PDF Accessibility Checker
Check document language, title, tags, bookmarks, image alternative text and probable reading-order issues.
PDF Accessibility Checker online, free and private
Accessibility preflight identifies common structural gaps before a PDF is shared: missing language or title, absent tags and bookmarks, image objects without reliable structure, non-searchable pages and probable reading-order anomalies.
The complete workflow runs locally in your browser. Your source file is not sent to PDFToolz or stored on a server.
How to pdf accessibility checker in your browser
- 1
Add your source
Choose a local file or use the direct-input controls shown in the workspace.
- 2
Review the options
The checker analyses the PDF catalog, page resources and extracted text, then produces a machine-readable JSON report.
- 3
Run the preflight
Run the tool, review the completion summary, then save the generated file or report to your device.
Why use PDFToolz for this
On-device processing
PDF parsing, rendering and export happen in browser memory, without an upload step.
Clear scope
Automated heuristics cannot establish WCAG or PDF/UA conformance. Verify semantics, reading order, alternative text and screen-reader behaviour manually.
No account required
Use the tool without signup, a trial, a watermark or a server-side file quota.
Built for real documents
Progress feedback, device-memory limits and output descriptions make the result predictable before download.