Tools
Open a card for a full guide and a browser-only tool — no uploads, no server round trips. Curated external picks sit below.
In-browser tools
1 live · runs in your tabExternal picks
5 curated · opens in a new tabAccessibility Insights
Fast checks and guided assessments from Microsoft.
External Accessibility
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axe DevTools
Browser extension and APIs used in many CI pipelines.
External Accessibility
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Pa11y
CLI and dashboard-friendly automated accessibility testing.
External Accessibility
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WAVE
Visual feedback on structure, contrast, and ARIA on live pages.
External Accessibility
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WebAIM Contrast Checker
Check foreground/background contrast ratios against WCAG levels.
External Accessibility
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What “in-browser” means
Every built-in tool runs in your tab — no payload leaves your browser, no analytics tracks what you paste. Hashes use the Web Crypto API, JSON parses with the engine’s native parser, and tokens are decoded with atob plus a TextDecoder. We mention what each tool does not verify on its own page.