Invented by Adobe Systems over 20 years ago, the Portable Document Format (PDF) is now an open standard for electronic document exchange maintained by the International Organization for Standardization (ISO). When you convert documents, forms, graphics, and web pages to PDF, they look just like they would if printed.

PDF

Learning about PDF

The PDF file format is very useful and well-documented, but it is also quite complicated and it does not work how most people imagine....
Mark Stephens
1 min read

PDF to image quality

The PDF file format was designed as much as possible to be Vector graphics. The problem with bitmaps and pixels is that pixels can...
Mark Stephens
2 min read

PDF text co-ordinates

There are several ways to define PDF text co-ordinates with PDF. When you see the text onscreen, you can see the actual character. The...
Mark Stephens
1 min read

What is PDF pagesize?

Page size can cause some confusion with PDFs because there are several possible values. All PDF files have a MediaBox which defines the size...
Mark Stephens
1 min read

JButton backgrounds

We use a lot of JButtons in our Java PDF viewer and thought that the following observations might be of help to other Java...
Mark Stephens
1 min read