screen-reader-testing
Test web applications with screen readers including VoiceOver, NVDA, and JAWS. Use when validating screen reader compatibility, debugging accessibility issues, or ensuring assistive technology support.
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- Лиценз
- MIT
- Последна проверка на записа
- 20.09.2026 г.
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Screen Reader Testing
Practical guide to testing web applications with screen readers for comprehensive accessibility validation.
When to Use This Skill
- Validating screen reader compatibility
- Testing ARIA implementations
- Debugging assistive technology issues
- Verifying form accessibility
- Testing dynamic content announcements
- Ensuring navigation accessibility
Core Concepts
1. Major Screen Readers
| Screen Reader | Platform | Browser | Usage |
|---|---|---|---|
| VoiceOver | macOS/iOS | Safari | ~15% |
| NVDA | Windows | Firefox/Chrome | ~31% |
| JAWS | Windows | Chrome/IE | ~40% |
| TalkBack | Android | Chrome | ~10% |
| Narrator | Windows | Edge | ~4% |
2. Testing Priority
Minimum Coverage:
1. NVDA + Firefox (Windows)
2. VoiceOver + Safari (macOS)
3. VoiceOver + Safari (iOS)
Comprehensive Coverage:
+ JAWS + Chrome (Windows)
+ TalkBack + Chrome (Android)
+ Narrator + Edge (Windows)
3. Screen Reader Modes
| Mode | Purpose | When Used |
|---|---|---|
| Browse/Virtual | Read content | Default reading |
| Focus/Forms | Interact with controls | Filling forms |
| Application | Custom widgets | ARIA applications |
Before testing on macOS, read VoiceOver setup, commands, and checklists.
For the required iOS Safari coverage, read VoiceOver touch setup and gestures.
Before testing with NVDA, read NVDA setup, modes, commands, and test scripts.
Before testing with JAWS or TalkBack, read platform setup and commands.
Common Test Scenarios
1. Modal Dialog
<!-- Accessible modal structure -->
<div
role="dialog"
aria-modal="true"
aria-labelledby="dialog-title"
aria-describedby="dialog-desc"
>
<h2 id="dialog-title">Confirm Delete</h2>
<p id="dialog-desc">This action cannot be undone.</p>
<button>Cancel</button>
<button>Delete</button>
</div>