Mullvad Browser Extension
Use the Mullvad Browser Extension beta for proxy support and IP or DNS leak checks in Firefox.
About Mullvad Browser Extension
Mullvad Browser Extension (beta) is a Firefox desktop add-on that works alongside Mullvad VPN. It shows browser connection details, checks for IP, WebRTC and DNS leaks, and routes browser traffic through a chosen Mullvad SOCKS5 proxy location with one click. It requires Firefox 91.1.0 or later, is not a VPN app, and is released as a beta.
Key features
- Check browser connection details
- Verify IP, WebRTC and DNS leaks
- Recommend HTTPS-Only and uBlock Origin
- One-click SOCKS5 proxy connection while using Mullvad VPN
Watch out for
- Beta release
- Firefox 91.1.0 and later on desktop only
- Not a VPN app and does not replace one
Mullvad Browser Extension at a glance
- Category
- Software & Utilities › Browser Extensions
- Type
- App
- Pricing
- Free
- Platforms
- Browser extension
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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