Firefox 142 Web Browser Is Now Available for Download, Here’s What’s New

posted by Marius Nestor on Aug 18, 2025,
updated Aug 20, 2025

Firefox 142 introduces support for a flexible exception list in the Enhanced Tracking Protection (ETP) Strict mode, which should fix broken site features caused by tracker blocking. Exceptions are split into baseline (core functionality) and convenience (extra features), so you can opt for improved site compatibility without compromising key privacy protections.

Firefox 142 also introduces support for removing extensions from the sidebar by right-clicking the extension icon and selecting the new “Remove from Sidebar” option. On top of that, it improves the scroll speed in the Bookmarks dialog to not go beyond the component area and the drag-and-drop support for blob images.

Read on

Linuxiac:

• Firefox 142 Now Available for Download, Here’s What’s New

  Almost a month after releasing version 141, Mozilla has launched Firefox 142, the latest update to its popular open-source web browser, now available for download.

  One of the standout changes comes to Enhanced Tracking Protection in Strict mode, which now features a more flexible exception list. Instead of treating all blocked trackers the same, Firefox splits exceptions into two categories: baseline, which ensures core site functions work properly, and convenience, which covers additional features.

  For Windows users, clicking on a persistent notification when the browser is closed or restarted will now properly open Firefox with the relevant webpage, instead of just redirecting to the site’s homepage.

  On the customization front, Firefox 142 makes it easier to tidy up the interface. Extensions added to the sidebar can now be removed with a quick right-click, offering a faster way to manage what’s visible without digging through menus.

OMG Joey:

• Firefox 142 Adds New Tab Topics, Local Hey Hi (AI) in Extensions + More

  Mozilla has released Firefox 142, rolling out several features aimed at improving both user experience and developer functionality — and yes, Hey Hi (AI) is involved too. Last month, Firefox 141 added Hey Hi (AI) to the browser’s existing Tab Groups feature, although not without blowback from users who blamed it for degraded system performance. The same update added unit conversion in the URL bar, and reduced memory usage on Linux. For a look at what’s new in this month’s update, read on.

UbuntuHandbook:

• Firefox 142.0 Available with More Flexible ETP Strict Exceptions | UbuntuHandbook

  Firefox 142.0, the August release of the free open-source web browser, is available to download.

  The official release note for the new version is not ready at the moment of writing, though the source tarball and installers for Windows, Linux, and macOS are out!

  According to the Github releases page, Firefox 142.0 added new ETP stick mode options to automatically apply required exceptions to avoid website breakage. Exceptions are split into baseline (core functionality) and convenience (extra features). And, it’s also available when working in ETP Custom mode.

LWN:

• Firefox 142.0 released

  Version 142.0 of the firefox browser has been released. Changes include a new link preview feature (with optional "AI-generated key points"), and a "flexible exception list" for the strict tracking protection feature that allows relaxing specific protections on sites that otherwise will not work properly.