Compare Firefox vs. Opera
Intro
Side-by-side comparison. View a complete list of features for both products. Firefox and Opera were reviewed, scored and ranked. This table contains a complete comparison. The result is that Opera is better. See the differences below.
1
2
Score
- Overall
- Speed
- Memory Usage
- Security
- Modern Standards
- Features
Speed
Startup Time (cold)
11.12
3.76
Startup Time (warm)
0.9
1.87
Page Load Time 1 (non cached)
1.37
2.16
Page Load Time 2 (non cached)
6.71
6.12
Page Load Time (refresh)
2.31
2.84
Omnibox Search
0.81
24.96
Memory Usage
Memory Usage (blank tab)
112
75
Memory Usage (10 open tabs)
504
330
Security
Pop-up Blocker
Anti-Virus
Anti-Phishing
Clear History
Private Browsing
Parental Controls
Modern Standards
HTML5 Compliance
503
457
CSS3 Compliance
60
54
Features
Tabbed Browsing
Bookmarks
Save Tabs
Autofill
Spell Check
Download Manager
Remember Passwords
Extensions
Themes or Skins
Mouse Gestures
Customize Fonts
Zoom
Full Screen
Synchronization
One Click Reset
Automatic Updates
Omnibox
Manage Search Engines
Search on Page
Search Box
Manual Proxy
Open Source
Help & Support
Online Knowledgebase
Help Manual
Tutorials
User Forum
Email Support
Supported Platforms
Windows
Mac OS
iOS
Android
Linux