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.

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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

Where do PDF viewers get font data for non-embedded…

What are Standard fonts? One of the reasons that the PDF file format is so popular is that it embeds a large amount of...
Mark Stephens
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…

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

What is a Linearized PDF?

A linearized PDF is a special way to organize a PDF file. What are Linearized PDF files? In general, the PDF is a very...
Mark Stephens
2 min read