#FirefoxNightly
🧪 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
April 19, 2024 at 7:29 PM
“What happens when 4,500 people ask for the same feature? At Firefox, we build it.” man i wish Lmao

https://mastodon.social/@firefoxnightly/114453992606730961
Firefox Nightly (@firefoxnightly@mastodon.social)
You asked, we built it: Firefox tab groups are here https://blog.mozilla.org/en/firefox/tab-groups-community/
mastodon.social
May 5, 2025 at 8:38 AM
🧪 Experiment with Temporal in @FirefoxNightly!

The New API has,
✅ Time Zone Support – Easy UTC conversions!
✅ Precise Calculations – Leap years, daylight savings
✅ 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
March 10, 2025 at 11:00 AM
mastodon.social
May 25, 2026 at 10:16 AM
And it just became one of the few demos I've made to pass 500 ❤️ on CodePen!

And since FirefoxNightly now supports animating custom properties, it's fully functional there too! Soon, very soon, the animation with work in stable too!

#CSS
One of my most popular CodePen demos of the past month: cycling gradient text glow codepen.io/thebabydino/...

✨ very little #CSS + a simple #SVG filter
✨ no images whatsoever save for a CSS gradient
✨ no text duplication
✨ cycling gradient effect obtained just by animating a CSS variable
April 18, 2024 at 9:17 AM
The current @FirefoxNightly has a bit of a transparency issue with #darkreader plugin.

I'm looking forward to the next build that fixes it :)
October 8, 2025 at 10:14 AM
Les nouvelles du développement de @Firefox de @FirefoxNightly parlent de tester la vue scindée, d’ajouter des notes aux onglets, d’activer par défaut le nouveau lanceur de panneau latéral et ses améliorations visuelles et ergonomiques dans la version 148. ⤵️
February 3, 2026 at 3:28 PM
@pepikhipik.bsky.social @FirefoxNightly no já jsem se taky zděsil když to na mě dneska vyskočilo. Po odinstalování temného čtenáře už zas weby vypadají normálně.
V normálním firefoxu se ten problém neprojevuje ale já mám rád adrenalin, tak je firefox nightly můj primární browser :troll_face:
October 8, 2025 at 10:22 AM
Right now: funkot from polishedfriend and Firefoxnightly! Haven't tuned in yet? You've missed a bunch of amazing sets so far, so don't miss any more! We still have over 5 more hours of awesome music for you today!

twitch.tv/apathyfiretv
Timetable:
June 28, 2025 at 6:39 PM
In @firefoxnightly (not just nightly! ANY Firefox 141 or higher:
1. Type "about:config" in the address bar
2. Accept the warning (if applicable)
3. Search for "browser.ml.enable"
4. Set it to "false" (double click it)
5. Search for "browser.ml.chat"
6. Set "browser.ml.chat.enable" to false
7 […]
Original post on cloudisland.nz
cloudisland.nz
August 15, 2025 at 10:22 AM
Vous venez de passer à @FirefoxNightly ! #JourDeSorties
October 29, 2024 at 1:18 PM
RE: https://mastodon.social/@firefoxnightly/117246099806287453

Česká stopa ve Firefoxu: bugfix pro "Česká televize captions do not display in the Picture-in-Picture window"
https://bugzilla.mozilla.org/show_bug.cgi?id=2056714
mastodon.social
September 10, 2026 at 12:28 PM
July 21, 2026 at 9:25 PM
mastodon.social
July 17, 2026 at 6:09 PM
New Tab context menu in @firefoxnightly. I find it way cleaner, and less overwhelming.

Give it a go! Enable the “Streamlined tab menu” in `about:preferences#experimental`
July 14, 2026 at 9:49 AM
this has been the best @FirefoxNightly logo yet
December 5, 2024 at 5:55 AM
crashes @FirefoxNightly, Tweetdeck does not #bugreportfiled

Twitter.com
x.com
t.co
December 5, 2024 at 4:33 AM
As this feature stands today, there is no way to add alt text to the image and it is not included in the PDF/UA tag structure of the document.

I filed a bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=1844952

Probably do not use yet.

https://mozilla.social/@FirefoxNightly/110746369379398481
1844952 - Images imported to PDFs are not tagged, has no way to add alt text
UNCONFIRMED (nobody) in Firefox - PDF Viewer. Last updated 2023-07-22.
bugzilla.mozilla.org
July 22, 2023 at 6:56 PM
#Smíšené pocity ... #firefox @firefoxnightly

#linux #memory #popup
January 14, 2026 at 9:38 PM
RE: https://tech.lgbt/@linuxallday/115868175071870521

@firefoxnightly in my case :troll_face:
tech.lgbt
January 10, 2026 at 1:44 AM