Mozilla
Menu
  • Twitter
  • Get Involved
Download Firefox Nightly

Firefox Nightly News

Let's improve quality, build after build!

  • Explore

Short but Sweet – These Weeks in Firefox: Issue 137

Niklas Baumgardner
May 5, 2023

Highlights aminomancer and Negin from the OMC team are making it possible to embed the new migration wizard nicely in about:welcome! This metabug tracks that effort. bnasar added support for … Read more

Firefox is shown with a non-default theme that has an image as a background. The image has lots of shifting colours a flowery motifs. The findbar is open at the bottom of the Firefox window, and the text input is focused.

Harder, Better, Faster, Stronger, Prettier – These Weeks in Firefox: Issue 136

Mike Conley
April 25, 2023

Highlights Itiel improved themes support for the findbar, previously there was very little contrast. Themes with background images have their images used in the findbar. Nicolas added media import condition … Read more

Gif of the extensions button being moved within the Firefox navigation bar via mouse drag and drop, which was never possible before until now

Jam-packed with Updates – These Weeks in Firefox: Issue 135

Katherine Patenio
April 14, 2023

Highlights In Firefox >= 113 users can now move the extensions button within the navigation toolbar while in Customize Mode (App Menu > More tools > Customize Toolbar) Hubert added … Read more

Dropping the Banner Hammer and More – These Weeks in Firefox: Issue 134

Niklas Baumgardner
April 14, 2023

Highlights Cookie Banner Handling can now be enabled in Nightly via about:preferences#privacy. This will enable the feature for both normal and private browsing. For more granular control you can use … Read more

The CSS rule pane from the Inspector DevTool is shown, with a "grid-template" rule selected. "subgrid" is shown as an item in an autocomplete panel.

Surf with more Perf(ormance) – These Weeks in Firefox: Issue 133

Mike Conley
March 7, 2023

Highlights The DevTools team has improved Pretty Printing performance in the Debugger by ~30%! This improvement is available in Beta and currently slated to go out in Firefox 111. Mak … Read more

Let’s Give You More Control(s) – These Weeks in Firefox: Issue 132

Cieara Meador
February 8, 2023

Highlights Dao has enabled the URL bar result menu in Nightly! This gives you more control over the results that appear. The improved video controls for Picture-in-Picture have been enabled … Read more

Screenshot of a new Firefox Profiler context menu option, particularly for viewing a source file called Interpreter.cpp.

A Variety of Improvements At January’s End – These Weeks in Firefox: Issue 131

Katherine Patenio
January 30, 2023

Highlights Issam and Micah have updated about:logins with some new UI improvements! Issam made it so search input is aligned with the logins list Micah added a new timeline component … Read more

New year, new updates to Firefox – These Weeks in Firefox: Issue 130

Niklas Baumgardner
January 24, 2023

Highlights Thanks to Alex Poirot’s work on Bug 1410932, starting from Firefox 110, errors raised from WebExtensions content scripts should be visible in the related tab’s DevTools webconsole Migrators for … Read more

A Firefox window is shown with the search term "mozilla" in the URL bar. The search term is persisted there even though the results have been loaded already in the content area. The search input has some informational text below it saying: "Searching just got simpler. Try making your search more specific here in the address bar. To show the URL instead, visit Search, in settings."

Search persistence, a new migrator and more! – These Weeks in Firefox: Issue 129

Mike Conley
December 15, 2022

Highlights James from the Search team has been working on persisting the search term in the address bar after you do a search in it. It is now enabled on … Read more

Image of an opensearch result appearing on Firefox's URL bar.

WebExtensions Mv3, WebMIDI, OpenSearch, PiP updates and more! – These Weeks in Firefox: Issue 128

Katherine Patenio
December 2, 2022

Highlights Initial WebExtension Manifest Version 3 support is riding the 109 release train For more information, please read this blog post Again, a reminder that Mozilla plans to continue support … Read more

More improvements than can fit into this title – These Weeks in Firefox: Issue 127

Niklas Baumgardner
November 22, 2022

Highlights Screenshots is getting an overhaul for Nightly! Check it out by flipping the `screenshots.browser.component.enabled` We’re starting to assemble and line up ideas for next steps for Screenshots. If you … Read more

The `grid-template-areas` portion of the Rules pane of the DevTools Inspector displays the names of the grid sections in a grid to make it easier to map their names to their locations.

