What the audit checks

Every audit runs these checks on the rendered page in a real browser. Each finding is tied to a WCAG 2.2 criterion.

Ten checks, one audit

Open a check to see what it finds, what a failure looks like in code, and what still needs a person to test.

Checks in the audit and the WCAG criteria they cover
Check	What it finds	WCAG
Alt text	Finds images, icons and image buttons with missing or empty text alternatives, and alt text that says nothing useful.	1.1.1, 1.4.5
Color contrast	Measures text and control colors on the rendered page against the WCAG 2.2 AA ratios, and flags links that differ from text by color alone.	1.4.3, 1.4.11, 1.4.1
Keyboard and focus	Finds controls people can't reach by keyboard, focus styles that were removed, and focused elements hidden behind sticky headers.	2.1.1, 2.1.2, 2.4.3, 2.4.7, 2.4.11
Form labels	Finds inputs without labels, placeholders used as the only label, and fields that don't say what they collect.	3.3.2, 1.3.1, 1.3.5, 4.1.2
Headings and landmarks	Checks that pages have a clear heading outline, a main landmark and a way to skip repeated navigation.	1.3.1, 2.4.1, 2.4.6
Link text	Finds links with no accessible name, vague text like "click here", and links that open new windows without warning.	2.4.4
ARIA	Finds invalid roles and attributes, controls with no accessible name and ARIA that hides content people need.	4.1.2
Page language and title	Checks that each page declares its language, marks passages in other languages and has a title.	3.1.1, 3.1.2, 2.4.2
Data tables	Checks that data tables mark header cells, connect cells to their headers and have a caption or name.	1.3.1
Target size	Measures buttons, links and icons on the rendered page against the WCAG 2.2 minimum of 24 by 24 pixels.	2.5.8

Automated checks find many failures, but some WCAG criteria need a person. The checklist shows which is which for every WCAG 2.2 A and AA criterion.

WCAG 2.2 AA checklist
All 55 criteria, marked automated, partly automated or needs a person.
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