Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. The Specification refers to the specification that it needs to meet.

PDF file specification

Who decides what is in the PDF file specification?

This used to be a really easy question to answer – Adobe. The PDF file format was invented by the co-founder of Adobe (John...
Mark Stephens
1 min read

Where do your PDF objects start in a PDF…

In theory this is a really easy question to answer. There is a reference table to all the PDF objects in the file giving...
Mark Stephens
1 min read

Understanding the PDF file Format – Custom font encodings

One very powerful feature of the PDF file specification is the ability is the option to create custom font encodings. This means that for...
Mark Stephens
1 min read