-
Perceivable
-
Text Alternatives
- Non-text Content
- WCAG 2.0 ID: text-equiv-all
- WCAG 2.1 ID: non-text-content
- Non-text Content
-
Time-based Media
-
Audio-only and Video-only (Prerecorded)
- WCAG 2.0 ID: media-equiv-av-only-alt
- WCAG 2.1 ID: audio-only-and-video-only-prerecorded
-
Captions (Prerecorded)
- WCAG 2.0 ID: media-equiv-captions
- WCAG 2.1 ID: captions-prerecorded
-
Audio Description or Media Alternative (Prerecorded)
- WCAG 2.0 ID: media-equiv-audio-desc
- WCAG 2.1 ID: audio-description-or-media-alternative-prerecorded
-
Captions (Live)
- WCAG 2.0 ID: media-equiv-real-time-captions
- WCAG 2.1 ID: captions-live
-
Audio Description (Prerecorded)
- WCAG 2.0 ID: media-equiv-audio-desc-only
- WCAG 2.1 ID: audio-description-prerecorded
-
Sign Language (Prerecorded)
- WCAG 2.0 ID: media-equiv-sign
- WCAG 2.1 ID: sign-language-prerecorded
-
Extended Audio Description (Prerecorded)
- WCAG 2.0 ID: media-equiv-extended-ad
- WCAG 2.1 ID: extended-audio-description-prerecorded
-
Media Alternative (Prerecorded)
- WCAG 2.0 ID: media-equiv-text-doc
- WCAG 2.1 ID: media-alternative-prerecorded
-
Audio-only (Live)
- WCAG 2.0 ID: media-equiv-live-audio-only
- WCAG 2.1 ID: audio-only-live
-
-
Adaptable
-
Info and Relationships
- WCAG 2.0 ID: content-structure-separation-programmatic
- WCAG 2.1 ID: info-and-relationships
-
Meaningful Sequence
- WCAG 2.0 ID: content-structure-separation-sequence
- WCAG 2.1 ID: meaningful-sequence
-
Sensory Characteristics
- WCAG 2.0 ID: content-structure-separation-understanding
- WCAG 2.1 ID: sensory-characteristics
-
Orientation
- WCAG 2.0 ID:
- WCAG 2.1 ID: orientation
-
Identify Input Purpose
- WCAG 2.0 ID:
- WCAG 2.1 ID: identify-input-purpose
-
Identify Purpose
- WCAG 2.0 ID:
- WCAG 2.1 ID: identify-purpose
-
-
Distinguishable
-
Use of Color
- WCAG 2.0 ID: visual-audio-contrast-without-color
- WCAG 2.1 ID: use-of-color
-
Audio Control
- WCAG 2.0 ID: visual-audio-contrast-dis-audio
- WCAG 2.1 ID: audio-control
-
Contrast (Minimum)
- WCAG 2.0 ID: visual-audio-contrast-contrast
- WCAG 2.1 ID: contrast-minimum
-
Resize text
- WCAG 2.0 ID: visual-audio-contrast-scale
- WCAG 2.1 ID: resize-text
-
Images of Text
- WCAG 2.0 ID: visual-audio-contrast-text-presentation
- WCAG 2.1 ID: images-of-text
-
Contrast (Enhanced)
- WCAG 2.0 ID: visual-audio-contrast7
- WCAG 2.1 ID: contrast-enhanced
-
Low or No Background Audio
- WCAG 2.0 ID: visual-audio-contrast-noaudio
- WCAG 2.1 ID: low-or-no-background-audio
-
Visual Presentation
- WCAG 2.0 ID: visual-audio-contrast-visual-presentation
- WCAG 2.1 ID: visual-presentation
-
Images of Text (No Exception)
- WCAG 2.0 ID: visual-audio-contrast-text-images
- WCAG 2.1 ID: images-of-text-no-exception
-
Reflow
- WCAG 2.0 ID:
- WCAG 2.1 ID: reflow
-
Non-text Contrast
- WCAG 2.0 ID:
- WCAG 2.1 ID: non-text-contrast
-
Text Spacing
- WCAG 2.0 ID:
- WCAG 2.1 ID: text-spacing
-
Content on Hover or Focus
- WCAG 2.0 ID:
- WCAG 2.1 ID: content-on-hover-or-focus
-
-
-
Operable
-
Keyboard Accessible
-
Keyboard
- WCAG 2.0 ID: keyboard-operation-keyboard-operable
- WCAG 2.1 ID: keyboard
-
No Keyboard Trap
- WCAG 2.0 ID: keyboard-operation-trapping
- WCAG 2.1 ID: no-keyboard-trap
-
Keyboard (No Exception)
- WCAG 2.0 ID: keyboard-operation-all-funcs
- WCAG 2.1 ID: keyboard-no-exception
-
Character Key Shortcuts
- WCAG 2.0 ID:
- WCAG 2.1 ID: character-key-shortcuts
-
-
Enough Time
-
Timing Adjustable
- WCAG 2.0 ID: time-limits-required-behaviors
- WCAG 2.1 ID: timing-adjustable
-
Pause, Stop, Hide
- WCAG 2.0 ID: time-limits-pause
- WCAG 2.1 ID: pause-stop-hide
-
No Timing
- WCAG 2.0 ID: time-limits-no-exceptions
- WCAG 2.1 ID: no-timing
-
Interruptions
- WCAG 2.0 ID: time-limits-postponed
- WCAG 2.1 ID: interruptions
-
Re-authenticating
- WCAG 2.0 ID: time-limits-server-timeout
- WCAG 2.1 ID: re-authenticating
