What You Get
A complete accessibility audit in seconds.
PDF/UA validation
Every "shall" statement in the PDF/UA-1 and PDF/UA-2 specifications is checked using veraPDF, the open-source industry-standard validator. You see exactly which rules pass and which fail.
Structure tag analysis
We map the complete tag tree of your document — headings, paragraphs, lists, tables, figures, and artifacts — and identify missing or incorrect tags.
Reading order check
The logical reading order is extracted from the tag tree and compared to the visual layout. Multi-column pages, sidebars, and headers/footers that break reading flow are flagged.
Alt text coverage
Every image in the document is checked for alternative text. Images without alt text are listed. Decorative images that should be marked as artifacts are identified.
Table structure
Data tables are checked for proper header cells, row/column scope, and spanning structure. Tables without headers or with ambiguous structure are flagged.
Font and text extraction
Fonts are checked for embedding and ToUnicode CMap entries. Missing CMaps mean screen readers and search engines can't extract text from the document.
Metadata and language
Document title, author, language declaration, and PDF/UA identifier are all checked. Missing language declarations are the most common WCAG failure in PDFs.
Compliance score
A per-document compliance score based on the ratio of passed to failed checks, broken down by category — structure, content, navigation, and metadata.
Under The Hood
Powered by veraPDF.
Our checker uses veraPDF, the open-source PDF/A and PDF/UA validator developed by the Open Preservation Foundation and the PDF Association. veraPDF formalizes every machine-verifiable "shall" statement from the PDF/UA-1, PDF/UA-2, and WTPDF specifications into executable validation rules.
This is the same tool used by national archives, government agencies, and accessibility testing organizations worldwide. It is not a heuristic scan — it is a specification-level conformance check.
How It Compares
More than a tag checker.
Most "PDF accessibility checkers" only inspect the tag tree — they confirm tags exist but don't validate correctness. Our checker goes further:
- Full PDF/UA validation — not just "are tags present?" but "do they conform to the ISO specification?"
- Screen reader simulation — we model how assistive technology would actually navigate the document, catching reading order issues that tag-only checks miss
- Before-and-after comparison — when used with our remediation service, you see the original validation results alongside the remediated results side by side
14 days until the ADA Title II deadline
By April 24, 2026, entities serving 50,000+ residents must make all digital content WCAG 2.1 AA compliant — including every PDF.
If you're a state or local government entity, the DOJ's ADA Title II final rule requires all your web content — including PDFs — to meet WCAG 2.1 AA. The first deadline is April 24, 2026 for entities serving 50,000+ residents. Start with a free scan to understand where you stand.