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Accessibility: WCAG 2.2, levels A, AA and AAA
The 55 criteria of levels A and AA are law and the basis of the seal; the 31 criteria of level AAA go beyond that and stand next to their neighbours. Every subtopic leads to its criteria, every criterion to its article; the list of all 86 criteria with level is in the column on the left.
Images and graphics
Every image bears its text, and text stands as text, not as image.
3 criteria, level A, AA, AAA
Audio and video
Subtitles, audio description, transcript and sign language: sound and image for all senses.
9 criteria, level A, AA, AAA
Headings, tables and order
What the eye sees as an outline is also in the source text as an outline.
4 criteria, level A, AA, AAA
Colour and contrast
Text remains readable, and color is never the only statement.
5 criteria, level A, AA, AAA
Text size, zoom and orientation
The page tolerates 200 percent, wide distances, 320 pixels wide and any device layer.
5 criteria, level AA, AAA
Keyboard and focus
Everything goes without a mouse, and you always see where you are.
10 criteria, level A, AA, AAA
Time and interruptions
Deadlines can be extended or missing, inputs survive a session, nothing urges.
5 criteria, level A, AAA
Movement, blinking and sound
Nothing flashes, nothing runs without a break, nothing plays unasked.
6 criteria, level A, AAA
Navigation, orientation and links
Each page says where it is, each link says where it leads, and the menu remains the same.
9 criteria, level A, AA, AAA
Pointers, gestures and targets
Finger, mouse, pen and language serve the same, sufficiently large targets.
8 criteria, level A, AA, AAA
Language and comprehensibility
The language is in the source text, technical words and abbreviations are explained.
6 criteria, level A, AA, AAA
Complete forms
Each field is labeled, explained and pre-filled where it goes; Nothing changes unasked.
7 criteria, level A, AA, AAA
Error, confirmation and registration
Errors are named and correctable, consequences confirmed, registration does not require a puzzle.
6 criteria, level A, AA, AAA
Auxiliary technology: name, role, status
Read-out programs learn what an element is, what it is called and what changes.
3 criteria, level A, AA, AAA
Bildnachweise
- Images and graphics: bady qb, CC0
- Audio and video: Kelly Sikkema, CC0
- Headings, tables and order: Clem Onojeghuo, CC0
- Colour and contrast: Alex Mihis, CC0
- Text size, zoom and orientation: Heptagon, Public Domain
- Keyboard and focus: Glenn Carstens-Peters, CC0
- Time and interruptions: Rodion Kutsaev, CC0
- Movement, blinking and sound: Sebastian Pichler, CC0
- Navigation, orientation and links: freddie marriage, CC0
- Pointers, gestures and targets: Gilles Lambert, CC0
- Language and comprehensibility: Edho Pratama, CC0
- Complete forms: Aaron Burden, CC0
- Error, confirmation and registration: Bench Accounting, CC0
- Auxiliary technology: name, role, status: Michal Klajban, CC BY-SA 3.0
Good to know
- A criterion shall only be deemed to have been passed if there is evidence.
- Non-decidable criteria are assessed by an examiner — in the gold standard.
- The partial seal is valid for 12 months and can be publicly verified at any time.
- Repeat tests show the change over time.


















