Firefox Nightly

Copy Link to Highlight in Nightly – These Weeks in Firefox: Issue 185 – Firefox Nightly News Highlights 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 https://mastodon.social/@firefoxnightly/...

[Nightly Blog] Copy Link to Highlight in Nightly – These Weeks in Firefox: Issue 185
blog.nightly.mozilla.org/2025/07/28/c...

As of bugzilla.mozilla.org/1944719 this is now possible

Devotion to Duty

Happy sysadmin day!
xkcd.com/705/

A test page that shows which features of the View Transition API your browser supports, here showing Firefox Nightly (142). It supports not only same-document view transitions but also the view-transition-class property that is specified in the Level 2 specification.

Just spotted: Firefox Nightly already supports view-transition-class from the Level 2 spec.

Shipping WebGPU on Windows in Firefox 141 After years in development, we will be releasing WebGPU on Windows in Firefox 141! WebGPU gives web content a modern interface to the user’s graphics processor, enabling high-performance comp…

Shipping WebGPU on Windows in Firefox 141 – Mozilla Gfx Team Blog
mozillagfx.wordpress.com/2025/07/15/s...

wiki.mozilla.org/Nightly#Fili...

Please file a bug to ask for this feature, thanks:

Sidebar settings where you can disable extensions

It's already possible.

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

Highlights from Volunteer Contributors – These Weeks in Firefox: Issue 184 – Firefox Nightly News Highlights Some Picture-in-Picture improvements have landed recently from some volunteer contributors, and should be going out in Firefox 141 on July 22nd: Thanks to new contributor nrcrast for .....

[Nightly Blog] Highlights from Volunteer Contributors – These Weeks in Firefox: Issue 184 blog.nightly.mozilla.org/2025/07/01/h...

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...

Absolute Unit of an Update – These Weeks in Firefox: Issue 183 – Firefox Nightly News Highlights Henrik removed all the code related to our experimental CDP (Chrome DevTools Protocol) implementation for browser automation. We also published a fxdx.dev blog post to explain what this ....

[Nightly Blog] Absolute Unit of an Update – These Weeks in Firefox: Issue 183
blog.nightly.mozilla.org/2025/06/18/a...

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

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

One-time permissions are here to stay! - Advancing WebRTC One-time camera and microphone permissions are now in Chrome (since M116), joining Firefox and Safari. This means that per-session permissions are now available to use cross-browser. Chrome calls the ...

[WebRTC] One-time permissions are here to stay! blog.mozilla.org/webrtc/one-t...

Smarter Searches – These Weeks in Firefox: Issue 182 – Firefox Nightly News Highlights The Search team has enabled the new URL bar search experience by default 🎉 and fixed action mode layout. See bugs: 1967857, 1967721 Check out this blog ...

[Nightly Blog] Smarter Searches – These Weeks in Firefox: Issue 182
blog.nightly.mozilla.org/2025/06/06/s...

Please open a bug thanks! wiki.mozilla.org/Nightly#Fili...

New Extension Data Consent Experience now available in Firefox Nightly
blog.mozilla.org/addons/2025/...

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.

🧪 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/...

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 ...

[Nightly Blog] Keep on Rolling with Profile Improvements – These Weeks in Firefox: Issue 180 blog.nightly.mozilla.org/2025/05/05/k...

WebExtensions Support for Tab Groups
blog.mozilla.org/addons/2025/...

Please open a ticket wiki.mozilla.org/Nightly#I_fo... Thanks!

You asked, we built it: Firefox tab groups are here  | The Mozilla Blog What happens when 4,500 people ask for the same feature? At Firefox, we build it. Tab groups have long been the most requested idea on Mozilla Connect –

You asked, we built it: Firefox tab groups are here
blog.mozilla.org/en/firefox/t...

A Tab Groups Scoop – These Weeks in Firefox: Issue 179 – Firefox Nightly News Highlights The WebExtensions team is fast-tracking support for “tab groups”-related updates to the tabs API (the updates have landed in Nightly 139 and been uplifted to Beta 138) ...

[Nightly Blog] A Tab Groups Scoop – These Weeks in Firefox: Issue 179 blog.nightly.mozilla.org/2025/04/23/a...

Thanks, I'll check that with our comms team.

I don't understand the request, where should that be added?

Yes

Hardening the Firefox Frontend with Content Security Policies
attackanddefense.dev/2025/04/09/h...

✅ Support ::details-content pseudo-element and improved styling of <details> element
bugzilla.mozilla.org/show_bug.cgi...

✅Implement auto-expanding <details>

bugzilla.mozilla.org/show_bug.cgi...