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PDF Accessibility Preflight & Guided Fixer

Check and Improve PDF Accessibility Online: find PDF accessibility barriers before you publish.

Turn a PDF/UA machine check into a page-based worklist with only safe, confirmed fixes.

START HEREChoose PDFPDF
Choose PDF Try prepared example
Maximum
1 file · 50 MB · 250 pages · 15 minutes
File handling
Draft 2 hours · result 24 hours
FREE3 jobs a dayFiles up to 10 MB
PROUp to 200 jobs a day€12.99/month or €89.99/year
See plans

Larger files need Pro. Failed jobs are never counted.

  • Prepared example is free
  • 3 free jobs a day
  • Cancel anytime
EXAMPLE RESULTSample data
PDF/UA machine check
62
No document language
Untagged tables4
✓ 2 guided safe fixes ready
Page evidence · revalidated copy
Machine findings become a page-based repair planAutomated health report — not a compliance certificate
Automated score
62 / 100
Priority findings
9
Guided safe fixes
2
Formats, limits & file handling
Works with
PDF
Limit
1 file · 50 MB · 250 pages · 15 minutes
You receive
Accessible HTML, PDF/UA executive PDF, CSV, JSON, manifest and optional guided-fixed PDF
File handling
Draft 2 hours · result 24 hours

Upload one PDF in the protected app to receive a deterministic, page-based PDF/UA worklist. Safe changes are always optional and require your confirmation. Automated checks are not a compliance certificate.

THREE CLEAR STEPS

From your documents to a usable result.

  1. 01
    Add your input

    Limits and supported formats are visible before you begin.

  2. 02
    Review the result

    Check the preview, findings or artwork before you download.

  3. 03
    Download

    Use your free job, plan or credits. Failed jobs are never counted.

Interactive synthetic preflight

See what the machine can prove—and what a person must decide.

Review a fictional public report. Nothing is uploaded.

✓
No public uploadSynthetic PDF findings only
62/ 100

Automated PDF accessibility health scoreNot a compliance certificate

3Urgent
4Important
7Pages affected
Urgent · StructureNo document tag tree

Screen readers cannot reliably determine reading order or document structure. Rebuild this in the source authoring tool.

Human repair required · not auto-fixed
Important · MetadataDocument language is missing

Assistive technology cannot select the correct pronunciation rules.

Important · ImagesTwo existing Figure tags have no alternative text

A person must describe the purpose of each figure before the existing tags can be updated.

Meaning requires human input

Preflight first, repair only with evidence

A short path from PDF to a realistic worklist

  1. Add one PDF.Choose PDF/UA-1 or PDF/UA-2. Password-protected, damaged and active portfolio files are blocked.
  2. Run deterministic checks.Pinned veraPDF and local inspection check machine-verifiable structure, metadata, figures, forms and document behaviour.
  3. Review by impact and page.Every finding explains the barrier, affected users, evidence and recommended next action.
  4. Confirm only safe changes.Metadata and values attached to existing tags can be edited. Reading order, tag trees, table semantics and alternative-text meaning are never guessed.
  5. Revalidate the separate copy.The optional guided-fixed PDF is checked again with the same pinned profile. The ZIP then verifies every member against its byte size and SHA-256 manifest record.

Manual review stays separate

Logical reading order, meaningful alternative text, heading hierarchy, table interpretation, link purpose and keyboard behaviour require a person. They never inflate the automated score.

Does this certify that a PDF is accessible?

No. It reports machine-verifiable checks and a separate manual-review list. Human review is still required.

Can the tool create a missing tag tree?

No. It never invents reading order, headings, tables or a tag tree. Those structural repairs require an authoring tool and human judgment.

Which fixes can be applied?

Only explicitly confirmed document title, language, display-title preference, tab order for an existing tag tree, bookmarks, figure alternative text on existing Figure tags and tooltips on existing form fields.

What happens to signed PDFs?

Signed PDFs are report-only, because any edit would invalidate the signature. You receive the findings without a modified file.

What is included in the result package?

Accessible HTML, a separately validated PDF/UA executive summary, a protected CSV, technical JSON, a manifest and the optional guided-fixed PDF.