Back to Table of Contents

Use of PAC (PDF Accessibility Checker)

A very good tool to help you assess the quality of a tagged PDF is the free of charge PDF Accessibility Checker from the foundation "Access-for-all" in Switzerland.

Go to and download the free "PDF Accessibility Checker" (PAC 1.2)

PAC 1.2 is a Windows tool and is very self-explanatory. It detects a lot of issues that could go unnoticed otherwise. At the same time, like any other automated validation tool, it can only check certain aspects of a tagged PDF. A lot of aspects can only be tagged through visual and interactive inspection. But even here PAC is of huge help as it can create a stylized HTML based view of the document - while beauty is not its man strength it is a valuable tool to double check the content structure on the PDF side.