| 1 Perceivable |
http://www.w3.org/TR/WCAG/#perceivable |
https://www.w3.org/TR/WCAG21/#perceivable |
| 1.1 Text Alternatives |
http://www.w3.org/TR/WCAG/#text-equiv |
https://www.w3.org/TR/WCAG21/#text-alternatives |
| 1.1.1 Non-text Content |
http://www.w3.org/TR/WCAG20/#text-equiv-all |
https://www.w3.org/TR/WCAG21/#non-text-content |
| 1.2 Time-based Media |
http://www.w3.org/TR/WCAG/#media-equiv |
https://www.w3.org/TR/WCAG21/#time-based-media |
| 1.2.1 Audio-only and Video-only (Prerecorded) |
http://www.w3.org/TR/WCAG20/#media-equiv-av-only-alt |
https://www.w3.org/TR/WCAG21/#audio-only-and-video-only-prerecorded |
| 1.2.2 Captions (Prerecorded) |
http://www.w3.org/TR/WCAG20/#media-equiv-captions |
https://www.w3.org/TR/WCAG21/#captions-prerecorded |
| 1.2.3 Audio Description or Media Alternative (Prerecorded) |
http://www.w3.org/TR/WCAG20/#media-equiv-audio-desc |
https://www.w3.org/TR/WCAG21/#audio-description-or-media-alternative-prerecorded |
| 1.2.4 Captions (Live) |
http://www.w3.org/TR/WCAG20/#media-equiv-captions |
https://www.w3.org/TR/WCAG21/#captions-live |
| 1.2.5 Audio Description (Prerecorded) |
http://www.w3.org/TR/WCAG20/#media-equiv-audio-desc-only |
https://www.w3.org/TR/WCAG21/#audio-description-prerecorded |
| 1.2.6 Sign Language (Prerecorded) |
http://www.w3.org/TR/WCAG20/#media-equiv-sign |
https://www.w3.org/TR/WCAG21/#sign-language-prerecorded |
| 1.2.7 Extended Audio Description (Prerecorded) |
http://www.w3.org/TR/WCAG20/#media-equiv-extended-ad |
https://www.w3.org/TR/WCAG21/#extended-audio-description-prerecorded |
| 1.2.8 Media Alternative (Prerecorded) |
http://www.w3.org/TR/WCAG20/#media-equiv-text-doc |
https://www.w3.org/TR/WCAG21/#media-alternative-prerecorded |
| 1.2.9 Audio-only (Live) |
http://www.w3.org/TR/WCAG20/#media-equiv-live-audio-only |
https://www.w3.org/TR/WCAG21/#audio-only-live |
| 1.3 Adaptable |
http://www.w3.org/TR/WCAG20/#content-structure-separation |
https://www.w3.org/TR/WCAG21/#adaptable |
| 1.3.1 Info and Relationships |
http://www.w3.org/TR/WCAG20/#content-structure-separation-programmatic |
https://www.w3.org/TR/WCAG21/#info-and-relationships |
| 1.3.2 Meaningful Sequence |
http://www.w3.org/TR/WCAG20/#content-structure-separation-sequence |
https://www.w3.org/TR/WCAG21/#meaningful-sequence |
| 1.3.3 Sensory Characteristics |
http://www.w3.org/TR/WCAG20/#content-structure-separation-understanding |
https://www.w3.org/TR/WCAG21/#sensory-characteristics |
| 1.3.4 Orientation |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#orientation |
| 1.3.5 Identify Input Purpose |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#identify-input-purpose |
| 1.3.6 Identify Purpose |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#identify-purpose |
| 1.4 Distinguishable |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast |
https://www.w3.org/TR/WCAG21/#distinguishable |
| 1.4.1 Use of Color |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast-without-color |
https://www.w3.org/TR/WCAG21/#use-of-color |
| 1.4.2 Audio Control |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast-dis-audio |
https://www.w3.org/TR/WCAG21/#audio-control |
| 1.4.3 Contrast (Minimum) |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast-contrast |
https://www.w3.org/TR/WCAG21/#contrast-minimum |
| 1.4.4 Resize Text |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast-scale |
https://www.w3.org/TR/WCAG21/#resize-text |
| 1.4.5 Images of Text |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast-text-presentation |
https://www.w3.org/TR/WCAG21/#images-of-text |
| 1.4.6 Contrast (Enhanced) |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast7 |
https://www.w3.org/TR/WCAG21/#contrast-enhanced |
| 1.4.7 Low or No Background Audio |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast-noaudio |
https://www.w3.org/TR/WCAG21/#low-or-no-background-audio |
| 1.4.8 Visual Presentation |
http://www.w3.org/WAI/WCAG20/quickref/#qr-visual-audio-contrast-visual-presentation |
https://www.w3.org/TR/WCAG21/#visual-presentation |
