The stable channel now has Firefox 149.0 from Mozilla This article explores stable channel firefox. . The update adds a lot of privacy-first features, with a free VPN service that is now built in being the most important one.

The built-in VPN is meant to keep users safe, especially when they are connected to public or untrusted networks. Mozilla is giving away 50 GB of protected browsing data every month for free. This makes it one of the few popular browsers that has a built-in VPN. The browser now uses SafeBrowsing intelligence to automatically block requests for background notifications from websites that are known to be harmful.

The TrustPanel makes things more clear and easier to use by putting all of the privacy and security settings in one place that can be accessed directly from the address bar.

The update adds support for the Reporting API, which makes it easier for web apps to report violations of the Content Security Policy and use of old features. The XDG portal file picker makes it easier for Linux users to use their desktops. Windows systems now use the modern Windows.The Devices.Geolocation API makes location services better.

Finally, Firefox149.0 fixes a number of security holes, as detailed in Mozilla's MFSA2026-20 advisory. This makes the browser more secure and stable overall. It also adds a Split View feature, which lets users show two web pages next to each other in the same window. There are also performance improvements, such as more reliable HTTP/3 uploads when the network is unstable and faster PDF rendering thanks to hardware acceleration.

This change is part of a larger strategy to protect against attacks by making surfaces less vulnerable.