Groups

dev-platform@mozilla.org

1–30 of 1020

0 selected

Ryan VanderMeulen2

Dec 8

Soft code freeze for Firefox 147 starts on Thursday, December 4 @ 8am UTC

The version bump to 148 has now landed on firefox-main and the soft freeze period is over. Thank you,

unread,

Soft code freeze for Firefox 147 starts on Thursday, December 4 @ 8am UTC

The version bump to 148 has now landed on firefox-main and the soft freeze period is over. Thank you,

Dec 8

Dec 4

PerfCompare Statistics Project Update

Hello everyone, Perftools has successfully completed the first part of the PerfCompare Statistics

unread,

PerfCompare Statistics Project Update

Hello everyone, Perftools has successfully completed the first part of the PerfCompare Statistics

Dec 4

Emilio Cobos Álvarez

Dec 4

Intent to prototype and ship: overflow-clip-margin: <visual-box> and allow replaced elements to overflow their content box

Hi, In bug 1999100 I plan to (after the soft-freeze) land support for overflow-clip-margin: <

unread,

Intent to prototype and ship: overflow-clip-margin: <visual-box> and allow replaced elements to overflow their content box

Hi, In bug 1999100 I plan to (after the soft-freeze) land support for overflow-clip-margin: <

Dec 4

Emilio Cobos Álvarez

Dec 4

Intent to prototype and ship: rch, rex, rcap, and ric CSS units

Summary: Few new CSS units for root-relative font metrics. Other browsers already implemented these

unread,

Intent to prototype and ship: rch, rex, rcap, and ric CSS units

Summary: Few new CSS units for root-relative font metrics. Other browsers already implemented these

Dec 4

Jonathan Watt, … Emilio Cobos Álvarez3

Dec 3

Intent to ship: CSS Anchor Positioning

This is only the initial release (think of it as an MVP), so yeah, expect further updates to follow

unread,

Intent to ship: CSS Anchor Positioning

This is only the initial release (think of it as an MVP), so yeah, expect further updates to follow

Dec 3

Dec 2

Happy BMO Push Day! (20251202.1)

the following changes have been pushed to bugzilla.mozilla.org: (tag: https://github.com/mozilla-

unread,

Happy BMO Push Day! (20251202.1)

the following changes have been pushed to bugzilla.mozilla.org: (tag: https://github.com/mozilla-

Dec 2

Dec 2

Firefox Security Advisory Survey

Hello, We have recently proposed a reduction in the scope of Firefox security advisories through the

unread,

Firefox Security Advisory Survey

Hello, We have recently proposed a reduction in the scope of Firefox security advisories through the

Dec 2

Nov 24

Intent to Ship: Module Service Workers

This is an amendment to my previous email on the topic; I forgot to follow the standard template. (

unread,

Intent to Ship: Module Service Workers

This is an amendment to my previous email on the topic; I forgot to follow the standard template. (

Nov 24

Emilio Cobos Álvarez

Nov 23

Intent to prototype and ship: View transition types

Hi, In bug 2001878 I'm planning to implement view transition types. This is an extension to view

unread,

Intent to prototype and ship: View transition types

Hi, In bug 2001878 I'm planning to implement view transition types. This is an extension to view

Nov 23

Emilio Cobos Álvarez

Nov 22

Intent to prototype and ship: Document.activeViewTransition

Hi, In bug 2001836 I'm intending to land a minor extension to the view tranisitions API that

unread,

Intent to prototype and ship: Document.activeViewTransition

Hi, In bug 2001836 I'm intending to land a minor extension to the view tranisitions API that

Nov 22

Masayuki Nakano, … Martin Thomson5

Nov 20

Intent to change: Stop splitting user selected range to multiple ones for excluding non-selectable nodes

On 11/21/2025 1:26 PM, Martin Thomson wrote: I don't know if this is reasonable, but I see some

unread,

Intent to change: Stop splitting user selected range to multiple ones for excluding non-selectable nodes

On 11/21/2025 1:26 PM, Martin Thomson wrote: I don't know if this is reasonable, but I see some

Nov 20

Nov 20

Intent to ship: Synchronous initial about:blank

We intend to land synchronous initial about:blank soon in Firefox 147. This is a web-exposed change

unread,

Intent to ship: Synchronous initial about:blank

We intend to land synchronous initial about:blank soon in Firefox 147. This is a web-exposed change

Nov 20

Nov 20

HTTPS servers for xpcshell-tests

Hi folks, I would like to announce that we recently moved NodeServer classes from head_servers.js

unread,

HTTPS servers for xpcshell-tests

Hi folks, I would like to announce that we recently moved NodeServer classes from head_servers.js

Nov 20

Yoshi Cheng-Hao Huang, Nicolas Chevobbe2

Nov 18

Intent to prototype: Deferred Imports Evaluation

Thanks Yoshi for working on this Note that we do have a DevTools bug (https://bugzilla.mozilla.org/

unread,

Intent to prototype: Deferred Imports Evaluation

Thanks Yoshi for working on this Note that we do have a DevTools bug (https://bugzilla.mozilla.org/

Nov 18

Nov 13

Intent to ship: Iterator Sequencing

Iterator Sequencing will ship in Firefox 147, not 146 as originally planned. On Tue, Oct 14, 2025 at

unread,

Intent to ship: Iterator Sequencing

Iterator Sequencing will ship in Firefox 147, not 146 as originally planned. On Tue, Oct 14, 2025 at

