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Turn Tabs To Their Side – These Weeks in Firefox: Issue 177

Niklas Baumgardner
March 11, 2025

Highlights Firefox 135 goes to release today (Feb 4th)! Lots of great changes in this release! We’ve landed Bug 1936379 – Add Sidebar and Vertical Tabs checkboxes in about:preferences and … Read more

The JSON Viewer developer tool showing two very large numeric values. They are shown exactly as they're defined in the JSON, and then right next to them is an indicator displaying the numeric value that they were parsed to.

High Profile Improvements – These Weeks in Firefox: Issue 176

Mike Conley
March 5, 2025

Highlights Multiple profiles are now enabled by default in Nightly! Preffed on in Nightly only – upcoming 0.5% rollout in Beta and Release will be done via Nimbus File bugs … Read more

The Firefox New Tab page is shown with the browser logo in the top-left, the weather indicator in the top-right, and 4 columns of stories rather than 3.

New Year New Tab – These Weeks in Firefox: Issue 175

Mike Conley
January 24, 2025

Highlights Firefox 134 went out earlier this month! A refreshed New Tab layout is being rolled out to users in the US and Canada, featuring a repositioned logo and weather … Read more

Firefox on macOS: now smaller and quicker to install!

Ben Hearsum
January 23, 2025

Firefox is typically installed on macOS by downloading a DMG (Disk iMaGe) file, and dragging the Firefox.app into /Applications. These DMG files are compressed to reduce download time. As of … Read more

The "Manage Extension Shortcuts" pane from about:addons. A series of keyboard shortcut mappings for an extension is displayed - one of which is mapped to the F19 key.

Key Improvements – These Weeks in Firefox: Issue 174

Mike Conley
January 13, 2025

Highlights Nicolas Chevobbe [:nchevobbe] Added $$$ , a console helper that retrieve elements from the document, including those in the ShadowDOM (#1899558) Thanks to John Diamond for contributing changes to … Read more

Learning and Improving Every Day – These Weeks in Firefox: Issue 173

Niklas Baumgardner
December 6, 2024

Highlights Firefox 133 releases today! Lots of goodies in there, including Bounce Tracking Protection, GPU-accelerated canvas on Windows and more! Nicolas Chevobbe Enabled High Contrast Theme support (devtools.high-contrast-mode-support) on Nightly … Read more

Announcing Faster, Lighter Firefox Downloads for Linux with .tar.xz Packaging!

Heitor Neiva
November 28, 2024

We’re excited to announce an improvement for our Linux users that enhances both performance and compatibility with various Linux distributions. Switching to .tar.xz Packaging for Linux Builds In our ongoing … Read more

New Address Bar Updates are Here – These Weeks in Firefox: Issue 172

Katherine Patenio
November 19, 2024

Highlights Our newly updated address bar, also known as “Scotch Bonnet”, is available in Nightly builds! 🎉 See this Connect thread to find more details and share your feedback. We … Read more

Celebrating 20 years of Firefox – These Weeks in Firefox: Issue 171

Katherine Patenio
November 19, 2024

Highlights Firefox is turning 20 years old! Here’s a sneak peek of what’s to come for the browser. We completed work on the new messaging surface for the AppMenu / … Read more

a message with a cute fox illustration and a sign-up button in Firefox's app menu encouraging users to create a Mozilla account

Experimental address bar deduplication, better auto-open Picture-in-Picture, and more – These Weeks in Firefox: Issue 170

Katherine Patenio
November 19, 2024

Highlights A new messaging surface for the AppMenu and PXI menu is landing imminently so that we can experiment with some messages to help users understand the value of signing … Read more

The new tab page in Firefox is shown. The grid of stories is shown below the default set of top sites, and includes a new "tall" widget that spans several grid cells. That tall widget lists several stories vertically.

Search Improvements Are On Their Way – These Weeks in Firefox: Issue 169

Mike Conley
October 9, 2024

Highlights The search team is planning on enabling a series of improvements to the search experience this week in Nightly! This project is called “Scotch Bonnet”. We would love to … Read more

From ESR to Address Bar – These Weeks in Firefox: Issue 168

Katherine Patenio
September 24, 2024

Highlights ESR115 EOL was extended for Win 7-8.1 and macOS 10.12-10.14 to March 2025. See the firefox-dev post for more details. This doesn’t impact next month’s planned migration to ESR128 … Read more

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Recent Posts

  • Smarter Search, Smoother Tools – These Weeks in Firefox: Issue 190
  • Firefox 144 Highlights: Faster Add-ons, Smarter DevTools, and Tab Group Boosts – These Weeks in Firefox, Issue 189
  • Add-ons, Fixes, and DevTools Snacks – These Weeks in Firefox: Issue 188
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  • Custom Profile Avatars Arrive in Nightly – These Weeks in Firefox: Issue 186

Recent Comments

  • wbob on Introducing Mozilla’s Firefox Nightly .deb Package for Debian-based Linux Distributions
  • Kelly on High Profile Improvements – These Weeks in Firefox: Issue 176
  • oğuzhan on New Year New Tab – These Weeks in Firefox: Issue 175
  • rtz on High Profile Improvements – These Weeks in Firefox: Issue 176
  • Mike on Announcing Faster, Lighter Firefox Downloads for Linux with .tar.xz Packaging!

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