WCAG: accessibility guidance
The Web Content Accessibility Guidelines define success criteria organized around content being perceivable, operable, understandable, and robust. WCAG has versions and conformance levels; a project should identify the specific target rather than use “WCAG compliant” without qualification.
PDF/UA: PDF-specific requirements
PDF/UA addresses accessibility in PDF files. Its requirements go beyond a file’s appearance. Our automated pilot records a PDF/UA-1 machine-check result; that result does not establish all human-checkable requirements or every other accessibility obligation.
Section 508: a U.S. federal context
Section 508 concerns accessible information and communication technology in the U.S. federal context. Section508.gov provides PDF authoring, testing, and remediation resources. Which requirements apply to a particular organization or contract must be established for that project.
Explore the source guidance
These guides introduce the topic. Agree on the specific document requirements and review scope for your project.