Browser Compatibility

Browser Compatibility

Complete browser compatibility information for the Accessibility Widget.

🌐 Supported Browsers

The Accessibility Widget is tested and works on all modern browsers. Below is a comprehensive compatibility matrix.

Desktop Browsers

Browser	Minimum Version	Full Support	Notes
Chrome	90+	✅ Yes	Best support, all features work
Edge	90+	✅ Yes	Excellent support (Chromium-based)
Firefox	88+	✅ Yes	Most features work, limited TTS
Safari	14+	✅ Yes	Full support on macOS
Opera	76+	✅ Yes	Full support (Chromium-based)

Mobile Browsers

Browser	Minimum Version	Full Support	Notes
Chrome Mobile (Android)	90+	✅ Yes	Full feature support
Safari iOS	14+	✅ Yes	Full support on iPhone/iPad
Samsung Internet	14+	✅ Yes	Full support
Firefox Mobile	88+	⚠️ Partial	Limited TTS support
Edge Mobile	90+	✅ Yes	Full support

📊 Feature Support Matrix

Core Features

Feature	Chrome	Firefox	Safari	Edge	Opera
Font Size Adjustment	✅	✅	✅	✅	✅
Contrast Modes	✅	✅	✅	✅	✅
Line Height	✅	✅	✅	✅	✅
Letter Spacing	✅	✅	✅	✅	✅
Font Family	✅	✅	✅	✅	✅
Color Blindness Filters	✅	✅	✅	✅	✅
Focus Indicator	✅	✅	✅	✅	✅
Stop Animations	✅	✅	✅	✅	✅
Underline Links	✅	✅	✅	✅	✅
Reading Guide	✅	✅	✅	✅	✅
Reading Mask	✅	✅	✅	✅	✅
Text Highlight	✅	✅	✅	✅	✅
Image Alt Text	✅	✅	✅	✅	✅
Persistent Settings	✅	✅	✅	✅	✅
Keyboard Navigation	✅	✅	✅	✅	✅

Advanced Features

Feature	Chrome	Firefox	Safari	Edge	Opera
Text-to-Speech	✅ Full	⚠️ Limited	✅ Full	✅ Full	✅ Full
TTS Rate Control	✅	⚠️	✅	✅	✅
TTS Pitch Control	✅	⚠️	✅	✅	✅
TTS Volume Control	✅	⚠️	✅	✅	✅
Multiple TTS Voices	✅	❌	✅	✅	✅
Word Highlighting	✅	⚠️	✅	✅	✅

Legend:

• ✅ Full support
• ⚠️ Partial support or limitations
• ❌ Not supported

🔍 Detailed Browser Information

Google Chrome

Versions Tested: 90, 100, 110, 120+

Support Level: ✅ Excellent

Features:

• All features fully supported
• Best TTS support with multiple voices
• Excellent performance
• Full Web Speech API support

Known Issues: None

Recommendations:

• Best browser for full feature experience
• Recommended for development and testing

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Mozilla Firefox

Versions Tested: 88, 100, 110, 120+

Support Level: ✅ Good (⚠️ Limited TTS)

Features:

• All core features fully supported
• Color blindness filters work perfectly
• Reading tools function well
• Limited TTS support (basic functionality only)

Known Issues:

• TTS has limited voice options
• Some TTS features may not work as expected
• TTS rate/pitch control may be limited

Recommendations:

• Works well for all features except advanced TTS
• TTS will work but with reduced functionality

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Safari (macOS)

Versions Tested: 14, 15, 16, 17+

Support Level: ✅ Excellent

Features:

• All features fully supported
• Excellent TTS support
• Native macOS voice integration
• Smooth performance

Known Issues: None

Recommendations:

• Excellent choice for macOS users
• Full feature support

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Safari (iOS)

Versions Tested: iOS 14, 15, 16, 17+

Support Level: ✅ Excellent

Features:

• All features fully supported
• Touch-friendly interface
• Responsive design works perfectly
• TTS works with iOS voices

Known Issues: None

Recommendations:

• Perfect for mobile users
• Full feature support on iOS devices

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Microsoft Edge

Versions Tested: 90, 100, 110, 120+

Support Level: ✅ Excellent

Features:

• All features fully supported (Chromium-based)
• Same excellent support as Chrome
• Full TTS support
• Excellent performance

Known Issues: None

Recommendations:

• Excellent alternative to Chrome
• Full feature support

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Opera

Versions Tested: 76, 90, 100+

Support Level: ✅ Excellent

Features:

• All features fully supported (Chromium-based)
• Same support as Chrome/Edge
• Full TTS support

Known Issues: None

Recommendations:

• Full feature support
• Good alternative browser

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📱 Mobile Browser Details

Chrome Mobile (Android)

Support: ✅ Full

• All features work perfectly
• Touch interface is responsive
• TTS works with Android voices
• Performance is excellent

Safari iOS

Support: ✅ Full

• All features work perfectly
• Native iOS integration
• Smooth animations
• TTS uses iOS voices

Samsung Internet

Support: ✅ Full

• Based on Chromium
• Full feature support
• Works like Chrome Mobile

Firefox Mobile

Support: ⚠️ Partial

• Core features work well
• Limited TTS support (similar to desktop Firefox)
• Other features function normally

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🚫 Unsupported Browsers

Internet Explorer

Status: ❌ Not Supported

Reason: IE is deprecated and doesn't support modern web standards required by the plugin.

