/accessibility-selenium-testing

WCAG 2.2 AA Manual Audit Checklist: Understandable, Robust, Assistive Tech

Part of the accessibility-selenium-testing skill. See SKILL.md for full context.

Related: this file was split from the original wcag21aa-checklist.md. See the other related files in this folder.

Understandable

Language of Page (3.1.1)

• <html lang="en"> (or appropriate language code)
• Language code matches content language

Language of Parts (3.1.2)

• Foreign phrases marked with lang attribute
• <span lang="es">Hola</span>

On Focus (3.2.1)

• Focus doesn't trigger unexpected context changes
• No auto-submit on focus
• No unexpected navigation on focus

On Input (3.2.2)

• Input doesn't trigger unexpected navigation
• Select menus don't navigate on change (unless noted)
• Radio buttons don't submit form

Consistent Navigation (3.2.3)

• Navigation appears in same relative order
• Main menu is consistent across pages
• Search is in the same location

Consistent Identification (3.2.4)

• Same functionality = same label
• Search icon always means search
• Icons are used consistently

Error Identification (3.3.1)

• Errors are identified in text (not just color)
• Error messages are associated with fields
• Error summary at top of form (optional but helpful)

Labels or Instructions (3.3.2)

• All inputs have visible labels
• Required fields are indicated
• Format requirements are stated (e.g., "MM/DD/YYYY")
• Character limits are indicated

Error Suggestion (3.3.3)

• Errors suggest corrections when known
• "Email is required" → "Enter your email address"
• "Invalid format" → "Enter date as MM/DD/YYYY"

Error Prevention (3.3.4)

• Financial/legal transactions:
  • Reviews submission before final
  • Confirms action with checkbox or dialog
  • Allows editing before submission
  • Provides undo capability

Robust

Parsing (4.1.1)

• Valid HTML (no duplicate IDs)
• Properly nested elements
• Complete start/end tags
• No obsolete attributes

Name, Role, Value (4.1.2)

• Custom controls have correct ARIA role
• Custom controls have accessible name
• State changes are announced (expanded, selected, checked)
• Dynamic updates are reflected in accessibility tree

Status Messages (4.1.3)

• Success/error messages use role="status" or role="alert"
• Loading indicators are announced
• Toast notifications are announced
• Messages don't require focus to be perceived

Assistive Technology Testing

Screen Reader Testing

Screen Reader Test Checklist

• Page title announced on load
• Landmarks are navigable (D key in NVDA)
• Headings are navigable (H key)
• Forms are labeled correctly
• Buttons announce action
• Links announce destination
• Images announce alt text
• Tables announce headers
• Dynamic content changes announced

Zoom Testing

• 200% zoom - no loss of content
• 400% zoom - content reflows
• Browser zoom and OS scaling
• Text-only zoom (if available)

High Contrast Testing

• Windows High Contrast Mode
• macOS Increase Contrast
• Forced Colors media query respected
• Focus indicators visible
• Icons visible

Reduced Motion Testing

• @media (prefers-reduced-motion: reduce) respected
• Animations can be disabled
• Parallax effects reduced
• Carousels pause