AccessibilityChecker.org

Quickly find and highlight accessibility issues with the AccessibilityChecker.org browser extension.

ACE™ Extension by AccessibilityChecker.org brings real-time accessibility testing directly into your Chrome workflow. It catches what static scanners can't: issues triggered by user interaction, including modals, dropdowns, tooltips, dynamic forms, focus traps, and single-page app state changes. ACE™ Extension runs the same proprietary ACE Engine that powers the full ACE™ Platform, so your results use the same ACE Rule IDs and ACE Impact Classification (Legal Risk, User Impact, Best Practice) across every tool you use. Why browser-based testing? Automated scanners only see a page's initial state. If a field becomes required after a selection, or a modal's focus trap only activates once it renders, a static scan misses it. ACE™ Extension tests the page the way users actually experience it, live, in your browser, as you interact. What you can test: • Interactive elements: Modals, dropdowns, tooltips, popovers, and expandable panels, in any state • ARIA implementation: Custom widget attributes, live regions, aria-labels, and role correctness • Single-page apps: React, Angular, Vue, Svelte, Next.js, Remix, and any framework that renders client-side • Form validation: Error messaging, validation feedback, and required field indicators • Keyboard navigation: Tab order, focus traps, and keyboard-only usability Key features: • Real-time detection: Issues appear instantly as you interact with the page • Native DevTools panel: No separate app, no context switching • Code-level guidance: Exact HTML element, XPath, and step-by-step fix for every issue • Live region monitoring: Watch ARIA live regions announce updates as they happen • ACE™ Dashboard sync: Findings log automatically, de-duplicated against your ACE™ Scanner results Who it's for: • Front-end developers testing interactive features before opening a PR • QA engineers verifying that fixes actually work in a real browser • Accessibility consultants auditing interactive components • Teams building with React, Angular, Vue, or Svelte who need to test state changes and dynamic content Free to install, runs entirely in your browser, and no codebase changes required. Includes up to 3 scans per day at no cost. Upgrade to an ACE™ subscription for unlimited scanning, dashboard sync, and team collaboration. Learn more: https://www.accessibilitychecker.org/ace/extension/