The PDF Accessibility Checker (PAC) 2 is a freeware of the Swiss foundation "Access for all" for PDF accessibility testing.
- a PDF/UA-check with all machine-testable checkpoints of the matterhorn protocol
- 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
With PAC 2 - the worldwide first ISO 14289-1 (PDF/UA) validator - it is possible to evaluate the PDF/UA compliance of your accessible PDFs.
Download the newest version (only for Windows):