Grackle Check - WCAG Accessibility Checker

Tracking since Apr 16, 2026.

Changelog

• May 2, 2026
  description

  Grackle Check is a comprehensive WCAG 2.2 AA accessibility checker that runs directly
     in your browser. Built by GrackleDocs, it scans any webpage for accessibility issues
     and displays results in a convenient side panel.
  
    KEY FEATURES:
    - Complete WCAG 2.2 AA automated checks (Level A and AA criteria)
    - Side panel interface that stays open while you browse
    - Filter-aware highlights — show only failures, warnings, or both
    - Click any issue to scroll to and highlight the element
    - Overview, Failures, ARIA, Reading Order, and Images tabs
    - Draggable code inspection modal with smart positioning
    - Contrast results show detected foreground/background colors
    - Branded HTML report with table of contents and navigation
    - Flesch-Kincaid reading level analysis
    - CSV export for spreadsheet analysis
    - Available in English, Spanish, French, and German
    - 100% local processing — no data leaves your browser
  
    WCAG CRITERIA CHECKED:
    - 1.1.1 Non-text Content (images, alt text)
    - 1.2.1 Audio-only and Video-only (media detection)
    - 1.2.2 Captions Prerecorded (video caption tracks)
    - 1.2.5 Audio Description (video description tracks)
    - 1.3.1 Info and Relationships (headings, forms, landmarks, tables, labels, ARIA)
    - 1.4.3 Contrast Minimum (color contrast with detected colors)
    - 1.4.8 Visual Presentation (text justification)
    - 2.1.1 Keyboard (keyboard accessibility)
    - 2.4.1 Bypass Blocks (skip links with target validation)
    - 2.4.2 Page Titled
    - 2.4.4 Link Purpose (link text quality)
    - 2.4.7 Focus Visible (focus indicators)
    - 2.4.11 Focus Not Obscured (WCAG 2.2)
    - 2.5.8 Target Size Minimum (WCAG 2.2)
    - 3.1.1 Language of Page (HTML lang attribute)
    - 3.3.7 Accessible Authentication (WCAG 2.2)
    - 3.3.8 Redundant Entry (WCAG 2.2)
    - 4.1.2 Name, Role, Value (buttons, iframes, ARIA validation)
  
    PRIVACY:
    All accessibility checks run entirely in your browser. No data is collected, stored
    externally, or transmitted to any server.
  
    Built by GrackleDocs — making digital accessibility achievable for everyone.

  Grackle Check is a comprehensive WCAG 2.2 AA accessibility checker that runs directly in your browser. Built by GrackleDocs, it scans
     any webpage for accessibility issues and displays results in a convenient side panel.
  
    KEY FEATURES:
    - Complete WCAG 2.2 AA automated checks (Level A and AA criteria)
    - Side panel interface that stays open while you browse
    - Filter-aware highlights — show only failures, warnings, or both
    - Click any issue to scroll to and highlight the element
    - Overview, Failures, ARIA, Reading Order, and Images tabs
    - Draggable code inspection modal with smart positioning
    - Contrast results show detected foreground/background colors
    - Branded HTML report with table of contents and navigation
    - Flesch-Kincaid reading level analysis
    - CSV export for spreadsheet analysis
    - Available in English, Spanish, French, and German
    - 100% local processing — no data leaves your browser
  
    WCAG CRITERIA CHECKED:
  
    Level A
    - 1.1.1 Non-text Content (images, alt text)
    - 1.2.1 Audio-only and Video-only (media detection)
    - 1.2.2 Captions Prerecorded (video caption tracks)
    - 1.2.5 Audio Description (video description tracks)
    - 1.3.1 Info and Relationships (headings, forms, landmarks, tables, labels, ARIA)
    - 1.3.5 Identify Input Purpose (autocomplete tokens for personal data fields)
    - 2.1.1 Keyboard (keyboard accessibility)
    - 2.2.1 Timing Adjustable (meta refresh and auto-refresh detection)
    - 2.2.2 Pause, Stop, Hide (marquee, blink, autoplay media, animated GIFs)
    - 2.4.1 Bypass Blocks (skip links with target validation)
    - 2.4.2 Page Titled
    - 2.4.3 Focus Order (positive tabindex and CSS order conflicts)
    - 2.4.4 Link Purpose (link text quality)
    - 2.5.3 Label in Name (aria-label must contain visible text)
    - 3.1.1 Language of Page (HTML lang attribute)
    - 4.1.2 Name, Role, Value (buttons, iframes, ARIA validation)
  
    Level AA
    - 1.4.3 Contrast Minimum (color contrast with detected colors)
    - 1.4.11 Non-text Contrast (3:1 minimum for UI component borders)
    - 2.4.7 Focus Visible (focus indicators)
    - 2.4.11 Focus Not Obscured (WCAG 2.2)
    - 2.5.8 Target Size Minimum (WCAG 2.2)
    - 3.3.7 Accessible Authentication (WCAG 2.2)
    - 3.3.8 Redundant Entry (WCAG 2.2)
  
    Level AAA (partial)
    - 1.4.8 Visual Presentation (text justification)
  
    PRIVACY:
    All accessibility checks run entirely in your browser. No data is collected, stored externally, or transmitted to any server.
  
    Built by GrackleDocs — making digital accessibility achievable for everyone.

Permissions & access

Permissions

activeTabstoragescriptingnotificationscontextMenussidePanel

Host access

<all_urls>

Screenshots

Similar extensions

Alternatives to Grackle Check - WCAG Accessibility Checker, ranked by description similarity.

Accessibility Checker by WebYes

Accessibility Checker for developers and testers to identify WCAG issues directly in Chrome for improved accessibility compliance.

849

★ 4.8

WeAccess Scan

Web pages accessibility testing Chrome extension

61

★ 5.0

A11yMate - WCAG Accessibility Checker

Scan any webpage for WCAG 2.2 accessibility violations and get fix suggestions instantly.

4

WCAG 2.1 Accessibility 1.4 Text and Contrast Testing and Checking Tool

Toggles for WCAG: 1.4.12 (Text Spacing), 1.4.4 (Text Resize), 1.4.1 (Grayscale), 1.4.10 (320px Reflow).

615

Accessibility Ai

Scan and fix accessibility issues on any website.

—

A11y Spotlight

An extension to help you identify accessibility issues on your website.

36

Siteimprove Accessibility Checker

Jumpstart your web accessibility efforts directly in Chrome.

60.0K

★ 3.2

Able - Accessibility & ADA Compliance Checker

One-click WCAG & ADA accessibility audits with plain-language results and actionable fix suggestions.

19