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Katherine Patenio

Sep 11

The Need for Speed Controls - These Weeks in Firefox: Issue 208

Hi firefox-dev, We're back with more Firefox Desktop engineering updates. These updates follow

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The Need for Speed Controls - These Weeks in Firefox: Issue 208

Hi firefox-dev, We're back with more Firefox Desktop engineering updates. These updates follow

Sep 11

Sep 11

adding value to the biweekly firefox dev meeting

Hey all, TL;DR - What if teams bring a 1-2 sentence summary of their short-term goals, and a "

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adding value to the biweekly firefox dev meeting

Hey all, TL;DR - What if teams bring a 1-2 sentence summary of their short-term goals, and a "

Sep 11

Sep 8

Motion, Colour, Captions, Kit - These Weeks in Firefox: Issue 207

Hello firefox-dev, We're still catching up a bit on our backlog of meeting notes! These notes and

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Motion, Colour, Captions, Kit - These Weeks in Firefox: Issue 207

Hello firefox-dev, We're still catching up a bit on our backlog of meeting notes! These notes and

Sep 8

Sep 3

Introducing PerfCompare's Simple View

Hello everyone, We're excited to announce that PerfCompare has launched its simple view! It

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Introducing PerfCompare's Simple View

Hello everyone, We're excited to announce that PerfCompare has launched its simple view! It

Sep 3

Katherine Patenio

Aug 31

Firefox desktop development meeting - 2026-09-01

Hello Firefox fans, Here are the details for tomorrow's meeting: When: http://arewemeetingyet.com

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Firefox desktop development meeting - 2026-09-01

Hello Firefox fans, Here are the details for tomorrow's meeting: When: http://arewemeetingyet.com

Aug 31

Olivier (shtrom) Mehani

Aug 30

Old lando at https://lando.services.mozilla.com/ is going away

Hi all, tl;dr: * We have been using new Lando at https://lando.moz.tools/ since early 2025. * We are

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Old lando at https://lando.services.mozilla.com/ is going away

Hi all, tl;dr: * We have been using new Lando at https://lando.moz.tools/ since early 2025. * We are

Aug 30

Katherine Patenio

Aug 25

Icons! Lots of them! - These Weeks in Firefox: Issue 206

Hey Firefox devs, We're back with another issue of These Weeks in Firefox, where we share

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Icons! Lots of them! - These Weeks in Firefox: Issue 206

Hey Firefox devs, We're back with another issue of These Weeks in Firefox, where we share

Aug 25

Aug 17

Firefox desktop development meeting - 2026-08-18

Hello Firefox dev community! Here are the details for tomorrow's meeting: When: https://

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Firefox desktop development meeting - 2026-08-18

Hello Firefox dev community! Here are the details for tomorrow's meeting: When: https://

Aug 17

Andrea Marchesini

Aug 17

Translation coverage as a feature gate

Project Metronome reduces Firefox's release cycle to 2 weeks, halving the time localisation

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Translation coverage as a feature gate

Project Metronome reduces Firefox's release cycle to 2 weeks, halving the time localisation

Aug 17

Andrew Halberstadt

Aug 7

[PSA] Firefox tasks starting to clone from Github

Hey Firefox devs! Migration of Firefox's CI to Github is officially underway. If you inspect the

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[PSA] Firefox tasks starting to clone from Github

Hey Firefox devs! Migration of Firefox's CI to Github is officially underway. If you inspect the

Aug 7

Aug 5

nimbus-devtools 0.5 release

Good afternoon experimenters! We've got a new version of nimbus-devtools for you today, hot on

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nimbus-devtools 0.5 release

Good afternoon experimenters! We've got a new version of nimbus-devtools for you today, hot on

Aug 5

Aug 4

Firefox desktop development meeting - 2026-08-04

Hello Firefox fans! Here are the details for today's meeting (starting now!): When: http://

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Firefox desktop development meeting - 2026-08-04

Hello Firefox fans! Here are the details for today's meeting (starting now!): When: http://

Aug 4

Jul 28

nimbus-devtools 0.4 release

Good afternoon experimenters! We've got a new release of nimbus-devtools hot off the presses.

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nimbus-devtools 0.4 release

Good afternoon experimenters! We've got a new release of nimbus-devtools hot off the presses.

Jul 28

Olivier (shtrom) Mehani

Jul 27

Disabling Try support in old lando

Hi all, tl;dr: We are tentatively turning of Try support in old Lando. Please reach out to #Conduit

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Disabling Try support in old lando

Hi all, tl;dr: We are tentatively turning of Try support in old Lando. Please reach out to #Conduit

Jul 27

Gregory Mierzwinski

Jul 24

Frequency of Performance Regression Inactivity Needinfos Increasing to 3 Days

Hello, When a patch lands and causes a performance regression in our performance tests, authors are

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Frequency of Performance Regression Inactivity Needinfos Increasing to 3 Days

Hello, When a patch lands and causes a performance regression in our performance tests, authors are

Jul 24

Jul 21

Firefox desktop development meeting - 2026-07-21

Hello Firefox fans! Here are the details for today's meeting: When: http://arewemeetingyet.com/

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Firefox desktop development meeting - 2026-07-21

Hello Firefox fans! Here are the details for today's meeting: When: http://arewemeetingyet.com/

