Start in the source document
Use proper headings, meaningful links, descriptive image alternatives and a logical reading order in the authoring application. Export with accessibility support where available and inspect the result with appropriate checking tools and real reading tasks.
Conversions can lose structure
Rasterizing pages, including this site’s image-based redaction and PDF-to-image conversions, removes selectable text and accessibility structure. OCR can recover an approximation of words but does not automatically restore semantic headings or correct reading order.
Check the result for the actual reader
Try keyboard navigation and text extraction, and test with the assistive technology your audience uses. These local utilities do not certify PDF/UA conformance. If accessibility is required for publication, keep the structured source and use a workflow with dedicated accessibility review.
Try the related tools
Further reading
Updated 2026-10-18. These are implementation notes and practical explanations, not a conformance certificate.