Ad blocker for Mozilla Firefox
A modern ad blocker for Firefox that stays out of your way.
Firefox still supports full MV2 blocking APIs, so NovaBlock on Firefox has access to everything. It blocks ads, trackers, cookie banners and YouTube ads with zero configuration and a light UI.
Why NovaBlock on Firefox
- Full webRequest blocking on Firefox
- Dedicated YouTube module
- Cookie banner removal
- Free forever core protection
How to install on Firefox
- Open the Firefox Add-ons listing.
- Click 'Add to Firefox' → 'Add'.
- Pin NovaBlock to the toolbar (optional).
- Browse — protection is on by default.
Frequently asked questions
Does NovaBlock work on Firefox for Android?+
Yes. Firefox on Android supports extensions and NovaBlock installs the same way.
Do I still need Firefox's built-in tracking protection?+
You can keep both on. Firefox's protection is fine as a baseline; NovaBlock adds ad, cookie-banner and YouTube blocking on top.