Alternatives: Use Edge, Chrome, Firefox, or Safari

Older Browsers

Browsers older than the minimum versions listed above are not supported and may not work correctly.

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🔧 Browser-Specific Notes

Text-to-Speech (TTS)

Best Support:

• Chrome/Edge/Opera: Full support with multiple voices
• Safari: Full support with native voices

Limited Support:

• Firefox: Basic TTS works, but advanced features are limited

Mobile:

• iOS Safari: Uses iOS voices
• Chrome Mobile: Uses Android voices
• Firefox Mobile: Limited support

Color Blindness Filters

All Modern Browsers: ✅ Full support

• Uses SVG filters
• Works in all modern browsers
• May have slight performance impact on very large pages

localStorage (Settings Persistence)

All Modern Browsers: ✅ Full support

• Settings saved per domain
• Persists across sessions
• Works in all modern browsers

Note: Some browsers in private/incognito mode may clear localStorage when the session ends.

CSS Features

All Modern Browsers: ✅ Full support

• Modern CSS features used
• Responsive design works everywhere
• Animations and transitions supported

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🧪 Testing Recommendations

For Developers

1. Primary Testing:

   • Chrome (latest)
   • Firefox (latest)
   • Safari (latest)

2. Secondary Testing:

   • Edge (latest)
   • Mobile browsers (iOS Safari, Chrome Mobile)

3. Feature-Specific Testing:

   • Test TTS in Chrome and Safari (best support)
   • Test TTS in Firefox (limited support)
   • Test color filters on large pages (performance)

For Users

If you experience issues:

1. Update Your Browser:

   • Use the latest version of your browser
   • Enable automatic updates

2. Try a Different Browser:

   • Chrome or Edge for best TTS support
   • Firefox works well for most features
   • Safari for macOS/iOS users

3. Check Browser Settings:

   • Ensure JavaScript is enabled
   • Check that localStorage is allowed
   • Verify cookies are enabled

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📈 Browser Market Share Considerations

The plugin supports browsers used by 99%+ of users:

• Chrome: ~65% market share ✅
• Safari: ~20% market share ✅
• Edge: ~5% market share ✅
• Firefox: ~3% market share ✅
• Others: ~7% market share ✅

Coverage: Nearly all users can use the plugin with full or near-full functionality.

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🔄 Browser Update Policy

The plugin is tested against:

• Current stable versions of all major browsers
• Previous 2 versions for backward compatibility
• Beta versions for upcoming features

Recommendation: Always use the latest stable version of your browser for the best experience.

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⚠️ Known Limitations

Firefox TTS Limitations

• Limited voice selection
• Some TTS parameters may not work as expected
• Word highlighting may be less accurate

Workaround: TTS still works for basic text reading, just with reduced customization.

Performance on Large Pages

• Color blindness filters may slow down pages with many images
• Reading tools may have slight lag on very long pages

Workaround: Optimize images and consider disabling filters on very large pages.

Private/Incognito Mode

• Settings may not persist in some browsers' private modes
• localStorage may be cleared when session ends

Workaround: Use normal browsing mode for persistent settings.

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🆘 Browser-Specific Troubleshooting

Chrome Issues

Problem: Widget not appearing

Solution:

• Clear browser cache
• Check for extension conflicts
• Disable extensions temporarily

Firefox Issues

Problem: TTS not working

Solution:

• TTS has limited support in Firefox
• Try Chrome or Safari for full TTS features
• Basic TTS should still work

Safari Issues

Problem: Styles look different

Solution:

• Safari may render some CSS slightly differently
• Usually not a functional issue
• Test in other browsers to compare

Mobile Browser Issues

Problem: Touch not working

Solution:

• Ensure viewport meta tag is present
• Test on actual device, not just emulator
• Check for touch event conflicts

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📚 Related Pages

• Installation Guide
• Troubleshooting
• FAQ
• API Documentation

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🔗 Browser Update Links

Keep your browser updated:

• Chrome Updates
• Firefox Updates
• Safari Updates
• Edge Updates

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Last Updated: November 2025

Tested Browsers: Chrome 120, Firefox 121, Safari 17, Edge 120, Opera 105