Free PDF Accessibility Checker
Instantly audit any PDF for WCAG 2.1 AA, PDF/UA-1, and Section 508 compliance issues. Sign up free and get a detailed report in seconds.
Free to sign up. Your file is processed securely and never stored.
Three steps to a complete accessibility audit
No software to install. Create a free account, upload your PDF, and get actionable results immediately.
Upload
Drag and drop your PDF or click to browse. Files are transmitted over HTTPS and processed in an isolated environment.
Analyze
Our engine inspects the PDF's tag structure, images, reading order, metadata, headings, tables, and links against accessibility standards.
Get Report
Receive a detailed, issue-by-issue report showing exactly what passed, what failed, and how to fix each problem.
A comprehensive accessibility audit, not a surface scan
We test for the issues that actually cause screen readers, assistive technology, and compliance auditors to flag your PDFs.
Tag structure
Verifies that the PDF has a complete, logical tag tree with correct nesting and role mappings.
Alt text
Checks that every image and figure has meaningful alternative text, and flags decorative images missing artifact tagging.
Reading order
Validates that content flows in the correct logical sequence, especially in multi-column layouts and complex designs.
Headings
Ensures heading levels are properly nested (H1 through H6) and that the document outline is navigable.
Tables
Confirms that data tables have proper header cells, scope attributes, and summary information for screen reader navigation.
Language
Detects whether the document language is set and whether language changes within the content are properly marked.
Bookmarks
Checks for a bookmark tree that mirrors the document's heading structure, enabling quick navigation in long PDFs.
Tested against every major accessibility standard
Our checker validates your PDF against all three standards simultaneously and tells you exactly where each one fails.
Web Content Accessibility Guidelines
The international benchmark for digital accessibility. We test every applicable Level AA success criterion for document content.
ISO 14289-1
The ISO standard dedicated to PDF accessibility. We verify tag structure, role mappings, and metadata requirements specific to PDF/UA.
U.S. Federal Accessibility Law
Mandatory for federal agencies and contractors. Our report maps each issue to the relevant 508 requirement for straightforward compliance.
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