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Accessibility audit against WCAG 2.1 AA. Checks semantic HTML, ARIA, keyboard navigation, color contrast, screen reader compatibility.
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| name | a11y-check |
| description | Accessibility audit against WCAG 2.1 AA. Checks semantic HTML, ARIA, keyboard navigation, color contrast, screen reader compatibility. |
Evaluate user-facing work against WCAG 2.1 AA. Accessibility is a design constraint, not a polish step (Downe Principle 11).
| Stack | Tool | Command |
|---|---|---|
| React/Web | axe-core | npx axe <url> or axe-core in tests |
| Any web | Lighthouse | npx lighthouse <url> --only-categories=accessibility |
| Any web | pa11y | npx pa11y <url> |
| CI/CD | axe-linter | Add to CI pipeline |
| Violation | Fix |
|---|---|
| Missing alt text | Add descriptive alt or alt="" for decorative |
| Low color contrast | Increase contrast ratio to 4.5:1 minimum |
| Missing form labels | Add <label for="id"> or aria-label |
| No focus indicator | Add :focus-visible styles, never outline: none |
| Non-semantic buttons | Use <button> not <div onclick> |
| Missing heading hierarchy | Use h1-h6 in order, don't skip levels |
| Auto-playing media | Add pause/stop controls, respect prefers-reduced-motion |
