Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems.

PDF File Format

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
2 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
2 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

Understanding PDF text objects

Understanding PDF Text Objects Inside a PDF is a Postscript stream of commands which describe the page – they draw the text, images or...
Mark Stephens
1 min read

How to calculate PDF page size in inches or…

The size of a PDF is generally defined by the CropBox or MediaBox setting for each page. This is the number of pixels. This...
Mark Stephens
53 sec read