Firefox 120 Released: Global Privacy Control and Clean Link Copying

What happened

Firefox 120 was released on November 21, 2023, first offered to Release channel users on that date according to the official Mozilla release notes. The update leaned heavily into privacy features while also advancing the web platform.

Privacy features

Firefox 120 added a Copy Link Without Site Tracking option in the context menu, ensuring copied links no longer contain tracking parameters, and a setting to enable Global Privacy Control, an opt-in signal that tells websites the user does not want their data shared or sold, enabled by default in private browsing. Private windows and the ETP-Strict configuration also gained fingerprinting protection for the Canvas APIs.

Regional and certificate changes

Mozilla began rolling out Cookie Banner Blocker by default in private windows for users in Germany, auto-refusing cookies and dismissing banners, and enabled URL Tracking Protection by default in private windows there. Firefox 120 also started importing user-added TLS trust anchors, such as certificates, from the operating-system root store, enabled by default on Windows, macOS and Android.

Web platform

For developers, Firefox 120 added the User Activation API for checking whether the user has interacted with a page, enabled Early Hints preconnect via the informational HTTP 103 status code to improve performance, and supported the CSS lh and rlh line-height units. Notably, it enabled WebAssembly GC by default, which allows languages such as Dart and Kotlin to run on Firefox and lets reference cycles between guest language and host browser be collected.

Why it mattered

Firefox 120 reinforced Mozilla's privacy-first positioning with Global Privacy Control, clean link copying and Canvas fingerprinting protection, while WebAssembly GC support expanded the range of languages that can target the browser. Together they advanced both user privacy and the capabilities of the web platform.

Related on Skillo

See also: Firefox 115 and its final Windows 7 support.

Sources

• Firefox 120.0 release notes (Mozilla)

Published date reflects the original event date (2023-11-21). This article is original Skillo editorial written from the sources above; facts were verified in September 2026.