WCAG

The WCAG (Web Content Accessibility Guidelines) are the international recommendations for the accessibility of web content, published by the W3C through its Web Accessibility Initiative.

They are the global reference. Most national regulations are based on them, including the French RGAA and the European standard EN 301 549.

Four principles

Perceivable

information must be perceivable through at least one available sense

Operable

the interface must be usable, including without a mouse

Understandable

content and operation must be intelligible

Robust

content must remain interpretable by assistive technologies, now and in future

Conformance levels

Level A is the minimum; level AA is the reference adopted by nearly all regulations; level AAA is rarely achievable across an entire site.

Versions

WCAG 2.0 (2008), also published as ISO/IEC 40500; WCAG 2.1 (2018); WCAG 2.2 (October 2023), the current version. WCAG 3.0 is under development.

See also

• Digital accessibility · RGAA · Human for IT