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Firefox Nightly
@firefoxnightly.bsky.social
Latest Firefox for Desktop development, live from Bugzilla!
https://firefox.com/nightly
Reposted by Firefox Nightly
The @firefoxdevtools.bsky.social JSON viewer got better in @firefoxnightly.bsky.social : the console offers access to the original json data via `$json`.
This allows to easily manipulate the underlying data to get what you want
November 7, 2025 at 11:40 AM
[Nightly Blog] Firefox 144 Highlights: Faster Add-ons, Smarter DevTools, and Tab Group Boosts – These Weeks in Firefox, Issue 189 blog.nightly.mozilla.org/2025/09/22/f...
Firefox 144 Highlights: Faster Add-ons, Smarter DevTools, and Tab Group Boosts – These Weeks in Firefox, Issue 189 – Firefox Nightly News
Highlights Leo Liu [:leoliu] added a panel for AntiTracking debugging (#1972771) behind devtools.anti-tracking.enabled Alexandre Poirot [:ochameau] added a User-defined badge in the markup view ...
blog.nightly.mozilla.org
September 22, 2025 at 2:31 PM
[Nightly Blog] Add-ons, Fixes, and DevTools Snacks – These Weeks in Firefox: Issue 188 blog.nightly.mozilla.org/2025/09/19/a...
Add-ons, Fixes, and DevTools Snacks – These Weeks in Firefox: Issue 188 – Firefox Nightly News
Highlights The Timer and TODO List widget are now available to be enabled in Firefox Labs on Nightly and Beta: Firefox Desktop about:addons add-on card view ...
blog.nightly.mozilla.org
September 22, 2025 at 9:40 AM
[Nightly Blog] Webcam previews and more! – These Weeks in Firefox: Issue 187 blog.nightly.mozilla.org/2025/09/12/w...
Webcam previews and more! – These Weeks in Firefox: Issue 187 – Firefox Nightly News
Highlights Nicolas Chevobbe added presentational hints in the Inspector's rule-view (#1212289)
blog.nightly.mozilla.org
September 22, 2025 at 9:34 AM
Firefox Security & Privacy newsletter 2025 Q2 | Attack & Defense
attackanddefense.dev/2025/07/17/f...
Firefox Security & Privacy newsletter 2025 Q2
Welcome to the Q2 2025 edition of the Firefox Security and Privacy newsletter!
attackanddefense.dev
September 2, 2025 at 10:10 AM
Reposted by Firefox Nightly
[Nightly Blog] Custom Profile Avatars Arrive in Nightly – These Weeks in Firefox: Issue 186
blog.nightly.mozilla.org/2025/08/04/c...
Custom Profile Avatars Arrive in Nightly – These Weeks in Firefox: Issue 186 – Firefox Nightly News
Highlights Custom avatar picker (and more icon choices) now available in Nightly Tab Groups: 1971230 - [meta] Preview collapsed tab group on hover coming to ...
blog.nightly.mozilla.org
August 5, 2025 at 7:09 AM
Happy sysadmin day!
xkcd.com/705/
Devotion to Duty
xkcd.com
July 25, 2025 at 12:03 PM
Reposted by Firefox Nightly
Just spotted: Firefox Nightly already supports view-transition-class from the Level 2 spec.
July 14, 2025 at 5:18 PM
Reposted by Firefox Nightly
The Text fragments creation UI was just activated in Firefox Nightly allowing you to share/reference a link anchor to any text snippet in a page bugzilla.mozilla.org/1970641
July 6, 2025 at 10:00 AM
A foxfooding campaign was just launched by Paul, one of our core community members to help us find bugs and rough edges to the new Drag to Pin feature. Everybody is welcome to join us do some testing and report bugs!

discourse.mozilla.org/t/foxfooding...

bsky.app/profile/fire...
June 20, 2025 at 2:51 PM
You can now drag a tab to your pinned tabs tray to pin it, or drag it out to unpin it.
bugzilla.mozilla.org/1944907
June 16, 2025 at 9:40 AM
Reposted by Firefox Nightly
State of CSS 2025 is now open: stateofcss.com

Browser vendors use the results of 'State of' surveys to help prioritize the features to work on.

If you care about CSS, please take some time to answer it, and help shape the future of the language
Redirecting to: /en-US
stateofcss.com
June 13, 2025 at 8:18 AM
Reposted by Firefox Nightly
🧪 Experiment with Temporal in @FirefoxNightly!

The New API has,
🗺️ Time Zone Support → Easy UTC conversions!
🧮 Precise Calculations → Leap years, daylight saving
✅ Built-in Parsing & Formatting → No need for third-party libraries

Start exploring 👇
developer.mozilla.org/en-US/docs/...
Temporal - JavaScript | MDN
The Temporal object enables date and time management in various scenarios, including built-in time zone and calendar representation, wall-clock time conversions, arithmetics, formatting, and more. It is designed as a full replacement for the Date object.
developer.mozilla.org
May 9, 2025 at 3:00 AM
[Nightly Blog] Keep on Rolling with Profile Improvements – These Weeks in Firefox: Issue 180 blog.nightly.mozilla.org/2025/05/05/k...
Keep on Rolling with Profile Improvements – These Weeks in Firefox: Issue 180 – Firefox Nightly News
Highlights Profile Management is rolling out as an experiment in Firefox 138 Notice any issues? Help us out by filing a bug report! Do you have ...
blog.nightly.mozilla.org
May 6, 2025 at 7:17 AM