Nov 13

Nov 13

Intent to ship: CSS Module Scripts

As of Firefox 147, I intend to enable support for CSS Module Scripts by default on all platforms. It

unread,

Intent to ship: CSS Module Scripts

As of Firefox 147, I intend to enable support for CSS Module Scripts by default on all platforms. It

Nov 13

Emilio Cobos Álvarez, Andrew McCreight3

Nov 12

PSA: Gecko now uses C++20

On Wed, Nov 12, 2025 at 10:47 AM 'Emilio Cobos Álvarez' via dev-pl...@mozilla.org <dev-

unread,

PSA: Gecko now uses C++20

On Wed, Nov 12, 2025 at 10:47 AM 'Emilio Cobos Álvarez' via dev-pl...@mozilla.org <dev-

Nov 12

Emily McDonough

Nov 10

text-decorationt-trim renamed to text-decoration-inset

The text-decoration-trim property (enabled in Firefox 146 by https://bugzilla.mozilla.org/1993043)

unread,

text-decorationt-trim renamed to text-decoration-inset

The text-decoration-trim property (enabled in Firefox 146 by https://bugzilla.mozilla.org/1993043)

Nov 10

Nov 10

Soft code freeze for Firefox 146 starts on Thursday, November 6 @ 8am UTC

The version bump to 147 has now landed on firefox-main and the soft freeze period is over. Thank you,

unread,

Soft code freeze for Firefox 146 starts on Thursday, November 6 @ 8am UTC

The version bump to 147 has now landed on firefox-main and the soft freeze period is over. Thank you,

Nov 10

Nov 10

Searchfox Update: Field layout for template, opt build data, GC hazard analysis, and TOML/YAML/moz.build support

Hello Searchfox users! We have multiple new features in Searchfox! (1) (alpha-only) Template super

unread,

Searchfox Update: Field layout for template, opt build data, GC hazard analysis, and TOML/YAML/moz.build support

Hello Searchfox users! We have multiple new features in Searchfox! (1) (alpha-only) Template super

Nov 10

Manuel Bucher, Lindsay Hall3

Nov 7

Intent to prototype: Storage-Access-Headers

Hi, The plan is to ship Storage-Access-Headers before or alongside "Strict Same-Origin policy

unread,

Intent to prototype: Storage-Access-Headers

Hi, The plan is to ship Storage-Access-Headers before or alongside "Strict Same-Origin policy

Nov 7

Nov 7

Intent to prototype and ship: Navigation API

As of Firefox 147, I intend to turn on support for the Navigation API for all platforms supporting

unread,

Intent to prototype and ship: Navigation API

As of Firefox 147, I intend to turn on support for the Navigation API for all platforms supporting

Nov 7

Emilio Cobos Álvarez, … Sam Davis Omekara3

Nov 6

Intent to prototype and ship: Untangle computed values of border / outline / column-rule widths and style

Thanks for the tag. As Kevin mentioned, aside from the inherit bug on the Blink side, we should be

unread,

Intent to prototype and ship: Untangle computed values of border / outline / column-rule widths and style

Thanks for the tag. As Kevin mentioned, aside from the inherit bug on the Blink side, we should be

Nov 6

Nov 6

PSA: Improvements to Uplift Requests in Lando

Hey folks, tl;dr: Lando uplift requests now support selecting multiple trains at once, run early

unread,

PSA: Improvements to Uplift Requests in Lando

Hey folks, tl;dr: Lando uplift requests now support selecting multiple trains at once, run early

Nov 6

Gregory Mierzwinski

Nov 4

Changes to CI Performance/Perfherder Data Ingestion

Hello, Over the last couple months, we've been working on moving all of our performance/

unread,

Changes to CI Performance/Perfherder Data Ingestion

Hello, Over the last couple months, we've been working on moving all of our performance/

Nov 4

Diego Escalante

Oct 31

Intent to Ship: Scoped Styles (@scope)

Summary: Scoped styles let users limit styling to DOM subtrees (Which can be further limited to a

unread,

Intent to Ship: Scoped Styles (@scope)

Summary: Scoped styles let users limit styling to DOM subtrees (Which can be further limited to a

Oct 31

Oct 31

A new way to run development builds with a temporary profiles.ini

When you run a development version of Firefox with `./mach run` it runs with a temporary profile but

unread,

A new way to run development builds with a temporary profiles.ini

When you run a development version of Firefox with `./mach run` it runs with a temporary profile but

Oct 31

Florian Quèze, Emilio Cobos Álvarez3

Oct 30

Crashes happening during tests just became easier to look at

On Wed, Oct 29, 2025 at 9:05 PM Emilio Cobos Álvarez <emi...@mozilla.com> wrote: I wonder if

unread,

Crashes happening during tests just became easier to look at

On Wed, Oct 29, 2025 at 9:05 PM Emilio Cobos Álvarez <emi...@mozilla.com> wrote: I wonder if

Oct 30

Vincent Hilla, Nicolas Chevobbe2

Oct 29

Intent to prototype: Document Picture-in-Picture API

Hello Vincent, I think you forgot to link to the bug that covers that work, if I'm correct this

unread,

Intent to prototype: Document Picture-in-Picture API

Hello Vincent, I think you forgot to link to the bug that covers that work, if I'm correct this

Oct 29

Oct 28

Firefox Security & Privacy Newsletter - Q3 2025

Welcome to the Q3 2025 edition of the Firefox Security and Privacy newsletter! Security and Privacy

unread,

Firefox Security & Privacy Newsletter - Q3 2025

Welcome to the Q3 2025 edition of the Firefox Security and Privacy newsletter! Security and Privacy

Oct 28

Search

Clear search

Close search

Google apps

Main menu