Open-source and trustworthy VPN Firefox extension

  • Fast and reliable: Connect with one click and browse with peace of mind and no speed drops
  • Flexible: Protect just your browser traffic without affecting speeds or the IP address of the other apps on your device
  • Easy to use: Works on Firefox, LibreWolf, Waterfox, and many other Firefox-based browsers

How to set up and use Proton VPN’s Firefox extension

step 1

Buy a paid Proton VPN Plus account

To start using the Proton VPN browser extension on Firefox, you must have a paid Proton VPN Plus account.

With our paid plans, you can use Proton VPN on up to 10 devices at the same time, connect to over 6,200 high-speed servers in over 100 countries, and access premium features.

step 2

Download the extension and log in

  1. Search for and add the Proton VPN extension from the Firefox Add-ons.
  2. Once the app is installed on Firefox, run it and log in with your Proton VPN username and password. Proton Unlimited, Proton Familly and Proton Visionary users already have a Proton VPN account and can sign in with existing Proton credentials.

step 3

Connect to a server

You can automatically connect to the fastest VPN server for your location or choose to connect to any specific server that is available on your plan.

The data traveling between your device and the VPN server is encrypted, meaning:

  • Your internet service provider cannot monitor your activity.
  • Websites see the IP address of the VPN server you're using.

You can check your IP address whenever you're connected to find your VPN server's address.

Download Proton VPN for your device

Browse privately inside your browser

Convenient for streaming

  • Easy one-click connect
  • Stream films, sports events, and TV series on multiple streaming services worldwide (Netflix, Hulu, Amazon Prime Video, Disney+, HBO Max, and more)
  • Stream from different countries in different browsers

A flexible way to stay private online

  • Browse privately without affecting ping rates for online games
  • Stream from another country in one browser while shopping for the best local deals in a different browser
  • Browse privately on your work computer while connected to your company VPN

A professional VPN service

  • High-speed 10 Gbps server network
  • 6,200+ servers in 100+ countries
  • Use on 10 browsers or devices at the same time
  • Support from our expert customer service team

A fully-featured browser extension

  • Secure Core double VPN for additional security
  • Split tunneling to exclude specific websites
  • Auto connect to ensure your browsing sessions are always protected

Why choose Proton VPN?

When you use a VPN provider, you entrust your privacy to it.

Here's what sets us apart:

Strict no-logs policy

We keep no logs that can compromise your privacy, and Swiss law prevents us from being forced to log user activity.


We’re clear about where we’re based and who is on our leadership team. Our privacy policy is easy to understand, and we’re open about how we fund our free VPN service by charging for access to premium features.


Open-source apps mean you can check our code for yourself. Independent audits mean you can read an expert’s assessment.

Why choose the Proton VPN extension for Firefox

Proton VPN is brought to you by the team behind Proton Mail, the world's largest end-to-end encrypted email service. Millions of journalists, activists, and citizens worldwide rely on Proton VPN to stay safe.

Our VPN app for Firefox:

  • Protects your privacy by encrypting your internet connection
  • Enables you to bypass censorship and access the truth
  • Keeps no logs of user activity
    Get through your email faster, with
  • Lets you unblock and watch popular streaming services (Only with VPN Plus or Proton Unlimited plans)
  • Is open source and fully audited by third-party professionals

Trusted and recommended by the experts and our community

@ProtonVPN(new window) Wanted to thank you for the outstanding service your company offers - I have used vpn service over the years, and seen many. The speed and reliability of your client software surprised me, instantly - it's World Class, and better.
I highly recommend @ProtonVPN for an extremely secure VPN with a great reputation. And you can bundle it with @ProtonMail to make your email private instead of having google or yahoo, etc from scraping your inbox and selling your data

Try Proton VPN Plus risk-free

If you’re not satisfied, we’ll refund your payment in full within 30 days.

Frequently Asked Questions