Structure
Tags and reading order
Whether the document has a tag tree, and whether that tree matches the reading order a sighted person sees on the page.
Free tool
PDF accessibility checker
Upload a PDF and get a clear view of whether it works for people using assistive technology.
- Four checks: tagged structure, alt text, document language, document title.
- Results in a few seconds. No account needed.
- Checks four core areas aligned with WCAG 2.2 AA and PDF/UA.
Analyze your PDF free
How does it work
What gets checked
Twenty automated checks derived from WCAG 2.2 AA and PDF/UA, grouped into the four things that decide whether a document can actually be used with assistive technology.
Images
Alternative text
Every image, chart, and logo either describes itself in words or is correctly marked as decorative.
Content
Tables, lists, and links
Header rows on data tables, real list markup instead of dashes, and link text that makes sense on its own.
Metadata
Title and language
A meaningful title set in the document's properties, and a declared language so screen readers pronounce it correctly.
Fix these issues before you publish, not after.
This tool checks one file at a time. Siteimprove monitors every document across your site, tells you which ones people actually download, and shows your team how to fix them.
Checking your document
This usually takes a few seconds.
- {{ label }}
Your results
{{ resultError }}
{{ meta.filename }}
CRITICAL
{{ score.critical }}Blocking issues
WARNING
{{ score.warning }}Blocking issues
PASSED
{{ score.passed }}out of {{ score.totalChecks }} checks
Issues on this page
Page {{ currentPageNumber }} of {{ totalPages }}
-
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{{ issue.critical ? 'Critical' : 'Warning' }}
No page-specific issues were found.
No issues detected!
This document passes every automated check we ran.
Document-wide
- {{ row.title }} {{ row.status === 'passed' ? 'Passed' : row.status === 'critical' ? 'Critical' : 'Warning' }}
Document preview
{{ previewStatus }}
Critical
Warning
Full page