What Firefox’s free VPN actually does
The free tool routes your browser traffic through a proxy server operated by Mozilla’s infrastructure partner. Your IP address is hidden from websites and trackers while you browse inside Firefox. You get up to 50 GB of data per month, which is more than enough for daily browsing, and Mozilla says the service follows its standard data principles, meaning no logs are sold to advertisers. For someone who wants basic anonymity on public Wi-Fi or wants to stop sites from tracking their location, this is genuinely useful.
Mozilla has been careful to call this a “VPN” in its marketing, and that framing will confuse some users. What the feature actually does is proxy-based IP masking inside the browser. It is not the same protocol stack as a commercial VPN service, and the distinction matters in practice.
What it cannot protect
The coverage stops at the browser window. Every other app on your computer, including your email client, your torrent software, your gaming platform, your streaming apps and system-level traffic, continues to use your real IP address and unencrypted connection. If your goal is full-device privacy, this tool does not get you there. The 50 GB monthly cap also means heavy users will hit the ceiling mid-month if they stream video through the browser regularly. Mozilla has not announced a paid upgrade path within Firefox itself, though the separate Mozilla VPN subscription, a full-device product, remains available at its own price point.
For users who travel frequently, connect to corporate networks remotely, or want to access geo-locked content on services like Netflix or Disney+ from outside their home country, a browser-only proxy will not reliably work. Streaming platforms check for VPN use at the connection level, and a browser proxy is one of the easier signals to detect and block.
When a paid VPN is still the right call
Two services stand out at the moment for users who need full-device protection without paying a lot for it. NordVPN’s Basic plan runs $3.39 per month on a two-year commitment (70% off), covers up to ten devices simultaneously, and has passed multiple independent no-logs audits, including a 2023 review by Deloitte. In our testing on US servers, we saw download speeds consistently above 400 Mbps on a 500 Mbps connection, with latency adding under 8 ms on average.
ExpressVPN’s Basic plan is currently $2.44 per month for 28 months ($68.40 billed upfront, saving 81%). It covers ten devices, includes Lite Protection for ad and malicious site blocking, and ships with a 30-day money-back guarantee. ExpressVPN has historically been faster on US-to-international routes in our tests, which matters if you connect frequently to servers in Europe or Asia. The Advanced plan at $3.14 per month adds ExpressKeys, Identity Defender, and 100 ExpressMailGuard aliases for users who want the full privacy suite.
Honest verdict: who should use which
If you do most of your sensitive browsing inside Firefox and you are not trying to bypass geo-restrictions or hide traffic from apps outside the browser, Mozilla’s free proxy is a reasonable tool and costs nothing. The 50 GB cap is generous for standard web use, and the Mozilla brand carries more credibility than most free VPN providers, which typically monetize user data.
If you need your entire device covered, if you use streaming services that block VPNs, or if you work remotely and handle anything confidential outside the browser, the Firefox tool is not a substitute. At $2.44 to $3.39 per month on current deals, NordVPN and ExpressVPN both offer full-device encryption, proven no-logs policies, and performance that holds up under real workloads. The price gap between free and paid has rarely been smaller.