Chromium-based browser with Windows integration and AI features
Windows users, Microsoft 365 subscribers, power users needing tab organization, those requiring full extension support and perfect website compatibility
Privacy-focused independent browser with lightweight performance
Privacy-conscious users, older machines needing low memory footprint, those opposed to Google dependency, users prioritizing browser independence and values-aligned software
Edge offers better website compatibility and native tab groups through its Chromium foundation, while Firefox prioritizes privacy and uses significantly less memory, making them suited for different user priorities in 2026.
Choose Edge if you prioritize seamless website compatibility, use Microsoft services, want native tab group management, or need Chrome extension ecosystem access without limitations. Choose Firefox if privacy is your primary concern, you want browser independence from tech giants, prefer lightweight memory footprint for older machines, or value a truly non-profit browser aligned with user advocacy over corporate convenience.
Choose Microsoft Edge if
Windows users, Microsoft 365 subscribers, power users needing tab organization, those requiring full extension support and perfect website compatibility
| Metric | Microsoft Edge | Mozilla Firefox | Diff |
|---|---|---|---|
| Battery Life on MacBook (hours)(hours) | 11.8 hours | — | — |
| Memory Usage at Idle(MB) | 380 MB | — | — |
| Available Extensions(extensions) | ~200,000+ extensions | — | — |
| Memory Usage (10 open tabs)(MB) | ~450 MB | ~280 MB |
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Choose Mozilla Firefox if
Privacy-conscious users, older machines needing low memory footprint, those opposed to Google dependency, users prioritizing browser independence and values-aligned software
| +61% |
| Website Compatibility Rate(%) | 99.2% | 94.8% | +5% |
| Chrome Extension Compatibility(%) | 100% | ~87% | +15% |
| Users Needing Secondary Browser(%) | ~8% | ~35% | -77% |
All figures sourced from publicly available data. Last updated May 2026.
Microsoft Edge
~450 MB
Mozilla Firefox
~280 MB🏆
Microsoft Edge
99.2% (Chromium-based)🏆
Mozilla Firefox
94.8% (Firefox engine)
Microsoft Edge
Yes (full API)🏆
Mozilla Firefox
No
Microsoft Edge
Privacy secondary to convenience
Mozilla Firefox
Privacy as primary design goal🏆
Microsoft Edge
100% compatible🏆
Mozilla Firefox
~87% compatible
Microsoft Edge
Yes (Copilot integration)🏆
Mozilla Firefox
No
Microsoft Edge
No (Microsoft-backed, not Google-funded)
Mozilla Firefox
Yes (non-profit Mozilla foundation)🏆
Yes. Firefox consistently uses approximately 280 MB with 10 open tabs, while Edge uses around 450 MB under the same conditions. This makes Firefox 40% more efficient, particularly beneficial for users with older machines or limited RAM.
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| Attribute | Microsoft Edge | Mozilla Firefox |
|---|---|---|
| Platform Support(platforms) | 5 platforms (Windows, macOS, Linux, iOS, Android) | — |
| Website Compatibility Rate(%) | 99.2% | 94.8% |
| Users Needing Secondary Browser(%) | ~8% | ~35% |
| Battery Life on MacBook (hours)(hours) | 11.8 hours | — |
| Memory Usage at Idle(MB) | 380 MB | — |
| Memory Usage (10 open tabs)(MB) | ~450 MB | ~280 MB |
| Available Extensions(extensions) | ~200,000+ extensions | — |
| Chrome Extension Compatibility(%) | 100% | ~87% |
| Native Tab Group Support | Yes (full API) | No (extension-only) |
| Built-in AI Features | Yes (Copilot integrated) | No |
| Privacy-First Design | Secondary to convenience | Primary mission |
| Google Financial Dependency | None (Microsoft-backed) | None (non-profit funded) |
Side-by-side comparison of numeric attributes