What it does
The W3C Web Accessibility Initiative publishes accessibility standards, including the Web Content Accessibility Guidelines (WCAG), and supporting resources. Its material covers fundamentals, planning, design and development, evaluation, teaching and policy-related topics.
WAI is the primary reference for connecting an accessibility decision with its underlying standard. The homepage offers routes for designers, developers, evaluators, writers and managers, alongside introductory material.
For a particular requirement, open How to Meet WCAG. Its filters narrow the reference by WCAG version, conformance level, topic and technology. You can show relevant techniques and failures, then use Share this view to keep that filtered selection in a link. Individual criteria also have sharing links.
The WCAG standard defines requirements; the Understanding and Techniques documents explain them and show possible approaches. Those supporting documents do not introduce extra requirements. WCAG 3 draft material has a different status from the established WCAG standards.
The resources are free to read without an account. Reuse depends on the document: most WAI material allows redistribution with attribution but no modification, while resources marked with a Creative Commons licence may permit adaptation.
Strengths
- Standards and supporting materials come from their publishing organization.
- The quick reference filters requirements by version, level and technology.
- Filtered views and individual criteria can be shared by link.
Watch out for
- Most documents under the default WAI licence cannot be modified.
Best for
- Teams needing authoritative accessibility references and methods
- Designers and developers finding requirements for a particular interface
Sources
- Home | Web Accessibility Initiative (WAI) | W3C (Oct 27, 2026)
- Understanding the WCAG Documents (Oct 27, 2026)
- How to Meet WCAG (Quick Reference) (Oct 27, 2026)
- Using WAI Material: Permission to Use with Attribution (Oct 27, 2026)