LibreWolf vs Mullvad Browser: Privacy Comparison
This in-depth comparison weighs LibreWolf against Mullvad Browser along six decisive privacy dimensions: how data is collected, how encryption is implemented, how data is shared with third parties, what privacy controls users get, how transparent each service is, and what their historical track record looks like. The two cover much the same ground, yet they handle user privacy in very different ways. What our review shows is that Mullvad Browser delivers a clearly stronger privacy experience on balance, even though each option has its own relative pluses and minuses that are worth examining closely.
The Headline Finding
The most useful starting point is the overall tally and the single dimension that decided it. Across the six privacy dimensions we score, Mullvad Browser finishes ahead of LibreWolf, 49/60 to 37/60. That total reflects a side-by-side review in which one service is consistently the more privacy-respecting choice, even though both cover the same functional ground.
Most of the distance between these services opens up on Data Collection: LibreWolf 7/10 versus Mullvad Browser 9/10. On Data Collection the margin nearly vanishes: LibreWolf 7/10 against Mullvad Browser 9/10. Everything below justifies these totals dimension by dimension.
What Gets Collected
The starting point for judging privacy is always how data is collected. The amount of user data a service captures, keeps, and works with is the single biggest factor behind its privacy exposure. Mullvad Browser shows more discipline on this front, collecting nothing beyond the bare minimum needed for the service to run. The competing option reaches for a much wider set of data, including behavioral patterns, device identifiers, and usage analytics that stretch beyond the essentials. In this category we rated LibreWolf 7/10 and Mullvad Browser 9/10. The gap comes down to more than raw volume -- it is about the intent behind each piece of data and whether collecting it was ever justified.
Encryption Implementation
Encryption guards user data as it moves and while it sits at rest, and how well it is built differs enormously from one service to the next. Mullvad Browser puts tougher encryption in place, with sturdier protocols shielding data in transit and stronger safeguards for what is stored. The two implementations part ways on coverage (which data actually gets encrypted), on strength (which algorithms and key lengths back it up), and on whether end-to-end encryption is in play (which keeps even the provider from reading user content). For encryption, LibreWolf scored 8/10 while Mullvad Browser scored 10/10.
Sharing Data With Outside Parties
One of the most important privacy questions is how freely a service passes data along to others. The list of recipients can run from advertising networks and analytics providers to business partners and government requests. Mullvad Browser draws firmer limits around third-party access to user data. Such practices matter for security and not only privacy, because each new entity with access is another door through which a breach could occur. Scores: LibreWolf 4/10, Mullvad Browser 6/10.
What You Can Manage Yourself
The availability and effectiveness of user-facing privacy controls determine how much agency individuals have over their own data. This includes settings for data collection opt-out, download and deletion capabilities, granular permission controls, and the ease with which users can exercise their rights under applicable privacy regulations. Mullvad Browser provides more comprehensive and accessible privacy controls. Scores: LibreWolf 5/10, Mullvad Browser 7/10.
How Clearly They Explain Themselves
Transparency encompasses how clearly each service communicates its data practices. This includes the readability of privacy policies, the publication of transparency reports, responsiveness to privacy inquiries, and proactive communication about policy changes. Mullvad Browser demonstrates stronger transparency overall. Clear, accessible privacy communication is essential for informed consent and trust. Scores: LibreWolf 6/10, Mullvad Browser 8/10.
Historical Track Record
A service's history of privacy incidents, regulatory actions, and responses to vulnerabilities provides important context. Mullvad Browser has a stronger historical record on privacy, with fewer incidents and more responsible handling of the issues that have arisen. Past behavior is often the best predictor of future privacy practices. Scores: LibreWolf 7/10, Mullvad Browser 9/10.
Our Bottom-Line Call
Adding everything up, our full analysis lands LibreWolf at 37/60 and Mullvad Browser at 49/60. For privacy, the overall winner is Mullvad Browser. The two cover much the same functional ground, but the winner takes a more privacy-respecting stance across the dimensions that count for the most. Even so, no service is flawless, and whichever option you pick, you should always tune its privacy settings deliberately. We suggest pairing your choice with extra privacy tools, a VPN, DNS-level ad blocker, and privacy-focused browser, so you end up with a well-rounded privacy posture. And if your threat model demands the very highest level of privacy, it is worth asking whether an even more privacy-focused alternative exists in this category beyond the two compared here.