Jul 21

Jul 13

Firefox Security & Privacy Newsletter 2026 Q2

Welcome to the Q2 2026 edition of the Firefox Security & Privacy Newsletter. Security and privacy

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Firefox Security & Privacy Newsletter 2026 Q2

Welcome to the Q2 2026 edition of the Firefox Security & Privacy Newsletter. Security and privacy

Jul 13

Julian Descottes

Jul 10

allowMatchingRejectionsGlobally no longer persists after each browser-chrome mochitest

Hi all, With https://bugzilla.mozilla.org/show_bug.cgi?id=1655422, exceptions added by

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allowMatchingRejectionsGlobally no longer persists after each browser-chrome mochitest

Hi all, With https://bugzilla.mozilla.org/show_bug.cgi?id=1655422, exceptions added by

Jul 10

Andrew Halberstadt

Jul 9

Engineering Effectiveness Newsletter (Q2 2026 Edition)

Welcome to the Q2 edition of the Engineering Effectiveness Newsletter! The Engineering Effectiveness

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Engineering Effectiveness Newsletter (Q2 2026 Edition)

Welcome to the Q2 edition of the Engineering Effectiveness Newsletter! The Engineering Effectiveness

Jul 9

Sylvestre Ledru

Jul 9

Firefox release cadence experiment: moving to 2 weeks starting in September

Hi everyone, We are planning to move Firefox Desktop and Android from a 4-week release cadence to a 2

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Firefox release cadence experiment: moving to 2 weeks starting in September

Hi everyone, We are planning to move Firefox Desktop and Android from a 4-week release cadence to a 2

Jul 9

Jul 6

Firefox desktop development meeting cancelled for 2026-07-07

Hey all, Due to an intersecting MoCo meeting, we're cancelling the bi-weekly Firefox Desktop

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Firefox desktop development meeting cancelled for 2026-07-07

Hey all, Due to an intersecting MoCo meeting, we're cancelling the bi-weekly Firefox Desktop

Jul 6

Jul 1

Heads up: retiring the "early beta" period

In an effort to make Beta builds more representative of release candidate builds and avoid

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Heads up: retiring the "early beta" period

In an effort to make Beta builds more representative of release candidate builds and avoid

Jul 1

Beth Rennie, … Dan Mosedale6

Jun 25

Support for shared per-task setup and teardown in mochitest tests and xpcshell tests

Good news everyone! This should now be available in all xpcshell and mochitests. Support for

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Support for shared per-task setup and teardown in mochitest tests and xpcshell tests

Good news everyone! This should now be available in all xpcshell and mochitests. Support for

Jun 25

Jun 23

Firefox desktop development meeting - 2026-06-23

Hello Firefox fans! Earlier today we met to discuss recent developments in Firefox. Here are the

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Firefox desktop development meeting - 2026-06-23

Hello Firefox fans! Earlier today we met to discuss recent developments in Firefox. Here are the

Jun 23

Katherine Patenio

Jun 22

Eyedropper Quick Action, geckodriver 0.37, and Tighter File Permissions - These Weeks in Firefox: Issue 205

Hi Firefox fans, Here are the Firefox Desktop engineering notes from our June 9 meeting. We'll

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Eyedropper Quick Action, geckodriver 0.37, and Tighter File Permissions - These Weeks in Firefox: Issue 205

Hi Firefox fans, Here are the Firefox Desktop engineering notes from our June 9 meeting. We'll

Jun 22

Andrew McCreight

Jun 22

new JS actor registration property: safeForUntrustedWebProcess

Hello all, I have added a new property that you may need to use when registering a JS window or

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new JS actor registration property: safeForUntrustedWebProcess

Hello all, I have added a new property that you may need to use when registering a JS window or

Jun 22

Jun 16

Phabricator Data Reviews: remember to add the bug number

Hello! All new or expanded data collection in Mozilla projects are subject to Data Collection Review[

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Phabricator Data Reviews: remember to add the bug number

Hello! All new or expanded data collection in Mozilla projects are subject to Data Collection Review[

Jun 16

Katherine Patenio

Jun 15

Giving You More Control - These Weeks in Firefox: Issue 204

Hey Firefox fans, On May 26, 2026, the Firefox Desktop team met to discuss what's new in the

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Giving You More Control - These Weeks in Firefox: Issue 204

Hey Firefox fans, On May 26, 2026, the Firefox Desktop team met to discuss what's new in the

Jun 15

Jun 11

Intent-To-Unship: cookieBehavior LIMIT_FOREIGN (3) and REJECT_TRACKER (4)

We intend to remove support for two legacy cookie behaviors in Firefox: cookieBehavior=3 (

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Intent-To-Unship: cookieBehavior LIMIT_FOREIGN (3) and REJECT_TRACKER (4)

We intend to remove support for two legacy cookie behaviors in Firefox: cookieBehavior=3 (

Jun 11

Katherine Patenio

Jun 8

Firefox desktop development meeting - 2026-06-09

Hello Firefox fans! Here are the details for tomorrow's meeting: When: http://arewemeetingyet.com

unread,

Firefox desktop development meeting - 2026-06-09

Hello Firefox fans! Here are the details for tomorrow's meeting: When: http://arewemeetingyet.com

Jun 8

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