WCAG 2.2 Perceivable Flashcards
1.1
Text Alternatives - Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.
1.1.1 only
1.1.1
Non-text Content (Level A)
All non-text content that is presented to the user has a text alternative that serves the equivalent purpose, except for the situations listed below.
Controls, Input
If non-text content is a control or accepts user input, then it has a name that describes its purpose. (Refer to Success Criterion 4.1.2 for additional requirements for controls and content that accepts user input.)
Time-Based Media
If non-text content is time-based media, then text alternatives at least provide descriptive identification of the non-text content. (Refer to Guideline 1.2 for additional requirements for media.)
Test
If non-text content is a test or exercise that would be invalid if presented in text, then text alternatives at least provide descriptive identification of the non-text content.
Sensory
If non-text content is primarily intended to create a specific sensory experience, then text alternatives at least provide descriptive identification of the non-text content.
CAPTCHA
If the purpose of non-text content is to confirm that content is being accessed by a person rather than a computer, then text alternatives that identify and describe the purpose of the non-text content are provided, and alternative forms of CAPTCHA using output modes for different types of sensory perception are provided to accommodate different disabilities.
Decoration, Formatting, Invisible
If non-text content is pure decoration, is used only for visual formatting, or is not presented to users, then it is implemented in a way that it can be ignored by assistive technology.
1.2
Time-based Media - Provide alternatives for time-based media.
1.2.1 to 1.2.9
1.2.1
Audio-only and Video-only (Prerecorded) (Level A)
For prerecorded audio-only and prerecorded video-only media, the following are true, except when the audio or video is a media alternative for text and is clearly labeled as such:
Prerecorded Audio-only
An alternative for time-based media is provided that presents equivalent information for prerecorded audio-only content.
Prerecorded Video-only
Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.
1.2.2
1.2.2 Captions (Prerecorded) (Level A)
Captions are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
1.2.3
1.2.3 Audio Description or Media Alternative (Prerecorded) (Level A)
An alternative for time-based media or audio description of the prerecorded video content is provided for synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
1.2.4
1.2.4 Captions (Live) (Level AA)
Captions are provided for all live audio content in synchronized media.
1.2.5
1.2.5 Audio Description (Prerecorded) (Level AA)
Audio description is provided for all prerecorded video content in synchronized media.
1.2.6
1.2.6 Sign Language (Prerecorded) (Level AAA)
Sign language interpretation is provided for all prerecorded audio content in synchronized media.
1.2.7
1.2.7 Extended Audio Description (Prerecorded) (Level AAA)
Where pauses in foreground audio are insufficient to allow audio descriptions to convey the sense of the video, extended audio description is provided for all prerecorded video content in synchronized media.
1.2.8
1.2.8 Media Alternative (Prerecorded) (Level AAA)
An alternative for time-based media is provided for all prerecorded synchronized media and for all prerecorded video-only media.
1.2.9
1.2.9 Audio-only (Live) (Level AAA)
An alternative for time-based media that presents equivalent information for live audio-only content is provided.
1.3
1.3 Adaptable
Create content that can be presented in different ways (for example simpler layout) without losing information or structure.
1.3.1 to 1.3.6
1.3.1
1.3.1 Info and Relationships (Level A)
Information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text.
1.3.2
1.3.2 Meaningful Sequence (Level A)
When the sequence in which content is presented affects its meaning, a correct reading sequence can be programmatically determined.
1.3.3
1.3.3 Sensory Characteristics (Level A)
Instructions provided for understanding and operating content do not rely solely on sensory characteristics of components such as shape, color, size, visual location, orientation, or sound.
1.3.4
1.3.4 Orientation (Level AA)
Content does not restrict its view and operation to a single display orientation, such as portrait or landscape, unless a specific display orientation is essential.
Note: Examples where a particular display orientation may be essential are a bank check, a piano application, slides for a projector or television, or virtual reality content where content is not necessarily restricted to landscape or portrait display orientation.
1.3.5
1.3.5 Identify Input Purpose (Level AA)
The purpose of each input field collecting information about the user can be programmatically determined when:
The input field serves a purpose identified in the Input Purposes for user interface components section; and
The content is implemented using technologies with support for identifying the expected meaning for form input data.
1.3.6
1.3.6 Identify Purpose (Level AAA)
In content implemented using markup languages, the purpose of user interface components, icons, and regions can be programmatically determined.
1.4
1.4 Distinguishable
Make it easier for users to see and hear content including separating foreground from background.
1.4.1 to 1.4.9
1.4.1
1.4.1 Use of Color (Level A)
Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element.
1.4.3
1.4.3 Contrast (Minimum) (Level AA)
The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following:
Large Text
Large-scale text and images of large-scale text have a contrast ratio of at least 3:1;
Incidental
Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement.
Logotypes
Text that is part of a logo or brand name has no contrast requirement.
1.4.2
1.4.2 Audio Control (Level A)
If any audio on a Web page plays automatically for more than 3 seconds, either a mechanism is available to pause or stop the audio, or a mechanism is available to control audio volume independently from the overall system volume level.
Note: Since any content that does not meet this success criterion can interfere with a user’s ability to use the whole page, all content on the Web page (whether or not it is used to meet other success criteria) must meet this success criterion. See Conformance Requirement 5: Non-Interference.
1.4.4
1.4.4 Resize Text (Level AA)
Except for captions and images of text, text can be resized without assistive technology up to 200 percent without loss of content or functionality.