| 1.4.9 Images of Text (No Exception) |
http://www.w3.org/TR/WCAG20/#visual-audio-contrast-text-images |
https://www.w3.org/TR/WCAG21/#images-of-text-no-exception |
| 1.4.10 Reflow |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#reflow |
| 1.4.11 Non-text Contrast |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#non-text-contrast |
| 1.4.12 Text Spacing |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#text-spacing |
| 1.4.13 Content on Hover or Focus |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#content-on-hover-or-focus |
| 2. Operable |
http://www.w3.org/TR/WCAG/#operable |
https://www.w3.org/TR/WCAG21/#operable |
| 2.1 Keyboard Accessible |
http://www.w3.org/TR/WCAG20/#keyboard-operation |
https://www.w3.org/TR/WCAG21/#keyboard-accessible |
| 2.1.1 Keyboard |
http://www.w3.org/TR/WCAG20/#keyboard-operation-keyboard-operable |
https://www.w3.org/TR/WCAG21/#keyboard |
| 2.1.2 No Keyboard Trap |
http://www.w3.org/TR/WCAG20/#keyboard-operation-trapping |
https://www.w3.org/TR/WCAG21/#no-keyboard-trap |
| 2.1.3 Keyboard (No Exception) |
http://www.w3.org/TR/WCAG20/#keyboard-operation-all-funcs |
https://www.w3.org/TR/WCAG21/#keyboard-no-exception |
| 2.1.4 Character Key Shortcuts |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#character-key-shortcuts |
| 2.2 Enough Time |
http://www.w3.org/TR/WCAG20/#time-limits |
https://www.w3.org/TR/WCAG21/#enough-time |
| 2.2.1 Timing Adjustable |
http://www.w3.org/TR/WCAG20/#time-limits-required-behaviors |
https://www.w3.org/TR/WCAG21/#timing-adjustable |
| 2.2.2 Pause, Stop, Hide |
http://www.w3.org/TR/WCAG20/#time-limits-pause |
https://www.w3.org/TR/WCAG21/#pause-stop-hide |
| 2.2.3 No Timing |
http://www.w3.org/TR/WCAG20/#time-limits-no-exceptions |
https://www.w3.org/TR/WCAG21/#no-timing |
| 2.2.4 Interruptions |
http://www.w3.org/TR/WCAG20/#time-limits-postponed |
https://www.w3.org/TR/WCAG21/#interruptions |
| 2.2.5 Re-authenticating |
http://www.w3.org/TR/WCAG20/#time-limits-server-timeout |
https://www.w3.org/TR/WCAG21/#re-authenticating |
| 2.2.6 Timeouts |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#timeouts |
| 2.3 Seizures |
http://www.w3.org/TR/WCAG20/#seizure |
https://www.w3.org/TR/WCAG21/#seizures-and-physical-reactions |
| 2.3.1 Three Flashes or Below Threshold |
http://www.w3.org/TR/WCAG20/#seizure-does-not-violate |
https://www.w3.org/TR/WCAG21/#three-flashes-or-below-threshold |
| 2.3.2 Three Flashes |
http://www.w3.org/TR/WCAG20/#seizure-three-times |
https://www.w3.org/TR/WCAG21/#three-flashes |
| 2.3.3 Animation from Interactions |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#animation-from-interactions |
| 2.4 Navigable |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms |
https://www.w3.org/TR/WCAG21/#navigable |
| 2.4.1 Bypass Blocks |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-skip |
https://www.w3.org/TR/WCAG21/#bypass-blocks |
| 2.4.2 Page Titled |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-title |
https://www.w3.org/TR/WCAG21/#page-titled |
| 2.4.3 Focus Order |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-focus-order |
https://www.w3.org/TR/WCAG21/#focus-order |
| 2.4.4 Link Purpose (In Context) |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-refs |
https://www.w3.org/TR/WCAG21/#link-purpose-in-context |
| 2.4.5 Multiple Ways |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-mult-loc |
https://www.w3.org/TR/WCAG21/#multiple-ways |
| 2.4.6 Headings and Labels |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-descriptive |
https://www.w3.org/TR/WCAG21/#headings-and-labels |
| 2.4.7 Focus Visible |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-focus-visible |
https://www.w3.org/TR/WCAG21/#focus-visible |
| 2.4.8 Location |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-location |
https://www.w3.org/TR/WCAG21/#location |
| 2.4.9 Link Purpose (Link Only) |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-link |
https://www.w3.org/TR/WCAG21/#link-purpose-link-only |
| 2.4.10 Section Headings |
http://www.w3.org/TR/WCAG20/#navigation-mechanisms-headings |
