PDF Accessibility Checker (PAC) 2021

Free PDF/UA checker

The PDF Accessibility Checker (PAC) is a freeware for PDF accessibility testing hosted by the PDF/UA Foundation. With PAC - the worldwide first ISO 14289-1 (PDF/UA) validator - it is possible to evaluate the PDF/UA compliance of your accessible PDFs.

The features:

  • a PDF/UA-check with all machine-testable checkpoints of the matterhorn protocol
  • a WCAG-check with all machine-testable checkpoints of the Web Content Accessibility Guidelines (WCAG) 2.1
  • a screenreader preview for evaluating the logical document structure visually
  • a view of the tag tree with all properties and attributes
  • statistics concerning the document structure
  • a printable summary report

Download PAC

Download the newest version: PAC 2021 (only for Windows) - available as Public Beta:

Download older versions that were hosted by the Swiss Foundation "Access for All":

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