Wcag 2 2 Aaa
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WCAG 1.2.6: Sign Language (Prerecorded)
WCAG 1.2.6 requires that sign language interpretation be provided for all prerecorded audio content in synchronized media. This criterion ensures that Deaf users whose primary language is a sign language can fully access audio information that may not be adequately conveyed through captions alone.
WCAG 1.2.7: Extended Audio Description (Prerecorded)
WCAG 1.2.7 requires that when pauses in foreground audio are insufficient to convey all visual information, extended audio descriptions—achieved by pausing the video—must be provided for prerecorded synchronized media. This ensures blind and low-vision users can fully understand complex visual content that standard audio descriptions cannot cover.
WCAG 1.2.8: Media Alternative (Prerecorded)
WCAG 1.2.8 requires that a full text alternative is provided for all prerecorded synchronized media (audio-video) and prerecorded video-only content, ensuring that users who cannot perceive audio or visual information can access the complete content through text.
WCAG 1.2.9: Audio-only (Live)
WCAG 1.2.9 requires that all live audio-only content — such as live radio broadcasts or audio-only streams — be accompanied by a real-time text alternative equivalent, such as a live captions feed or text transcript updated synchronously. This ensures that users who are deaf or hard of hearing can access live audio content without relying on the audio track itself.
WCAG 1.4.6: Contrast (Enhanced)
WCAG 1.4.6 requires a minimum contrast ratio of 7:1 for normal text and 4.5:1 for large text between foreground and background colors, going beyond the AA threshold to ensure readability for users with low vision, color deficiencies, or those operating in challenging lighting conditions.
WCAG 1.4.7: Low or No Background Audio
WCAG 1.4.7 requires that pre-recorded audio content containing speech either has no background sounds, allows background sounds to be turned off, or keeps background sounds at least 20 dB quieter than the foreground speech. This protects users with hearing loss and cognitive disabilities who struggle to separate speech from competing audio.
WCAG 1.4.8: Visual Presentation
WCAG 1.4.8 requires that blocks of text be visually presented in ways users can control — covering foreground and background colors, line width, line spacing, and text alignment — so that people with reading, cognitive, or low-vision disabilities can comfortably read content without loss of information.
WCAG 1.4.9: Images of Text (No Exception)
WCAG 1.4.9 requires that text be presented using actual text rather than images of text, with no exceptions beyond purely decorative content or cases where the specific visual presentation is essential to the information conveyed. This criterion ensures all users can adjust text rendering to suit their individual needs.
WCAG 2.1.3: Keyboard (No Exception)
WCAG 2.1.3 requires that every function of a web page or application be operable via a keyboard interface, with no exceptions whatsoever—not even for path-dependent or freehand drawing tasks. This AAA criterion closes the loophole present in WCAG 2.1.1 and ensures full keyboard access for users who cannot use a mouse.
WCAG 2.2.3: No Timing
WCAG 2.2.3 (Level AAA) requires that timing is not an essential part of the event or activity presented by content, except for non-interactive synchronized media and real-time events. This ensures users with disabilities who need more time to read, interact, or respond are never excluded by time-dependent design.
WCAG 2.2.4: Interruptions
WCAG 2.2.4 requires that users can postpone or suppress all interruptions — such as alerts, notifications, and automatic content updates — except those involving an emergency. This criterion is essential for users with attention, cognitive, or neurological disabilities who may be severely disrupted by unexpected interruptions during a task.
WCAG 2.2.5: Re-authenticating
WCAG 2.2.5 requires that when an authenticated session expires, users can re-authenticate and continue their activity without losing any data they had entered. This criterion is critical for users with disabilities who may need more time to complete tasks and must not be penalized by session timeouts that erase their work.
WCAG 2.2.6: Timeouts
WCAG 2.2.6 requires that users are warned about data loss due to inactivity timeouts, and that any such timeout lasts at least 20 hours unless the data is preserved. This protects users with cognitive disabilities, motor impairments, and others who need more time to complete tasks.
WCAG 2.3.2: Three Flashes
WCAG 2.3.2 requires that web pages contain no content that flashes more than three times in any one-second period, with no exception for small or low-contrast flashes. This stricter AAA criterion protects users with photosensitive epilepsy and other seizure disorders from potentially life-threatening neurological reactions.
