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

How do Layers work in a PDF file?

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
46 sec read

Understanding the PDF file format – Text, shapes and…

I have been looking at an issue for a potential client recently which required the generation of different views of the page. This is...
Mark Stephens
1 min read

How does color work in PDF files?

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

How Are Images Stored in a PDF file?

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

How are PDF files password protected?

One of the many reasons people do not put their content online is worries about security – they worry that the material can be...
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