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PDF accessibility checker.
Paste the address of any PDF and find out whether a screen reader can read it at all. Fourteen checks against PDF/UA — starting with the one that decides everything else.
Tagged is the whole ballgame
An untagged PDF is a picture of a document. No headings, no reading order, no table semantics — a screen reader gets almost nothing. Most PDFs published on public sector and healthcare sites are untagged, and that single fact matters more than everything else on this page combined. What we check is that the structural machinery exists. Whether it was used well — reading order, whether alt text actually describes the image — needs a person, and those are listed below.
The file must be publicly reachable. Up to 15 MB.
This reads the PDF file structure. A clean result means the accessibility machinery is present, not that the document is usable — a fully tagged PDF can still have a scrambled reading order and useless alt text. Treat it as a first gate, not a verdict.
Find out what's broken.
Then actually fix it.
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