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Reviewed comparison · verified 2026-09-16

FirefoxvsMullvad Browserin 2026

Choose Firefox as a daily browser with sync and add-ons; choose Mullvad Browser when fingerprinting resistance matters more than convenience.

33 documented facts compared 18 differ 15 identical
BrowserPedia mascot comparing browsers on balance scale

Head-to-head: Firefox versus Mullvad Browser

Firefox

Mozilla · United States

Mullvad Browser

Mullvad VPN · Sweden

Firefox: Mozilla's independent Gecko browser with strong customization, privacy controls, and a separate extension ecosystem.

Mullvad Browser: A hardened Firefox-based browser built with the Tor Project to minimise fingerprinting, intended for use with a VPN rather than the Tor network.

Key facts, on one axis

  • Yes
  • Partial
  • No
Gecko
Engine identical
Gecko
Built in
Blocks trackers identical
Built in
Built in
Anti-fingerprinting identical
Built in
Built in
Native ad blocking identical
Built in
Unsupported
Chrome Web Store identical
Unsupported
Built in
Sync across devices
Unavailable
Google
Default search
Configurable
macWinLinAndiOS
Platforms 5 vs 3 of 5
macWinLinAndiOS
4
Privacy & tracking /4
3
3
Extensions /4
0.5
8
Workflow & tabs /11
3
5
Platforms /5
3

A count of the capabilities each record documents in that category - half a point for partial support. It is a shape, not a score: BrowserPedia does not rank browsers.

Firefox profile Full records Mullvad Browser profile

What actually differs

See all 33 facts

  • Built-in VPN or proxy

    Only in Firefox · Privacy & tracking

  • Firefox Add-ons

    Only in Firefox · Extensions

  • Manifest V3

    Only in Firefox · Extensions

  • Manifest V2

    Only in Firefox · Extensions

  • Split view

    Only in Firefox · Workflow & tabs

  • Profiles

    Only in Firefox · Workflow & tabs

Firefox vs Mullvad Browser: every documented fact

Each row is a field from the two browser records. Open a row to read the documented note and its source. Categorical rows carry no colour, because one engine is not better than another.

33 documented facts · 18 differ · 15 identical

Fact
Firefox
Mullvad Browser

Privacy & tracking

built in
4/4
3/4

Extensions

built in
3/4
0.5/4

Workflow & tabs

built in
8/11
3/11

Platforms

built in
5/5
3/5

Foundation

Firefox vs Mullvad Browser: common questions

Do Firefox and Mullvad Browser use the same browser engine?
Yes. Firefox and Mullvad Browser both render with Gecko, so page rendering and web compatibility are largely the same. The differences between them are in defaults, bundled features and who ships the updates.
Which blocks trackers by default, Firefox or Mullvad Browser?
Both Firefox and Mullvad Browser document tracker blocking enabled by default.
Can Firefox and Mullvad Browser run Chrome extensions?
Neither Firefox nor Mullvad Browser documents Chrome Web Store support.
Does Firefox or Mullvad Browser have vertical tabs?
Both Firefox and Mullvad Browser document built-in vertical tabs.
What platforms do Firefox and Mullvad Browser run on?
Firefox is documented on macOS, Windows, Linux, Android and iOS. Mullvad Browser is documented on macOS, Windows and Linux.
Is Firefox or Mullvad Browser still actively developed?
Firefox is active and Mullvad Browser is active, as of the profile verification dates on this page.

Evidence sources

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BrowserPedia does not rank browsers by a universal score. The verdict is an editorial interpretation of the sourced facts above.

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