WCAG 2.1 Quick Reference

All success criteria at a glance with descriptions

Level:
All A AA
Category:
All Perceivable Operable Understandable Robust
5 criteria | Level A: 0 Level AA: 5
3.1.2 Level AA Understandable

Language of Parts

The human language of each passage or phrase in the content can be programmatically determined.

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3.2.3 Level AA Understandable

Consistent Navigation

Navigational mechanisms that are repeated on multiple web pages occur in the same relative order.

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3.2.4 Level AA Understandable

Consistent Identification

Components that have the same functionality within a set of web pages are identified consistently.

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3.3.3 Level AA Understandable

Error Suggestion

If an input error is detected and suggestions for correction are known, then the suggestions are provided to the user.

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3.3.4 Level AA Understandable

Error Prevention (Legal, Financial, Data)

For web pages that cause legal commitments or financial transactions, submissions are reversible, checked, or confirmed.

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