Web Content Accessibility Guidelines (WCAG) is a recommendation published by theWeb Accessibility Initiative (WAI) group at theW3C, outlining a set of guidelines for making contentaccessible primarily for people with disabilities, but also for limited-resource devices and services, such as digital assistants.

WCAG 2 consists of 13 guidelines organized under 4 principles (perceivable, operable, understandable, and robust) and each guideline has testable success criteria.

WCAG 2 uses three levels of conformance:

• Priority 1: Web developersmust satisfy these requirements, otherwise it will be impossible for one or more groups to access the Web content. Conformance to this level is described as A.
• Priority 2: Web developersshould satisfy these requirements, otherwise some groups will find it difficult to access the Web content. Conformance to this level is described as AA or Double-A.
• Priority 3: Web developersmay satisfy these requirements, in order to make it easier for some groups to access the Web content. Conformance to this level is described as AAA or Triple-A.

WCAG 2.2 was published on Oct, 2023 andWCAG 3.0 is in development.

See also

• Understanding the Web Content Accessibility Guidelines
• WCAG on Wikipedia
• Web Content Accessibility Guidelines (WCAG) 2.2: Recommendation
• W3C Accessibility Guidelines (WCAG) 3.0: Working Draft
• Glossary
  • Accessibility
  • WAI
  • ATAG
  • UAAG