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: Your 5 minute guide…

Why are Indexed Colorspaces useful? Indexed colorspaces are very useful if you only have a limited number of colors in an image. If you...
Mark Stephens
1 min read

Blend modes in Java2D and JavaFX

As mentioned previously the PDF format contains blend modes, a set of functions determining how overlapping objects on a page interact with the objects underneath...
Simon Lissack
1 min read

Understanding the PDF File Format: Blend Modes

The PDF FIle Format includes some very sophisticated features. One of the most interesting ones is the Blend Mode (introduced in PDF version 1.4)....
Mark Stephens
1 min read

Book Review – Developing with PDF By Leonard Rosenthol

Did you know that the second line of the PDF is a set of characters to make sure PDF files are treated as binary...
Mark Stephens
2 min read

Check if a PDF is valid using the HTML5…

Using the HTML5 File API to validate PDF Files Recently in my own time I have been familiarizing myself with the HTML5 File API....
Lyndon Armitage
5 min read