WCAG 2.1 Quick Reference
All success criteria at a glance with descriptions
Non-text Content
All non-text content has a text alternative that serves the equivalent purpose.
Learn more →Audio-only and Video-only
Alternatives are provided for prerecorded audio-only and video-only content.
Learn more →Captions (Prerecorded)
Captions are provided for all prerecorded audio content in synchronized media.
Learn more →Audio Description or Media Alternative
An alternative for time-based media or audio description is provided.
Learn more →Captions (Live)
Captions are provided for all live audio content in synchronized media.
Learn more →Audio Description (Prerecorded)
Audio description is provided for all prerecorded video content.
Learn more →Info and Relationships
Information, structure, and relationships conveyed through presentation can be programmatically determined.
Learn more →Meaningful Sequence
When the sequence affects meaning, a correct reading sequence can be programmatically determined.
Learn more →Sensory Characteristics
Instructions do not rely solely on sensory characteristics like shape, color, size, or sound.
Learn more →Orientation
Content does not restrict its view and operation to a single display orientation.
Learn more →Identify Input Purpose
The purpose of each input field can be programmatically determined.
Learn more →Use of Color
Color is not used as the only visual means of conveying information.
Learn more →Audio Control
If audio plays automatically, there is a mechanism to pause, stop, or control volume.
Learn more →Contrast (Minimum)
Text has a contrast ratio of at least 4.5:1 (3:1 for large text).
Learn more →Resize Text
Text can be resized up to 200% without loss of content or functionality.
Learn more →Images of Text
If the technologies can achieve the visual presentation, text is used instead of images of text.
Learn more →Reflow
Content can be presented without loss of information or functionality at 320px wide.
Learn more →Non-text Contrast
UI components and graphical objects have a contrast ratio of at least 3:1.
Learn more →Text Spacing
No loss of content or functionality occurs when adjusting text spacing properties.
Learn more →Content on Hover or Focus
Additional content triggered by hover or focus is dismissible, hoverable, and persistent.
Learn more →Test your site against these criteria
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