Definition
Section 508
The US law requiring federal agencies — and through procurement, their vendors — to make electronic content accessible. The Revised 508 Standards incorporate WCAG 2.0 AA for documents, PDFs included.
508's reach extends past government: deliverables, proposals, and grant outputs get 508-checked at intake, making tagged, verified PDFs a vendor competence. Reviews start with automated checks — the layer remediation tools fix directly.
Related tools & guides
Check whether your PDF is accessible
Ceereo audits any born-digital PDF against PDF/UA and WCAG machine checks for free, then writes the missing accessibility layer into the same file. The document looks exactly the same afterwards.