Opera as a Linux alternative to Mozilla Firefox

Updated October 22, 2026

Our verdict

Opera GX is a solid replacement for Firefox if you want built-in resource limits, a free VPN, and integrated social apps without installing extra software. It handles modern web standards well and runs stably on Linux. However, it is proprietary, so it lacks the open-source transparency Firefox offers. Extension compatibility is high due to Chromium, but sync is locked to Opera accounts. If you prioritize privacy, open code, or syncing with non-Opera devices, stick with Firefox. For gamers or users wanting all-in-one convenience, Opera is a capable, if closed, alternative.

Feature parity85%

License: LicenseRef-proprietary=https://www.opera…
Price: Free
Latest version: 137.0.6036.65 (October 15, 2026)
Rating: —

Install Opera Website ↗

Opera screenshot — Speed dial page - dark theme

What works the same

Renders HTML, CSS, and JavaScript using modern web standards
Supports bookmark and password import/export from other browsers
Offers privacy controls including tracker blocking and ad blocking
Provides stable performance on Linux desktop environments

What is different

Proprietary license versus Firefox's open-source model
Sync features are limited to Opera accounts, not cross-browser
Includes integrated social media sidebar and gaming tools
Lacks the extensive, community-driven extension ecosystem of Firefox

Opening your Mozilla Firefox files

Opera can import bookmarks, passwords, and history directly from Firefox during initial setup or via its import wizard. It supports standard formats like HTML for bookmarks and CSV for passwords. You can export your data from Firefox first if you prefer a manual transfer. Opera does not natively read Firefox's internal profile database files, so direct file copying is not supported; use the import tools instead.

Switching from Mozilla Firefox to Opera, step by step

Export bookmarks and passwords from Firefox to HTML and CSV files
Install Opera GX via Flatpak or the official .deb package
Launch Opera and select 'Import from Firefox' in the initial setup
Verify that all extensions have been converted or find Chromium equivalents
Set up Opera Sync to back up your new profile

Key features of Opera

GX Control to limit RAM, CPU, and network usage
Integrated sidebar for Discord, Twitch, and other social apps
Built-in ad blocker and free VPN
Hot Tabs Killer to identify and close resource-heavy tabs
GX Mods for custom themes, sounds, and wallpapers
Split-screen browsing and video pop-out windows
Panic Button (F12) to hide the browser window instantly
Cryptomining protection and tracker blocking

How to install Opera on Linux

Flatpak (Flathub)flatpak install flathub com.opera.opera-gx

openSUSEsudo zypper install opera

Frequently asked questions

Will my Firefox extensions work in Opera?

Most will work because Opera is Chromium-based, but you may need to install the Chromium version of the extension from the Chrome Web Store or Opera Add-ons store. Firefox-specific APIs are not supported.

Is Opera GX free?

Yes, Opera GX is free to download and use. It is funded by advertising and optional premium services, but the core browser features, including the free VPN, are available without payment.

Can I sync Opera with Firefox?

No, Opera Sync only works with other Opera browsers. You cannot sync tabs, history, or settings directly between Opera and Firefox. You would need to manually export and import data periodically.