Master PDF Accessibility Validation with veraPDF – The Industry-Supported Open-Source Validator
Validate PDFs the right way. Join the experts behind PDFix to explore veraPDF — the only open-source PDF/UA and PDF/A validator trusted and supported by the digital preservation community. Learn how to install veraPDF, choose the right validation profiles, run batch accessibility checks, interpret validation results, and correct accessibility issues using PDFix.
📅 Date: December 11, 2025
🕑 Time: 5 pm CET
Why you should attend
If your work involves PDF accessibility and compliance validation, you’ve likely encountered conflicting tools and inconsistent results. This session cuts through the confusion.
VeraPDF is the only open-source validator recognized by the industry and maintained under the Open Preservation Foundation and aligned with the PDF Association’s PDF/A Technical Working Group, which continuously clarifies ambiguities discovered through real-world use.
This webinar will show you exactly why veraPDF matters, and how to use it correctly.
Why veraPDF
- Learn why we built our solution around independent, third-party PDF validation — and why open, standards-based verification is essential for trustworthy accessibility and conformance testing
- See how PDF/UA-1 validation results differ across major accessibility checkers — and why independent validation matters
How veraPDF
- See, step-by-step, how to:
- install veraPDF
- run validations
- interpret results with confidence
- Leave the session knowing what to validate, how to verify compliance, and how to trust your results
How to get started with veraPDF
- Install veraPDF (CLI, Docker, or desktop UI), or use the veraPDF Web Demonstrator
- Run and interpret checks against PDF/UA validation profiles
- Understand validation reports including Matterhorn Protocol machine failure conditions
- Batch-validate documents and export structured reports
How to fix validation errors with PDFix
- Use veraPDF validation in PDFix products, or use the pdfix.io
- Fix validation issues with PDFix Desktop and PDFix SDK
- Batch-fix documents
Why PDFix – PDF Accessibility Expertise You Can Trust
- 25+ years of expertise in PDF technology and accessibility
- Contributor to industry standards for PDF/UA compliance
- Proven solutions to automate PDF accessibility workflows
- Trusted by banks, governments, and global enterprises
- Helping organizations meet WCAG and PDF/UA compliance faster and at scale
Trusted by Leading Organizations
Jabil
Johns Hopkins University
Board of Governors of the Federal Reserve System
Prime Therapeutics LLC
U.S. Citizenship and Immigration Services
ENAV S.p.A.
Deutsche Bank
Anzu Medical
Frequently Asked Questions
What is veraPDF?
veraPDF is an open-source PDF validator covering all parts of the PDF/A and PDF/UA (Matterhorn Protocol Machine failure conditions) standards. Originally funded by the PREFORMA project, veraPDF has been sustained and maintained by the Open Preservation Foundation since 2017. Dual Lab provides active user support and carries out maintenance and bug fixes. The PDF Association’s PDF/A Technical Working Group continues its role in resolving ambiguities arising from veraPDF’s usage in the field.
Is veraPDF suitable for accessibility teams?
Yes. It is industry supported open-source standard with active maintenance and PDF community governance. It validates PDF/UA requirements, highlights common tagging and structure errors, and produces validation reports you can trust. See the full list of PDF/UA validation profiles.
Where do I get the PDF validation reports?
veraPDF outputs HTML, XML, or JSON with detailed findings, errors, and fail summaries.
Where can I try the veraPDF validator online?
Use the veraPDF Web Demonstrator or the PDFix online validator (pdfix.io) to run PDF/UA checks directly in your browse.
Is veraPDF a free PDF accessibility checker?
Yes. veraPDF is free and open-source – you can download it, use it, and modify it to meet your needs.
What if there is an error in veraPDF validation?
If you encounter a validation result that appears incorrect, we encourage you to report it on the veraPDF GitHub issue tracker or reach out to the Open Preservation Foundation. Community feedback is essential to improving veraPDF. You can also volunteer your time and expertise by contributing to the software and documentation via GitHub (https://github.com/veraPDF)