WCAG 2.3.3: Animation from Interactions
WCAG 2.3.3 requires that motion animation triggered by user interaction can be disabled, unless the animation is essential to the functionality or the information being conveyed. This matters because motion can trigger vestibular disorders, causing dizziness, nausea, and disorientation in a significant portion of the population.
WCAG 2.4.8: Location
WCAG 2.4.8 requires that users can determine where they are within a set of web pages — for example, through breadcrumbs, site maps, or highlighted navigation links. This helps users with cognitive disabilities, screen reader users, and anyone navigating complex sites to orient themselves and move through content with confidence.
WCAG 2.4.10: Section Headings
WCAG 2.4.10 requires that section headings are used to organize content whenever a page contains multiple sections, enabling users to navigate and understand the structure of the page. This criterion supports screen reader users, cognitive accessibility needs, and anyone who relies on document structure to orient themselves within long or complex content.
WCAG 2.4.12: Focus Not Obscured (Enhanced)
WCAG 2.4.12 requires that when a UI component receives keyboard focus, no part of that component is hidden by author-created content — the focused element must be fully visible. This enhanced (AAA) criterion eliminates the partial-visibility allowance of its AA counterpart, ensuring keyboard users always see exactly where focus is.
WCAG 2.4.13: Focus Appearance
WCAG 2.4.13 requires that keyboard focus indicators meet minimum size and contrast requirements so that users can clearly see which element has focus. This criterion ensures that people who rely on keyboards or assistive technologies can navigate interfaces without losing track of their current position.
WCAG 2.5.5: Target Size (Enhanced)
WCAG 2.5.5 requires that interactive targets such as buttons and links be at least 44×44 CSS pixels in size, ensuring people with motor impairments, tremors, or limited dexterity can reliably activate controls without accidentally triggering adjacent elements.
WCAG 3.1.3: Unusual Words
WCAG 3.1.3 requires that websites provide a mechanism to identify the specific definition of words or phrases used in an unusual or restricted way, including idioms and jargon. This ensures that users with cognitive disabilities, non-native speakers, and those unfamiliar with specialized terminology can understand the content.
WCAG 3.1.4: Abbreviations
WCAG 3.1.4 requires that a mechanism be available to identify the expanded form or meaning of abbreviations used in content. This criterion ensures that users who are unfamiliar with abbreviations, acronyms, or initialisms can access their full meaning, supporting comprehension for people with cognitive disabilities, non-native speakers, and screen reader users.
WCAG 3.1.5: Reading Level
WCAG 3.1.5 requires that when content demands a reading ability beyond lower secondary education level, a supplemental version or summary written at a simpler level is provided. This ensures that users with cognitive disabilities, limited literacy, or language barriers can access and understand the information.
WCAG 3.1.6: Pronunciation
WCAG 3.1.6 requires that a mechanism be available to identify the specific pronunciation of words where meaning is ambiguous without knowing the pronunciation. This criterion ensures users who rely on text-to-speech technology or who encounter unfamiliar language can access the correct meaning of ambiguous content.
WCAG 3.2.5: Change on Request
WCAG 3.2.5 requires that changes of context — such as page navigations, form submissions, or content updates — are initiated only by explicit user action, not triggered automatically. This protects users who rely on screen readers, keyboard navigation, or cognitive support tools from unexpected disruptions to their browsing experience.
WCAG 3.3.6: Error Prevention (All)
WCAG 3.3.6 requires that for any web page requiring user input, submissions are reversible, checked for errors with correction guidance, or confirmable before final submission. This AAA criterion extends 3.3.4 to all forms—not just legal or financial ones—protecting users from irreversible mistakes across every interaction.
WCAG 3.3.9: Accessible Authentication (Enhanced)
WCAG 3.3.9 requires that authentication processes involve no cognitive function test whatsoever — no puzzles, memorization, or transcription — unless a non-cognitive alternative, an assistive mechanism, or an object-based method is available. This Enhanced (AAA) criterion eliminates the last barriers to authentication for users with cognitive, motor, and memory-related disabilities.