Talk:WCAG 2.1 Success Criteria
This is a review of WCAG 2.0 Success Criteria to help with level assignment of new SC for 2.1.
Essential: If the Success Criterion isn’t met, then even assistive technology can’t make content accessible; or there are no workarounds; or the content is blocking.
Easy: The Success Criterion is not technically challenging to implement and requires only minimal effort.
Invisible: The Success Criterion imposes only trivial limits on the “look & feel” and/or function of the Web page.
All Content: It is possible to satisfy the Success Criterion for all Web sites and types of content.
SC# | SC Title | Level | Essential | Easy | Invisible | All Content | Comment |
---|---|---|---|---|---|---|---|
1.1.1 | Non-text Content | A | YES | YES | YES | YES | Easy, except for “alternative forms of CAPTCHA…” |
1.2.1 | Audio-only and Video-only (Prerecorded) | A | YES | no | no | YES | Not characterized as easy since alternative formats are relatively labor intensive. |
1.2.2 | Captions (Prerecorded) | A | YES | no | no | YES | |
1.2.3 | Audio Description or Media Alternative (Prerecorded) | A | YES | no | no | YES | |
1.3.1 | Info and Relationships | A | YES | no | YES | YES | Many techniques associated with 1.3.1 are easy, but this is an expansive SC, so it is not characterized as easy. |
1.3.2 | Meaningful Sequence | A | YES | YES | YES | YES | |
1.3.3 | Sensory Characteristics | A | YES | YES | YES | YES | |
1.4.1 | Use of Color | A | YES | YES | YES | YES | |
1.4.2 | Audio Control | A | YES | YES | no | YES | |
2.1.1 | Keyboard | A | YES | YES | YES | YES | Easy since standard HTML controls already meet this success criterion when used according to specification. This requirement was not even in WCAG 1.0. |
2.1.2 | No Keyboard Trap | A | YES | YES | YES | YES | As with 2.1.1, this was not even in WCAG 1.0. |
2.2.1 | Timing Adjustable | A | YES | YES | no | YES | Characterized as easy because the SC provides multiple good options. |
2.2.2 | Pause, Stop, Hide | A | YES | YES | no | YES | Characterized as easy because the SC provides multiple good options. |
2.3.1 | Three Flashes or Below Threshold | A | YES | YES | no | YES | |
2.4.1 | Bypass Blocks | A | no | YES | no | YES | |
2.4.2 | Page Titled | A | no | YES | YES | YES | |
2.4.3 | Focus Order | A | no | YES | YES | YES | |
2.4.4 | Link Purpose (In Context) | A | no | YES | YES | YES | |
3.1.1 | Language of Page | A | no | YES | YES | YES | |
3.2.1 | On Focus | A | YES | YES | YES | YES | |
3.2.2 | On Input | A | YES | YES | no | YES | |
3.3.1 | Error Identification | A | YES | YES | YES | YES | Characterized as easy and invisible because this SC presumes that the page is already designed to convey error messages to the user. |
3.3.2 | Labels or Instructions | A | YES | YES | no | YES | |
4.1.1 | Parsing | A | YES | no | YES | YES | |
4.1.2 | Name, Role, Value | A | YES | YES | YES | YES | Easy since standard HTML controls already meet this success criterion when used according to specification. Per the Note, this SC is primarily for Web authors who develop or script their own user interface components. |
1.2.4 | Captions (Live) | AA | YES | no | no | YES | |
1.2.5 | Audio Description (Prerecorded) | AA | YES | no | no | YES | |
1.4.3 | Contrast (Minimum) | AA | no | YES | no | YES | |
1.4.4 | Resize text | AA | no | YES | YES | YES | In 2008, before widespread browser zoom, this was neither Easy nor Invisible. |
1.4.5 | Images of Text | AA | no | no | YES | YES | |
2.4.5 | Multiple Ways | AA | no | no | no | YES | |
2.4.6 | Headings and Labels | AA | no | YES | no | YES | |
2.4.7 | Focus Visible | AA | no | YES | YES | YES | |
3.1.2 | Language of Parts | AA | no | no | YES | YES | |
3.2.3 | Consistent Navigation | AA | no | YES | YES | YES | |
3.2.4 | Consistent Identification | AA | no | YES | YES | YES | |
3.3.3 | Error Suggestion | AA | no | no | no | YES | |
3.3.4 | Error Prevention (Legal, Financial, Data) | AA | no | no | no | YES | |
1.2.6 | Sign Language (Prerecorded) | AAA | no | no | no | no | |
1.2.7 | Extended Audio Description (Prerecorded) | AAA | no | no | no | no | |
1.2.8 | Media Alternative (Prerecorded) | AAA | no | no | no | YES | |
1.2.9 | Audio-only (Live) | AAA | YES | no | no | no | |
1.4.6 | Contrast (Enhanced) | AAA | no | YES | no | YES | |
1.4.7 | Low or No Background Audio | AAA | YES | no | no | no | |
1.4.8 | Visual Presentation | AAA | YES | no | no | no | |
1.4.9 | Images of Text (No Exception) | AAA | no | no | no | no | |
2.1.3 | Keyboard (No Exception) | AAA | YES | no | no | no | |
2.2.3 | No Timing | AAA | YES | no | no | no | |
2.2.4 | Interruptions | AAA | YES | no | no | no | |
2.2.5 | Re-authenticating | AAA | YES | no | no | no | |
2.3.2 | Three Flashes | AAA | YES | no | no | no | |
2.4.8 | Location | AAA | no | no | no | no | |
2.4.9 | Link Purpose (Link Only) | AAA | no | YES | no | no | |
2.4.10 | Section Headings | AAA | no | YES | no | no | |
3.1.3 | Unusual Words | AAA | no | no | no | no | |
3.1.4 | Abbreviations | AAA | no | YES | no | no | |
3.1.5 | Reading Level | AAA | YES | no | no | no | |
3.1.6 | Pronunciation | AAA | no | no | no | no | |
3.2.5 | Change on Request | AAA | YES | no | no | no | |
3.3.5 | Help | AAA | no | no | no | no | |
3.3.6 | Error Prevention (All) | AAA | no | no | no | YES |