Making accessibility standards easy to understand, one success criterion at a time.

level: AAA

Level AAA is the highest level of compliance, making the most accommodations for the broadest range of people. It’s hard to achieve due to the number of rules and sometimes conflicting requirements. Successfully implement every success criterion under Level AAA, AA, and A to achieve this standard.

WCAG 2.0, 2.1, 2.2 Level AAA

2.4.9 Link Purpose (Link Only)

It is clear where a link will take you from the link text alone, without having to read the text around it.

Code and Labels, Wording
Cognitive, Visual
Code, Content, Design
WCAG 2.1, 2.2 Level AAA

2.5.5 Target Size (Enhanced)

Anything clickable should be at least 44 by 44 pixels, except links within a sentence which are okay to be the size of the text they encompass.

Gestures
Physical/Motor, Visual
Design
WCAG 2.1, 2.2 Level AAA

2.5.6 Concurrent Input Mechanisms

The user can happily switch between using a mouse, touchscreen, keyboard, or any other input device.

Gestures, Keyboard
Cognitive, Physical/Motor
Code
WCAG 2.0, 2.1, 2.2 Level AAA

3.1.3 Unusual Words

Jargon and figurative language is avoided, or, where not it’s possible, the words are defined or clarified the first time they’re used on a page.

Wording
Cognitive, Visual
Content
WCAG 2.0, 2.1, 2.2 Level AAA

3.1.4 Abbreviations

Acronyms and shortened words are avoided; where not that’s possible, a definition are provided on each page they’re used.

Wording
Cognitive, Visual
Content
WCAG 2.0, 2.1, 2.2 Level AAA

3.1.5 Reading Level

Writing is kept relatively simple, and is able to be understood by primary school children.

Wording
Cognitive, Visual
Content
WCAG 2.0, 2.1, 2.2 Level AAA

3.1.6 Pronunciation

If a word can be pronounced more than one way, and each way has a different meaning, the meaning is clarified to avoid ambiguity.

Wording
Cognitive, Visual
Content
WCAG 2.0, 2.1, 2.2 Level AAA

3.2.5 Change on Request

Nothing in the user interfaces changes without the user expressly requesting it using a

Forms, Keyboard
Cognitive, Visual
Code, Design
WCAG 2.0, 2.1, 2.2 Level AAA

3.3.5 Help

Where a label can’t provide enough information to understand what’s being asked, there’s hint text or some other kind of explanation alongside.

Forms, Wording
Cognitive
Code, Content, Design
WCAG 2.0, 2.1, 2.2 Level AAA

3.3.6 Error Prevention (All)

After entering any information, the user is offered the opportunity to check it before sending.

Forms, Wording
Cognitive, Physical/Motor
Code, Design