PDF Validation
Industry-Standard PDF/UA & WCAG Compliance Testing
PDF Validation ensures your documents meet accessibility and compliance standards – making PDFs readable, navigable, and inclusive for everyone.
Validate, Test & Verify PDF Accessibility with Industry-Trusted Tools
Ensure your PDFs meet PDF/UA-1, PDF/UA-2, and WCAG 2.2 accessibility standards with automated validation powered by veraPDF – the industry-standard, open-source validator trusted by governments, enterprises, and accessibility professionals worldwide.
Get audit-ready validation reports in seconds – complete compliance confidence.
What is PDF Validation and Why Does It Matter?
PDF validation is the automated process of testing PDF documents against technical accessibility standards to verify compliance with PDF/UA (Universal Accessibility) and WCAG (Web Content Accessibility Guidelines).
Legal Compliance Requirements
Accessible PDFs are legally required for:
- ADA Title II for U.S. Government and public services
- ADA Title II for Higher Education
- Section 508
- European Accessibility Act
- WCAG 2.2 Level AA
- PDF/UA
Free PDF Accessibility Checker
PDFix Desktop Lite: Validate PDF/UA in Seconds
PDFix Desktop Lite is a free, professional-grade PDF accessibility checker that validates PDF/UA and WCAG conformance.
It analyzes accessibility errors, validates document batches, and generates compliance reports – all powered by the industry-standard veraPDF validator.
Why PDF Validation Matters
Accessible PDFs are essential for:
- Legal compliance (PDF/UA, WCAG 2.2)
- Inclusive access for all users
- Accurate tagging and structure
- Improved usability across assistive tech
- Reduced remediation costs
Goal: Not just “pass every check” – but create genuinely accessible PDFs that work for everyone.
PDF Accessibility Validation and Compliance Guide
Explore how leading PDF/UA-1 accessibility checkers analyze and report compliance issues to help you achieve PDF/UA and WCAG accessibility standards.
- Compare veraPDF, PAC, Adobe Preflight, and CommonLook Validator side by side
- See how each tool identifies different PDF accessibility errors
- Understand why validation results may vary between checkers
- Learn how to interpret validator reports with clarity and confidence
💡TIP: Combine multiple validators for the most accurate and reliable PDF validation.
👉 Learn more in our blog post on PDF/UA-1 Accessibility Validator Comparison
Webinar: Checking PDF Accessibility with PDFix
Watch our Free Webinar on PDF Validation and learn how to check PDF accessibility with PDFix.
Learn How to Check PDF for Accessibility with PDFix Desktop Lite
Frequently Asked Questions
How can I check if my PDF is accessible?
You can use PDFix Desktop Lite, a free accessibility checker powered by veraPDF, to analyze your document. It validates structure, tagging, and reading order, and generates a detailed report showing any accessibility issues and how to fix them.
What are the best tools to validate PDF/UA compliance?
The most reliable PDF/UA validators include veraPDF, PAC (PDF Accessibility Checker), Adobe Preflight, and CommonLook Validator.
For the best results, use multiple tools together, since each validator may detect different issues or interpret rules slightly differently.
Is there a free PDF/UA accessibility checker for macOS?
Yes — PDFix Desktop Lite is the only free PDF accessibility validator available for macOS. It provides full PDF/UA validation, HTML preview, and detailed accessibility reports.
Where can I learn more about PDF accessibility validation?
Check out our in-depth blog post PDF/UA-1 Accessibility Validator Comparison to see how different tools analyze the same PDF and how to interpret results effectively.
What is the Matterhorn Protocol in PDF validation?
The Matterhorn Protocol defines a detailed list of technical checks required for PDF/UA compliance. It helps validators, like PDFix and veraPDF, perform consistent accessibility testing and report precise errors across all documents.
For Windows, Linux and macOS
Desktop Lite
Free PDF viewer and accessibility checker with built-in veraPDF validation, supporting multiple compliance profiles and direct navigation to detected issues.
Desktop Pro
All-in-one automated PDF accessibility solution for PDF/UA and WCAG compliance, aligned with ADA, Section 508, and European accessibility regulations.
SDK
Enterprise PDF accessibility SDK for integrating automated tagging, remediation, and validation into scalable document workflows across US and EU requirements.
Disclaimer: PDFix provides tools and technology to assist in making your documents accessible, but we do not guarantee 100% document accessibility. Achieving full compliance requires human checks and intervention. Please note that PDFix is a technology provider, not a service provider. The responsibility for document compliance rests with the user.
