Prediction & 4 bitsperpixel in flatedecode filter
Hi,I have an CMYK image which is flatedecoded, predictor is 15 & there are 4 bits per component. Can someone tell me how do I decode this stream properly? What is the correct oreder of...
View ArticleReading a PDF stream for LZW decompression?
Hello.. I'm really struggling here. I am currently using the Rosetta Code implementation for LZW decompression (C++). This implementation requires numerical imput. That is.. the input in it's...
View ArticleHow to print a pdf without user interaction (With C#)
My boss assigned me a task that to get the ImagePreview of 1st page of PDF.My thought is to print the 1st page of PDF to file(virtual print to file), and get the image source, but there comes the...
View Article"To view the full contents of this document..."
Hi All, I am working on a PDF parser and while parsing PDF file I am able to parse the document catalog & cross reference table but when it comes to content I get a message "To view the full...
View ArticleWhy have a default user password feauture?
Hi, I (understood) read in the manual that there could be a default user password - 28 BF 4E 5E 4E 75 8A 41 64 00 4E 56 FF FA 01 082E 2E 00 B6 D0 68 3E 80 2F 0C A9 FE 64 53 69 7A. If the file is...
View ArticleDecoding TJ on BT...ET block...
Hi, I have some problem when i try to decode this kind of thinks : [(\007\003\b\007\006)-275(\004\002\005\003\007)]TJ(\000)Tj(\024\020\004\b\000\017\032\035\030\034\000\025\021\001\033\036\027\r\...
View ArticlePDF form field rectangle out of page coordinates
Hi, recently i came across a PDF file which had a (text) form field with the following rectangle coordinates: LowerLeft: 170;850UpperRight: 475;862 The page itself had: 595;841 whereas...
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 overlapping quality of two adjacent polygons.
We generate a PDF file using your standard (PDF32000_2008.pdf). This is some parts of our PDFs:% Draw first adjacent polygon.q0.0000 0.0000 m100.0000 0.0000 l0.0000 100.0000 lh W* n/ExtGState2...
View Articlehow to map from cid to unicode
Hello.I'm now trying to convert cid to unicode by using the toUnicode cmap.The toUnicode cmap I extracted is as follows: /CIDInit /ProcSet findresource begin12 dict beginbegincmap/CIDSystemInfo<<...
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 ArticleIdentity-H, CMap and troubles choosing predefined encodings
I'm trying to parse certain pdf document on Mac OS X. The pages have embeded CID () fonts with Identity-H encoding. The font itself is Type0 font with CIDFontType2 descendant font. I'm able to extract...
View ArticleFDF no longer works in Reader 10.1.1. Worked in 9.x and previous
I have a web app that was developed many years ago to serve PDF "templates" with user data inserted into it's forms via FDF. Up until Adobe Reader 10.1.1 (currently testing with this version, possibly...
View ArticlePdf Header Format Question
Hello, I have a question about the PDF header. I have noticed that we have some pdf's that have a header like "%PDF-1.3\r\n", note that this header has both a carraige return and line feed (\r\n). Then...
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...
View ArticlePrediction & 4 bitsperpixel in flatedecode filter
Hi,I have an CMYK image which is flatedecoded, predictor is 15 & there are 4 bits per component. Can someone tell me how do I decode this stream properly? What is the correct oreder of...
View Article"To view the full contents of this document..."
Hi All, I am working on a PDF parser and while parsing PDF file I am able to parse the document catalog & cross reference table but when it comes to content I get a message "To view the full...
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 ArticleProblem saving Reader extended PDF with Javascript functions built in
Afternoon I have created an interactive PDF in Livecycle with built in Javascript functionality. I need users to be able to complete and save the PDF so have saved it as a Reader extended PDF. The...
View ArticleReading a PDF stream for LZW decompression?
Hello.. I'm really struggling here. I am currently using the Rosetta Code implementation for LZW decompression (C++). This implementation requires numerical imput. That is.. the input in it's...
View Article