PDF Accessibility Checker Online for Free
Check a PDF against core accessibility basics — no upload, no signup, up to 100 MB.
Your file never leaves your deviceDrag & drop your PDF here
or Max 100 MB · Free · Processed entirely in your browserHow to Check a PDF's Accessibility
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Upload your PDF Drag & drop or browse your PDF.
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Confirm No settings needed — we run every check automatically.
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Review the results See what passed and what needs attention, right in your browser.
Know where your PDF stands
- Private by designYour PDF is processed on your device and never uploaded.
- InstantNo upload queue — your browser does the work locally.
- Free, no signupNo account, no credit card, no trial that expires.
- Six core checksTitle, language, tagging, image alt text, form labels, and scanned pages.
- Plain-language resultsKnow exactly what to fix, not just a pass/fail score.
Frequently Asked Questions
Is it free?
Yes. No signup required.
Is my file safe?
Yes — your PDF is processed entirely in your browser and never uploaded.
What does this check?
Six core basics: document title, document language, tagged structure, image alt text, form field labels, and whether the PDF looks scanned or image-only.
Is this a full PDF/UA or WCAG conformance check?
No — it checks structural basics that matter most for screen readers, not a complete conformance audit. Things like color contrast and reading order aren't checked. Passing every check here is a good sign, not a compliance guarantee.
What does "not tagged" mean, and why does it matter?
A tagged PDF has an internal structure that tells screen readers what's a heading, paragraph, image, or table. Without it, a screen reader often can't make sense of the page at all — it's usually the single biggest accessibility issue a PDF can have.
What if my PDF looks scanned or image-only?
Screen readers can't read text trapped in an image. Run it through OCR PDF first to add a searchable, readable text layer.
Max file size?
100 MB.