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WCAG & PDF/UA Checks

Scans for compliance with WCAG 2.1 guidelines and PDF/UA (ISO 14289) standards used by governments and institutions.

Detailed Report

Each issue is listed with its severity, affected element, and a description of what to fix. Actionable and specific.

Browser-Based Analysis

Your PDF is analyzed entirely in your browser. The document is never uploaded to a server.

How to PDF Accessibility Checker Online

  1. 1

    Open the PDFlys Accessibility Checker and upload your PDF.

  2. 2

    Click Check to scan the document for accessibility issues.

  3. 3

    Review the list of issues, grouped by severity (error, warning, info).

  4. 4

    Read the description and recommendation for each issue.

  5. 5

    Fix the identified issues using your PDF authoring tool and re-check.

FAQ

What accessibility standards does it check?▾
The checker evaluates against WCAG 2.1 (Web Content Accessibility Guidelines) and PDF/UA (ISO 14289), which are the standards required by most government agencies and institutions.
What issues does it detect?▾
Common issues include missing document title, missing alt text on images, incorrect reading order, missing language declaration, poor heading structure, and insufficient color contrast.
Can it fix accessibility issues automatically?▾
The checker identifies and reports issues but does not modify your PDF. You will need to fix the issues in your PDF authoring tool (Word, InDesign, Acrobat) and re-check.
Is my PDF uploaded to a server?▾
No. The accessibility analysis runs entirely in your browser. Your document stays on your device.
Who needs accessible PDFs?▾
Government agencies, educational institutions, healthcare organizations, and any entity subject to ADA, Section 508, or EU accessibility directives must publish accessible documents. It is also good practice for any public-facing content.

Related Resources

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Side-by-side comparison of 6 accessibility tools — features, pricing, and standards.

Acrobat Pro vs PDFlys

Full cost-of-ownership breakdown for accessibility compliance.