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Mozilla Automation Team2 min readrelease notesintro

More modern. More flexible. Still Firefox.

Read on mozilla.orgHN 107·159 comments

Summary

Mozilla rolled out Firefox 157 with a refreshed UI across desktop and mobile, adding Compact Mode, a theme picker, and a customizable New Tab page. The redesign claims no performance impact while keeping Firefox's privacy focus.

  • Firefox 157 ships a unified design language for desktop and mobile browsers.
  • Compact Mode returns, shrinking tabs and toolbars with an auto-compact option for small screens.
  • A new theme picker lets users choose colors, wallpapers, and UI themes.
  • The New Tab page now supports pinned shortcuts for quick access.

Anyone building extensions or UI components for Firefox should note the layout changes that may affect sizing and theming.

3/10
frontenduibrowserprivacydesign

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