID fonts with FontFile3 of OpenType...
View ArticleHow does PDF convert CMYK to RGB?
Hi I want to know the formula that PDF uses to convert DeviceCMYK to DeviceRGB values. It seems that Photoshop and PDF uses the same forula, where the other Programs use the "normal" formula, which can...
View ArticleAbsolute text glyph positioning and size on PDF page
Hi there, I'm processing some old scans by vectorizing the best glyph for each character, converting this into a Type 3 font and then drawing the text on the page from the font. The problem I'm having...
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 ArticleCharacter replacement within a PDF
I've been working on a tool to replace a specified character from within an Indesign pdf. When truetype fonts are used this posed no problems, but when type0 fonts are used the character mapping...
View ArticleAutomatically scaling/sizing a PDF file
I support a web-based application that includes a query tool which allows the user to generate a PDF file from the query results. The PDF file is generated in landscape orientation and contains several...
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