Level AA

Level AA rules

The 7 level AA checks Websight runs. Level AA is the target most laws and contracts name: contrast, zoom, target size, autofill and valid language codes.

Forms

AA The autocomplete attribute must use a valid value autocomplete-valid The autocomplete attribute tells the browser what kind of information a field collects: a given name, a postcode, an email address.

Colour

AA Text must have enough contrast with its background color-contrast Text needs enough difference in brightness from its background to be readable by people with low vision, or by anyone on a dim screen.

Keyboard and focus

AA Buttons and links must be big enough to press target-size Every control you can click or tap needs to be at least 24 by 24 CSS pixels, or have enough empty space around it that a 24 pixel circle centred on it does not touch a neighbour.

Language

AA Language codes on page sections must be valid valid-lang When part of a page is in a different language from the rest, put a lang attribute on that element.

Page title, frames and zoom

AA Do not block pinch zoom on phones meta-viewport The viewport meta tag tells phones how to scale the page. not run AA Do not lock the page to portrait or landscape css-orientation-lock Some sites decide they only work in landscape and use a media query to rotate the whole page 90 degrees when the phone is held upright, or show a please rotate your device overlay. AA Text spacing must not be locked with !important avoid-inline-spacing Some people with dyslexia or low vision read far better with wider line, letter or word spacing, and they apply it with a browser extension or a bookmarklet.

Level A rules

The other 63 checks.

WCAG 2.2 level AA criteria

Every level AA success criterion, including the ones only a person can check.

Scan your page against every level AA check

Free in Chrome, with a score and a plain-English fix per element.

Add Websight to Chrome

Free scans, no account, nothing leaves your computer. Automated tools find only part of the problems; the extension says so on every report.