Accessibility Testing

Consolidated: For comprehensive WCAG auditing with multi-tool testing (axe-core + pa11y + Lighthouse), video accessibility, and remediation, prefer /a11y-ally. This skill provides a quick reference card for basic accessibility testing patterns.

Browser engine

Browser-driven a11y checks should go through the qe-browser fleet skill. vibium a11y-tree --json returns the full accessibility tree without visual rendering — feed it into axe-core via vibium eval --stdin for ruleset enforcement. See .claude/skills/qe-browser/SKILL.md.

<default_to_action> When testing accessibility or ensuring compliance:

1. APPLY POUR principles: Perceivable, Operable, Understandable, Robust
2. TEST with keyboard-only navigation (Tab, Enter, Escape)
3. VALIDATE with screen readers (VoiceOver, NVDA, JAWS)
4. CHECK color contrast (4.5:1 for text, 3:1 for large text)
5. AUTOMATE with axe-core, integrate in CI/CD pipeline

Quick A11y Checklist:

• All images have alt text (or alt="" for decorative)
• All form fields have labels