How to Fix Common PDF Accessibility Errors

1. Run a diagnostic accessibility check

The first pass should identify blocking issues and the affected pages or elements. Useful reports separate file-level problems such as missing tags from content-level issues such as missing alt text, table headers, or confusing reading order.

2. Use AI PDF remediation where safe

AI PDF remediation is useful for common patterns: adding a tag tree, assigning paragraph and heading roles, setting title and language metadata, detecting basic tables, and writing straightforward figure alt text. The workflow should still preserve the original text, avoid damaging visual layout, and route uncertain content to review.

• ✓Create or repair tags
• ✓Set title and language
• ✓Repair heading roles
• ✓Attach alt text to the correct figure
• ✓Preserve extracted text fidelity

3. Use manual review for ambiguous content

Complex tables, charts, scanned pages, layered graphics, and ambiguous reading order often need a human. Manual edits should change the exported PDF where feasible, not only update a score in the UI.

4. Re-check the exact exported artifact

Do not treat the upload report as proof that the final download is fixed. The corrected export should be opened and checked as the artifact users will publish or archive.

What to verify before publishing

1. 1Run a checker and save the issue list
2. 2Fix file-level metadata first
3. 3Repair tags, headings, and reading order
4. 4Add meaningful alt text for figures
5. 5Review tables and forms manually when needed
6. 6Re-check the exported PDF before publishing

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