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POUR

The four WCAG principles, perceivable, operable, understandable, and robust, remembered by their first letters.

Also called
perceivable, operable, understandable, robust

POUR is the memory aid for the four principles at the top of WCAG. The standard says these principles provide the foundation for web accessibility: perceivable, operable, understandable, and robust.

Perceivable: people can take content in with the senses they have, so images are described and video is captioned. Operable: people can work every control, whether by mouse, keyboard, switch, or voice. Understandable: the words, layout, and behavior make sense and stay consistent. Robust: the page works with current and future browsers and assistive technologies. Every success criterion sits under one of the four, and the EU’s Web Accessibility Directive and the UK regulations use the same four words to define their requirement.

Source

Web Content Accessibility Guidelines (WCAG) 2.2

World Wide Web Consortium (W3C), 2024. Checked .

WCAG
The Web Content Accessibility Guidelines, the international standard for accessible web content that most laws point at.
Success criterion
One testable requirement in WCAG, with a number, a level, and a plain statement of what must be true.
Web Accessibility Directive
The EU law requiring public sector websites and apps to be accessible, with a statement and a way to report problems.

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