Firefox Nightly News

Highlights The WebExtension team has made changes to the add-on install flow: in Firefox >= 100 user activation/interaction is now required to successfully trigger the add-on installation flow – Bug … Read more

Highlights Picture-in-Picture captions/subtitles support is now enabled by default on Nightly! Supported sites include YouTube, Netflix, Prime Video, and others that use WebVTT The Firefox Profiler supports date format changes … Read more

Highlights The Firefox Profiler team has added a dynamic language switcher! (#3905, #3910) Volunteer contributor aminomancer changed the default seek time for video and audio elements (and for when using … Read more

Highlights Several new updates for DevTools CSS Property Value: Colin Cazabet added the ability to increase/decrease a CSS property value (e.g. dimensions) by dragging the mouse over the CSS property … Read more

Highlights Since the compatibility panel is also riding the 98 train, we polished it a bit: we added support for Internet Explorer 11 data (bug), reworked the tooltip for compatibility … Read more

Highlights Reminder: FOSDEM 2022 is happening the week after (February 5 & 6), and is free to (virtually) attend! Lots of great talks from Mozilla and others. Infrastructure for site-specific … Read more

Highlights DevTools now supports an “auto” theme (now the default). It follows the browser’s color scheme, so if you have a dark theme for your browser, DevTools will also have … Read more

Highlights We’re planning on shipping Credit Card Autofill to the UK, France, and Germany in Firefox Nightly 97! (bug) MSU students just wrapped up a capstone project to improve high … Read more

Highlights Starting from Firefox 96, a new “browser.runtime.getFrameId” method allows an extension content script to retrieve the frameId associated to a WindowProxy of an embedder DOM element (e.g. frame, object … Read more

Highlights A big thank you to all the Outreachy applicants who applied for this cycle. We had 38 applicants with approximately 110 contributions between them. Special shout-out to Antonin, a … Read more

Highlights The current plan is to begin the slow rollout of Fission (Site Isolation in Firefox) next week for users on the release channel We enabled the new downloads experience … Read more