https://www.w3.org/TR/WCAG21/#section-headings |
| 2.5 Input Modalities |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#input-modalities |
| 2.5.1 Pointer Gestures |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#pointer-gestures |
| 2.5.2 Pointer Cancellation |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#pointer-cancellation |
| 2.5.3 Label in Name |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#label-in-name |
| 2.5.4 Motion Actuation |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#motion-actuation |
| 2.5.5 Target Size |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#target-size |
| 2.5.6 Concurrent Input Mechanisms |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#concurrent-input-mechanisms |
| 3. Understandable |
http://www.w3.org/TR/WCAG/#understandable |
https://www.w3.org/TR/WCAG21/#understandable |
| 3.1 Readable |
http://www.w3.org/TR/WCAG20/#meaning |
https://www.w3.org/TR/WCAG21/#readable |
| 3.1.1 Language of Page |
http://www.w3.org/TR/WCAG20/#meaning-doc-lang-id |
https://www.w3.org/TR/WCAG21/#language-of-page |
| 3.1.2 Language of Parts |
http://www.w3.org/TR/WCAG20/#meaning-other-lang-id |
https://www.w3.org/TR/WCAG21/#language-of-parts |
| 3.1.3 Unusual Words |
http://www.w3.org/TR/WCAG20/#meaning-idioms |
https://www.w3.org/TR/WCAG21/#unusual-words |
| 3.1.4 Abbreviations |
http://www.w3.org/TR/WCAG20/#meaning-located |
https://www.w3.org/TR/WCAG21/#abbreviations |
| 3.1.5 Reading Level |
http://www.w3.org/TR/WCAG20/#meaning-supplements |
https://www.w3.org/TR/WCAG21/#reading-level |
| 3.1.6 Pronunciation |
http://www.w3.org/TR/WCAG20/#meaning-pronunciation |
https://www.w3.org/TR/WCAG21/#pronunciation |
| 3.2 Predictable |
http://www.w3.org/TR/WCAG20/#consistent-behavior |
https://www.w3.org/TR/WCAG21/#predictable |
| 3.2.1 On Focus |
http://www.w3.org/TR/WCAG20/#consistent-behavior-receive-focus |
https://www.w3.org/TR/WCAG21/#on-focus |
| 3.2.2 On Input |
http://www.w3.org/TR/WCAG20/#consistent-behavior-unpredictable-change |
https://www.w3.org/TR/WCAG21/#on-input |
| 3.2.3 Consistent Navigation |
http://www.w3.org/TR/WCAG20/#consistent-behavior-consistent-locations |
https://www.w3.org/TR/WCAG21/#consistent-navigation |
| 3.2.4 Consistent Identification |
http://www.w3.org/TR/WCAG20/#consistent-behavior-consistent-functionality |
https://www.w3.org/TR/WCAG21/#consistent-identification |
| 3.2.5 Change on Request |
http://www.w3.org/TR/WCAG20/#consistent-behavior-no-extreme-changes-context |
https://www.w3.org/TR/WCAG21/#change-on-request |
| 3.3 Input Assistance |
http://www.w3.org/TR/WCAG20/#minimize-error |
https://www.w3.org/TR/WCAG21/#input-assistance |
| 3.3.1 Error Identification |
http://www.w3.org/TR/WCAG20/#minimize-error-identified |
https://www.w3.org/TR/WCAG21/#error-identification |
| 3.3.2 Labels or Instructions |
http://www.w3.org/TR/WCAG20/#minimize-error-cues |
https://www.w3.org/TR/WCAG21/#labels-or-instructions |
| 3.3.3 Error Suggestion |
http://www.w3.org/TR/WCAG20/#minimize-error-suggestions |
https://www.w3.org/TR/WCAG21/#error-suggestion |
| 3.3.4 Error Prevention (Legal, Financial, Data) |
http://www.w3.org/TR/WCAG20/#minimize-error-reversible |
https://www.w3.org/TR/WCAG21/#error-prevention-legal-financial-data |
| 3.3.5 Help |
http://www.w3.org/TR/WCAG20/#minimize-error-context-help |
https://www.w3.org/TR/WCAG21/#help |
| 3.3.6 Error Prevention (All) |
http://www.w3.org/TR/WCAG20/#minimize-error-reversible-all |
https://www.w3.org/TR/WCAG21/#error-prevention-all |
| 4. Robust |
http://www.w3.org/TR/WCAG/#robust |
https://www.w3.org/TR/WCAG21/#robust |
| 4.1 Compatible |
http://www.w3.org/TR/WCAG20/#ensure-compat |
https://www.w3.org/TR/WCAG21/#compatible |
| 4.1.1 Parsing |
http://www.w3.org/TR/WCAG20/#ensure-compat-parses |
https://www.w3.org/TR/WCAG21/#parsing |
| 4.1.2 Name, Role, Value |
http://www.w3.org/TR/WCAG20/#ensure-compat-rsv |
https://www.w3.org/TR/WCAG21/#name-role-value |
| 4.1.3 Status Messages |
N/A - New for WCAG 2.1 |
https://www.w3.org/TR/WCAG21/#status-messages |
