Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems.

PDF File Format

Understanding the PDF file format – Color

Color is a complex topic in PDF. This article helps to explain how it works. Color in PDF files Color can be defined in...
Mark Stephens
1 min read

Understanding the PDF file format – How Are Images…

How are images stored? When I was learning the PDF file format, I found Images could be quite a complex topic in PDF so...
Mark Stephens
1 min read

PDF mystery – what is the correct value for…

I came across an interesting issue with PDF Text fields while debugging a file this week. We were sent a 2 page document created...
Chris Wade
1 min read

There is more than one PDF file specification

One of the really annoying thing about working with PDF is that there is actually more than one PDF file specification. First of all,...
Mark Stephens
1 min read

Understanding the PDF file format – text streams

Understanding Text Streams Inside a PDF is a Postscript stream of commands which describe the page – they draw the text, images or shapes....
Mark Stephens
1 min read