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wcag-audit-patterns

Audit websites against WCAG 2.2, guidelines for making web content accessible. Combine automated checks with manual verification to identify barriers, prioritize issues by impact, and guide fixes to page structure and interactive components.

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Conduct WCAG 2.2 accessibility audits with automated testing, manual verification, and remediation guidance. Use when auditing websites for accessibility, fixing WCAG violations, or implementing accessible design patterns.

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Good for

  • Audit a website for accessibility barriers
  • Review keyboard access and form labels
  • Fix contrast and heading structure issues
  • Establish accessible component patterns

Files included (2)

  • SKILL.md2.5 KB
  • references/details.md9.7 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

WCAG Audit Patterns

Comprehensive guide to auditing web content against WCAG 2.2 guidelines with actionable remediation strategies.

When to Use This Skill

  • Conducting accessibility audits
  • Fixing WCAG violations
  • Implementing accessible components
  • Preparing for accessibility lawsuits
  • Meeting ADA/Section 508 requirements
  • Achieving VPAT compliance

Core Concepts

1. WCAG Conformance Levels

LevelDescriptionRequired For
AMinimum accessibilityLegal baseline
AAStandard conformanceMost regulations
AAAEnhanced accessibilitySpecialized needs

2. POUR Principles

Perceivable:  Can users perceive the content?
Operable:     Can users operate the interface?
Understandable: Can users understand the content?
Robust:       Does it work with assistive tech?

3. Common Violations by Impact

Critical (Blockers):
├── Missing alt text for functional images
├── No keyboard access to interactive elements
├── Missing form labels
└── Auto-playing media without controls

Serious:
├── Insufficient color contrast
├── Missing skip links
├── Inaccessible custom widgets
└── Missing page titles

Moderate:
├── Missing language attribute
├── Unclear link text
├── Missing landmarks
└── Improper heading hierarchy

Detailed patterns and worked examples

Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.

Best Practices

Do's

  • Start early - Accessibility from design phase
  • Test with real users - Disabled users provide best feedback
  • Automate what you can - 30-50% issues detectable
  • Use semantic HTML - Reduces ARIA needs
  • Document patterns - Build accessible component library

Don'ts

  • Don't rely only on automated testing - Manual testing required
  • Don't use ARIA as first solution - Native HTML first
  • Don't hide focus outlines - Keyboard users need them
  • Don't disable zoom - Users need to resize
  • Don't use color alone - Multiple indicators needed

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