PDF/UA Accessibility Checker
Drop a PDF below to check it for PDF/UA conformance (ISO 14289-1 and -2). Your file never leaves your browser. pdfa11y runs entirely in WebAssembly, no upload, no server.
Loading WebAssembly…
Drop a PDF above to see the accessibility report.
Drop a PDF above to see its structure tree.
Currently checked (…)
Loaded from the running WebAssembly module — always reflects what this build actually runs. Click a row for its explanation.
| ID | Category | Title | Severity |
|---|
Out of scope for any automatic checker
- Color contrast on rendered output
- Embedded files, Optional Content, Digital signatures, XFA
- Page-level interactive features
Always requires a human reviewer
- Whether alt-text is meaningful (not just present)
- Whether the structure tree's reading order matches the visual order
- Whether heading text actually describes the section that follows
- Whether the structure tree faithfully represents the document's semantics