A new release, a new button and much more – These Weeks in Firefox: Issue 126

Mike Conley
October 20, 2022

Highlights Firefox 106 went out today! Here are some blog posts talking about what is new, as well as the release notes! The Unified Extensions toolbar button (part of the … Read more

  • Previous
  • Page1
  • …
  • Page6
  • Page7
  • Page8
  • Page9
  • Page10
  • …
  • Page22
  • Next

Recent Posts

  • Three Cheers for Volunteers! – These Weeks in Firefox: Issue 211
  • Shoutout to More Layouts – These Weeks in Firefox: Issue 210
  • High-speed Release Trains – These Weeks in Firefox: Issue 209
  • The Need for Speed Controls – These Weeks in Firefox: Issue 208
  • Motion, Colour, Captions, Kit – These Weeks in Firefox: Issue 207

Recent Comments

  • Wellington Torrejais da Silva on The Need for Speed Controls – These Weeks in Firefox: Issue 208
  • Netss sam on Introducing Mozilla’s Firefox Nightly .rpm package for RPM-based linux distributions!
  • Colin McHugh on Extension Theming Improvements and More – These Weeks in Firefox: Issue 198
  • Thinkseal on Extension Theming Improvements and More – These Weeks in Firefox: Issue 198
  • sveta on Introducing Mozilla’s Firefox Nightly .deb Package for Debian-based Linux Distributions

Archives

  • October 2026
  • September 2026
  • August 2026
  • July 2026
  • June 2026
  • May 2026
  • April 2026
  • March 2026
  • February 2026
  • January 2026
  • December 2025
  • November 2025
  • October 2025
  • September 2025
  • August 2025
  • July 2025
  • June 2025
  • May 2025
  • April 2025
  • March 2025
  • January 2025
  • December 2024
  • November 2024
  • October 2024
  • September 2024
  • August 2024
  • July 2024
  • June 2024
  • May 2024
  • April 2024
  • March 2024
  • February 2024
  • January 2024
  • December 2023
  • November 2023
  • October 2023
  • August 2023
  • July 2023
  • June 2023
  • May 2023
  • April 2023
  • March 2023
  • February 2023
  • January 2023
  • December 2022
  • November 2022
  • October 2022
  • September 2022
  • July 2022
  • June 2022
  • May 2022
  • April 2022
  • March 2022
  • February 2022
  • January 2022
  • December 2021
  • November 2021
  • October 2021
  • September 2021
  • August 2021
  • June 2021
  • May 2021
  • April 2021
  • March 2021
  • February 2021
  • January 2021
  • December 2020
  • November 2020
  • October 2020
  • September 2020
  • August 2020
  • July 2020
  • May 2020
  • April 2020
  • March 2020
  • February 2020
  • November 2019
  • October 2019
  • September 2019
  • August 2019
  • July 2019
  • June 2019
  • May 2019
  • April 2019
  • March 2019
  • February 2019
  • January 2019
  • November 2018
  • October 2018
  • September 2018
  • August 2018
  • July 2018
  • June 2018
  • May 2018
  • April 2018
  • March 2018
  • February 2018
  • January 2018
  • December 2017
  • November 2017
  • October 2017
  • September 2017
  • August 2017
  • July 2017
  • June 2017
  • May 2017
  • April 2017
  • March 2017
  • February 2017
  • January 2017
  • December 2016
  • November 2016
  • October 2016
  • September 2016
  • August 2016
  • July 2016

Love the Web?

Get the Mozilla newsletter and help us keep it open and free.

We will only send you Mozilla-related information.

Thanks!

If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an e-mail from us.

Mozilla
Mozilla
  • About
  • Contact Us
  • Donate
    • Instagram (@mozillagram)
Firefox
  • Download Firefox
  • Desktop
  • Mobile
  • Features
  • Beta, Nightly, Developer Edition
    • YouTube (firefoxchannel)
  • Website Privacy Notice
  • Cookies
  • Legal

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.

Portions of this content are ©1998-2026 by individual contributors. Content available under a Creative Commons license.