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How are PDF files protected?

Access to PDF files can be secured so that not just anyone can open them. This is achieved by encryption – the bytes in...
Mark Stephens
1 min read

What are PDF Image Masks?

The PDF Mask features offer a whole set of functionality to allow complicated image drawing to happen. Rather than just sticking an image on...
Mark Stephens
1 min read

What are XFA Forms?

In this article I aim to provide an general introduction to XFA forms, the XML Forms Architecture, and how the data is stored in...
Chris Wade
1 min read

How much memory does your Java application use

I wanted to investigate the memory usage of our Java application to see how much memory was being used for a task – in...
Mark Stephens
1 min read

How are text links defined in a PDF file?

When you are viewing a PDF file, you may well notice that (like a web page) there are blue clickable links. These are defined...
Mark Stephens
1 min read