A11y
WCAG 2.2Visual, hands-on explanations of W3C/WAI accessibility standards. Each criterion comes with an interactive comparison between non-conforming and conforming patterns.
The four principles of WCAG 2.2
- Principle 1 17 criteria
Perceivable
Information and UI components must be presented in ways users can perceive.
- Principle 2 20 criteria
Operable
User interface components and navigation must be operable.
- Principle 3 13 criteria
Understandable
Information and the operation of UI must be understandable.
- Principle 4 2 criteria
Robust
Content must be robust enough to be reliably interpreted by a wide variety of user agents, including assistive technologies.
WAI-ARIA 1.2
A specification that defines roles, states, and properties so assistive technologies can correctly interpret web content.
ATAG 2.0
Guidelines covering both the accessibility of authoring tools (CMS, editors, etc.) themselves and how those tools support producing accessible content.
Other standards
Related W3C/WAI specifications and tools.