Not every monthly browser update feels like a milestone, far from it, but Firefox 147 is an exception to the rule. Released just a moment ago, on January 13, 2026, version 147 of the open source browser is not just another round of bug and security fixes — it is a comprehensive update that crosses some of the oldest items from the community’s wish list.
Whether you are a Linux user who has been waiting for 20 years for a cleaner home directory, a privacy advocate looking for improvements, or an AMD-GPU user who is now benefitting from decreased memory use and improved battery life during video playback.
Here are the five standout features in Firefox 147 that make this update essential.
- Closing a privacy loophole in Safe Browsing
- Site isolation support in Firefox for Android
- Local network protection in Strict Tracking Protection
- Zero-Copy Video benefitting video playback on AMD GPU systems
- XDG Base Directory Support
You can check out the
full release notes of Firefox 147 here. There you also find a link to the included security fixes, which, fix several issues rate high or lower, but none that appears to be exploited in the wild already.