-
Timeouts
- WCAG 2.0 ID:
- WCAG 2.1 ID: timeouts
-
-
Seizures and Physical Reactions
-
Three Flashes or Below Threshold
- WCAG 2.0 ID: seizure-does-not-violate
- WCAG 2.1 ID: three-flashes-or-below-threshold
-
Three Flashes
- WCAG 2.0 ID: seizure-three-times
- WCAG 2.1 ID: three-flashes
-
Animation from Interactions
- WCAG 2.0 ID:
- WCAG 2.1 ID: animation-from-interactions
-
-
Navigable
-
Bypass Blocks
- WCAG 2.0 ID: navigation-mechanisms-skip
- WCAG 2.1 ID: bypass-blocks
-
Page Titled
- WCAG 2.0 ID: navigation-mechanisms-title
- WCAG 2.1 ID: page-titled
-
Focus Order
- WCAG 2.0 ID: navigation-mechanisms-focus-order
- WCAG 2.1 ID: focus-order
-
Link Purpose (In Context)
- WCAG 2.0 ID: navigation-mechanisms-refs
- WCAG 2.1 ID: link-purpose-in-context
-
Multiple Ways
- WCAG 2.0 ID: navigation-mechanisms-mult-loc
- WCAG 2.1 ID: multiple-ways
-
Headings and Labels
- WCAG 2.0 ID: navigation-mechanisms-descriptive
- WCAG 2.1 ID: headings-and-labels
-
Focus Visible
- WCAG 2.0 ID: navigation-mechanisms-focus-visible
- WCAG 2.1 ID: focus-visible
-
Location
- WCAG 2.0 ID: navigation-mechanisms-location
- WCAG 2.1 ID: location
-
Link Purpose (Link Only)
- WCAG 2.0 ID: navigation-mechanisms-link
- WCAG 2.1 ID: link-purpose-link-only
-
Section Headings
- WCAG 2.0 ID: navigation-mechanisms-headings
- WCAG 2.1 ID: section-headings
-
-
Input Modalities
-
Pointer Gestures
- WCAG 2.0 ID:
- WCAG 2.1 ID: pointer-gestures
-
Pointer Cancellation
- WCAG 2.0 ID:
- WCAG 2.1 ID: pointer-cancellation
-
Label in Name
- WCAG 2.0 ID:
- WCAG 2.1 ID: label-in-name
-
Motion Actuation
- WCAG 2.0 ID:
- WCAG 2.1 ID: motion-actuation
-
Target Size
- WCAG 2.0 ID:
- WCAG 2.1 ID: target-size
-
Concurrent Input Mechanisms
- WCAG 2.0 ID:
- WCAG 2.1 ID: concurrent-input-mechanisms
-
-
-
Understandable
-
Readable
-
Language of Page
- WCAG 2.0 ID: meaning-doc-lang-id
- WCAG 2.1 ID: language-of-page
-
Language of Parts
- WCAG 2.0 ID: meaning-other-lang-id
- WCAG 2.1 ID: language-of-parts
-
Unusual Words
- WCAG 2.0 ID: meaning-idioms
- WCAG 2.1 ID: unusual-words
-
Abbreviations
- WCAG 2.0 ID: meaning-located
- WCAG 2.1 ID: abbreviations
-
Reading Level
- WCAG 2.0 ID: meaning-supplements
- WCAG 2.1 ID: reading-level
-
Pronunciation
- WCAG 2.0 ID: meaning-pronunciation
- WCAG 2.1 ID: pronunciation
-
-
Predictable
-
On Focus
- WCAG 2.0 ID: consistent-behavior-receive-focus
- WCAG 2.1 ID: on-focus
-
On Input
- WCAG 2.0 ID: consistent-behavior-unpredictable-change
- WCAG 2.1 ID: on-input
-
Consistent Navigation
- WCAG 2.0 ID: consistent-behavior-consistent-locations
- WCAG 2.1 ID: consistent-navigation
-
Consistent Identification
- WCAG 2.0 ID: consistent-behavior-consistent-functionality
- WCAG 2.1 ID: consistent-identification
-
Change on Request
- WCAG 2.0 ID: consistent-behavior-no-extreme-changes-context
- WCAG 2.1 ID: change-on-request
-
-
Input Assistance
-
Error Identification
- WCAG 2.0 ID: minimize-error-identified
- WCAG 2.1 ID: error-identification
-
Labels or Instructions
- WCAG 2.0 ID: minimize-error-cues
- WCAG 2.1 ID: labels-or-instructions
-
Error Suggestion
- WCAG 2.0 ID: minimize-error-suggestions
- WCAG 2.1 ID: error-suggestion
-
Error Prevention (Legal, Financial, Data)
- WCAG 2.0 ID: minimize-error-reversible
- WCAG 2.1 ID: error-prevention-legal-financial-data
-
Help
- WCAG 2.0 ID: minimize-error-context-help
- WCAG 2.1 ID: help
-
Error Prevention (All)
- WCAG 2.0 ID: minimize-error-reversible-all
- WCAG 2.1 ID: error-prevention-all
-
-
-
Robust
- Compatible
-
Parsing
- WCAG 2.0 ID: ensure-compat-parses
- WCAG 2.1 ID: parsing
-
Name, Role, Value
- WCAG 2.0 ID: ensure-compat-rsv
- WCAG 2.1 ID: name-role-value
-
Status Messages
- WCAG 2.0 ID:
- WCAG 2.1 ID: status-messages
-
- Compatible
ID changes from WCAG 2.0 to 2.1
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