Mozilla is set to shake up the browser privacy space with a major new feature — a free, built-in VPN coming to Firefox version 149, launching on March 24, 2026. The move positions Firefox as one of the most privacy-forward browsers available, offering users a no-cost alternative to the often questionable world of free VPN services.
Unlike many so-called free VPNs that come loaded with hidden data-sharing practices and privacy tradeoffs, Mozilla is framing its implementation as one built on genuine privacy principles — the same principles that have long defined the Firefox browser.
Firefox 149 Free VPN — What It Does and Who Gets It First
The built-in VPN works by routing browser traffic through a secure proxy, effectively masking a user’s IP address and location during active browsing sessions. Crucially, there is no separate download or extension required — the feature is integrated directly into the browser itself.
At launch, the free tier will offer 50GB of monthly data, but availability will initially be limited to users in four countries — the United States, France, Germany, and the United Kingdom. This phased regional rollout suggests Mozilla is carefully monitoring performance, demand, and support needs before rolling the feature out more broadly.
Mozilla has not disclosed which underlying technical provider or infrastructure powers the VPN service. However, the company stressed that the offering is firmly rooted in its data minimization philosophy. Mozilla has long maintained that Firefox is designed so that even Mozilla itself should not know which websites its users visit. The company does not sell personal data and applies end-to-end encryption to synced browsing data — such as history and bookmarks — before any of it leaves a user’s device.
One important limitation to note: this VPN tool only protects browser traffic within Firefox. It does not provide full-device protection, meaning any internet activity outside of Firefox — other apps, downloads, or system-level connections — remains unaffected.
Firefox Doubles Down on Privacy With a Feature-Packed 149 Update
The free VPN is just one highlight of what appears to be a significant update for Firefox 149. Mozilla is also introducing several other features designed to improve usability and give users greater control over their browsing experience.
Split View will allow users to browse two websites side by side within a single window — a feature long requested by power users. Meanwhile, Tab Notes, available through Firefox Labs, gives users the ability to jot down notes directly within their browser tab environment.
The previously announced “AI Window” has been rebranded as “Smart Window” and repositioned as a fully optional, opt-in browsing assistant, reflecting Mozilla’s broader commitment to keeping AI features transparent and user-controlled.
Firefox also recently became the first browser to ship the Sanitizer API, a web security standard designed to block certain types of attacks before malicious content can reach users. These moves collectively reinforce Mozilla’s identity as a browser that prioritises security, privacy, and open standards over advertising technology and platform dependencies.
Unlike Chrome, Edge, and most other mainstream browsers, Firefox is built on Mozilla’s own open-source Gecko engine — not Google’s Chromium. That independence remains central to Mozilla’s pitch in an increasingly competitive browser market dominated by AI integrations, ad tech, and ecosystem lock-in.
With the addition of a free built-in VPN, Firefox now has a compelling new reason for privacy-conscious users to choose — or return to — the browser. As the March 24 launch date approaches, all eyes will be on how Mozilla executes one of its boldest feature rollouts in recent memory.