Best Firefox extensions for security and privacy

Mozilla puts a strong emphasis on security and privacy by default, but not enough. The good news is that you can make Firefox even better with a few security and privacy enhancing extensions.

All the addons listed into this article are available on Firefox for desktops. Some of them are available on Firefox mobile, too. It’s a good practice to avoid redundant addons, because using multiple adblockers at the same time won’t make the sites overall cleaner than using a single good adblocker. Redundant addons will increase the likelihood of false positives, breaking sites.

These are the recommended Firefox extensions to improve your security and privacy.

uBlock Origin

uBlock Origin is a powerful extension providing filtering capabilities to block ads, trackers, malware domains and all kind of other stuff including JavaScript, WebRTC. Its filter lists also contain country/language specific lists and you can even import your own.

Bitwarden password manager

Bitwarden is no doubt one of the best password managers around, if not the best overall. It is free, it is open source, it is supported across all platforms be it desktops, mobiles, browsers.

Cookie quick manager is cookie manager extension to delete unwanted cookies. You can also see what cookies are used on each site you visit.


Decentraleyes is a complementary extension to adblockers, serving local resources like libraries instead of loading them from 3rd party sites such as Google Hosted Libraries, Microsoft Ajax CDN, CDNJS (Cloudflare), jQuery CDN (MaxCDN) and more.

Firefox Multi-Account Containers

Firefox Multi-Account Containers is an extension developed by Mozilla, which lets you keep separate identities and activities into isolated containers. For example, you can use it to isolate a social networking session into a single container to avoid being tracked all over the web. Or you can sign-in with different accounts, one in each container.

Privacy Settings

Privacy Settings addon works like a shortcut for some internal privacy settings in “about:config”, so you can toggle those settings on and off faster if you prefer.

If you use Chrome or other Chromium based browser, check my list of recommended security/privacy Chrome extensions

Do you know other security/privacy addons for Firefox that should be listed? leave a comment to let others know.

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