PDF cross-reference streams
Hello, I noticed a behaviour I don't understand with some PDFs. They are hybrid-reference file where both cross-reference sections carry the same informations (there are 9 meaningful objects and the 9...
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can I generate a swf from PDF?
hello everybody, how I can generate a swf from PDF -> text and images, Example I have these files:mytext.txt and some pics image1.jpg image2.jpgThis files, was parsing from a pdf file, and I need to...
View ArticleHow can I write inline image in PDF file?
Hi All, I am writing an image as inline in the PDF file but the output is blank. I wrote other elements like text, lines and rectangles and they seem to output fine. I have attached the PDF file for...
View ArticleStandard 14 fonts embedding
Hello, I read several times carefully the table 111 of ISO-32000, and always bear in mind that "Beginning with PDF 1.5, the special treatment given to the standard 14fonts is deprecated. Conforming...
View Articlehow to embed font?
Hi ! please tell me how to embed font in a pdf file without compress it so that i can modify the content of the file if i embed by acrobat or some tool , after that i can not open file in...
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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 ArticleWhat are the permitted compression techniques for PDF/A-1?
The PDF/A-1 standard does not specify how compression is performed. What are the permitted compression techniques for PDF/A-1? The information I have gathered (not sure if all are true) LZW should not...
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 Articlepassword encryption with 256 bit AES algorithm...???
I have an application for the decryption of pdf passwords for 128 bit Rc4 and 128 AES. In this, i am doing 50 times MD5 using an encryption key. Its working well with this approach. But in case of 256...
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 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 ArticleInsert special char using Tj
Hello, I try to insrt speecial char using a Tj operator. Actually I have no problem for all char (between 0 and 255) but for special char (e.g.æӴẬӱӪŢǞẮ⌅ᑴᆩᆩ붾◢4ᇗ) I don't know how to do.For the simple...
View ArticlePDF newbie: image in PDF
I am trying to learn the PDF language and make some PDF files from scratch. I have made some text files which work and now I want to insert some images, but I can't get it to work!I have made a...
View ArticleParse XREF table and stream
I open Pdf Reference 1.7 file with a binary viewer program and I want to parse the xref data.At the end of file is:startxref129%%EOF At offset 129 is the linearization xref-table with 817 entries and...
View ArticleAdd / Save paragraph and characters styles in PDF
Hi all, We recently did some tests with PDF to ePub export (different settings, different tools). What we saw is that none of the tools were able to respect paragraph and text styles. They just threw...
View Articlehow to create digital signature
<</ByteRange[ 0 18705 23193 67300] /Contents<00000000000000000000000000000000000000000000000000000000000...
View Articlesearchability & metadata extraction on password protected or compressed PDFs
Hello, I am currently putting together a new document management system at my company (using http://www.alfresco.com ) and part of the functionality will involve automatic metadata extraction from...
View ArticleInclude EPS image in PDF
Hi.I Want to include EPS image in PDF document but i don't know how to!Please help me, i don't found in the PDF referece how to!Thanks bye!
View Articleacro 9; self signed digital id; password length
I posted the below question in the acrobat win users group earlier today...but thought it might better answered here since it will be specification or language level answered. I really need to find...
View ArticleTm operator
Hi, I have line like this: 11.5 0 0 10.925 213.138 352.5073 Tm I know, it's explained inside PDF 32000-1:2008 on page 250, but I still don't know how to read from this. Can someone explained this to me...
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