Free PDF accessibility checker.
Upload a PDF and see its WCAG 2.2 AA / PDF/UA status, machine-verified with veraPDF (opens in new tab). No signup.
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Note: a passing machine check is necessary but not sufficient. Roughly 47 conditions in the Matterhorn Protocol, such as whether alt text actually describes the image, whether the reading order makes sense, and whether headings are real, still need human review. That’s exactly what our PDF remediation includes.
Need these issues fixed?
Auto-Flow can remediate and verify them: tagged to PDF/UA, checked in Acrobat and veraPDF, and tested with a screen reader. One file or a backlog of thousands.