We are simplifying the VPN experience by making the Proton VPN browser extension available to free plan users on both Chrome and Firefox. With the extension, you connect to a VPN server and encrypt your connection with a single click—no app installation needed.

Find out more 👉
https://protonvpn.com/blog/browser-extension-free

Everyone can use Proton VPN’s Chrome and Firefox extensions for free | Proton

Anyone can use Proton VPN’s Chrome and Firefox browser extensions for free, making it easy to protect your privacy and bypass censorship.

Proton
@protonprivacy You should warn people that dns are leaking with the firefox version of this extension. Unfortunately, it's useful with chromium browsers only.
Firefox users should definitely use the old fashioned way to connect to your services.
@Kandy You can prevent this using steps 3. or 4. from our configuration guide: https://protonvpn.com/support/browser-extensions/
How to use the Proton VPN browser extension | Proton

Proton VPN’s browser extension provides a quick and convenient way to protect your privacy while browsing the internet.

Proton
@protonprivacy Thanks for your answer. I hadn't tried in a while, you must have changed something as I remember that it was leaking at the beginning. I've just re-tested it and it seems alright. That's great news as FF is my daily driver, I'm not quite fond of chromium browsers :)
THX !