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

Why we need to see your PDF files…

What makes writing a PDF parser especially interesting (ie complex) is that the specification is often ambiguous and that PDF is a very complex...
Brendan
1 min read

Using the PDF file format for ‘plumbing’ at RandomHouse

I was visiting a client (RandomHouse) yesterday and it struck me that PDF is actually very commonly used inhouse to provide other products and services....
Mark Stephens
1 min read

Why can’t I just open and edit a PDF…

People sometimes try to edit a PDF file by opening the file in a text editor. This very rarely works for 3 reasons. Firstly,...
Mark Stephens
1 min read

What does an OCR PDF file contain?

What is an OCR PDF file? Some PDF files are generated from scanning in pages as images, and these have their own unique quirks....
Mark Stephens
1 min read

Understanding the PDF file format – Layers

One of the really cool features about PDF files is that they are not a boring, static file format – they can interact with...
Mark Stephens
1 min read