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The highest level of accessibility conformance. Level AAA represents the gold standard for web accessibility with 31 enhanced success criteria.
Level AAA is the highest level of WCAG conformance. While not required for entire websites, achieving AAA for specific content demonstrates exceptional commitment to accessibility.
Sign language interpretation is provided for all prerecorded audio content.
Extended audio description is provided when regular audio description is insufficient.
A text alternative is provided for all prerecorded synchronized media.
A text alternative is provided for live audio-only content.
The purpose of User Interface Components can be programmatically determined.
Text has a contrast ratio of at least 7:1 (4.5:1 for large text).
Audio content has no background sounds or they can be turned off.
Text content presentation can be adjusted by the user.
Images of text are only used for decoration or where essential.
All functionality is available from a keyboard interface without exception.
Timing is not an essential part of the event or activity.
Interruptions can be postponed or suppressed by the user.
User data is preserved when a session expires and re-authentication is required.
Users are warned of the duration of inactivity that could cause data loss.
Web pages do not contain anything that flashes more than three times per second.
Motion animation triggered by interaction can be disabled.
Section headings are used to organize the content.
When a component receives keyboard focus, no part of it is hidden.
The focus indicator has sufficient size and contrast.
Information about the user's location within a set of pages is available.
The purpose of each link can be identified from the link text alone.
Target size is at least 44 by 44 CSS pixels except in specific cases.
Content does not restrict use of input modalities.
A mechanism is available for identifying specific definitions of words.
A mechanism for identifying the expanded form of abbreviations is available.
Text requires reading ability no higher than lower secondary education level.
A mechanism is available for identifying pronunciation of words.
Changes of context are initiated only by user request.
Context-sensitive help is available.
All user input can be checked and confirmed before submission.
Authentication methods don't rely on cognitive function tests.