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Understanding the PDF file format – Color

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

Glyph names- what is in a name?

I came across a rather intriguing problem while debugging a font issue in a PDF created by a tool called A-PDF. The PDF specification...
Mark Stephens
1 min read

Understanding the PDF file format – CMYK does not…

PDF is a very flexible file format in which colour can be represented in lots of different ways. This allows great flexibility and also...
Mark Stephens
1 min read

Understanding the PDF file format – How Are Images…

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

Understanding the PDF file format – PDF password protection

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