What is the difference between PDF/UA and WCAG accessibility standards?

PDF/UA (ISO 14289) is a technical standard specifically for PDF file structure, while WCAG covers broader web content accessibility. They overlap significantly and our tool checks conformance with both.

Can I make a scanned image-only PDF accessible?

Image-only PDFs need OCR processing first to create a text layer before accessibility tags can be applied. Use our PDF OCR tool as the first step, then run the accessibility check.

Does the tool fix all accessibility issues automatically?

It resolves the most common structural issues automatically. Complex tables, decorative image decisions, and nuanced reading order cases may require a brief manual review.

Will this guarantee legal compliance with accessibility laws?

The tool aligns your document with recognised technical standards, which is the foundation for compliance. For formal legal sign-off, consider having an accessibility specialist review the output.

Are my uploaded files kept private?

All transfers use 256-bit SSL and files are deleted automatically from our servers once your session ends. Nothing is retained or analysed beyond the processing task.

Does adding accessibility tags increase the file size noticeably?

The structural tag data adds only a small amount to the file size, typically a few kilobytes. In practice the difference is negligible for most documents.

Can I check a PDF that already has some accessibility tags?

Yes. The scan identifies which elements are already tagged correctly and highlights only what is missing or incorrect, so you do not have to redo compliant sections.

PDF accessibility (WCAG/PDF-UA) — Free Online

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Upload a PDF to check accessibility

Scans tagging, title, language, and image alt text

♿ Why does this matter?

WCAG 2.1 AA — a legal requirement for government, education, and healthcare sites.
PDF/UA — the ISO 14289 standard for Universal Accessibility in PDFs.
Blind and low-vision users read PDFs with screen readers (NVDA, JAWS, VoiceOver) — and those require a properly tagged PDF.

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PDF Accessibility (WCAG / PDF-UA) Checker

Upload a PDF to check accessibility

♿ Why does this matter?

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