Bytes by ui.dev·15wFirefox is cooking again
Firefox 147 shipped with major web platform features including Navigation API, CSS Anchor Positioning, and View Transition upgrades after Mozilla backtracked on AI-focused plans following user backlash. The release also includes updates on Vercel RSC vulnerabilities, Yarn 6 rewrite in Rust, Expo SDK 55 beta dropping legacy architecture support, and Node.js 25.5 adding simplified Single Executable App building.
omg! ubuntu!·16wFirefox’s Tab Notes Feature Feels Genuinely Useful (For Me, At Least)
Firefox is testing a Tab Notes feature that lets users attach small text notes to individual browser tabs. The feature helps users remember why they kept tabs open and is useful for research, shopping comparisons, or tracking context. It's currently available as an experimental feature in Firefox stable/beta (via about:config flag) and enabled by default in Nightly builds. This joins other upcoming Firefox improvements like Split Tabs and customizable keyboard shortcuts.
Adam Argyle·16wCustom Media · January 23, 2026
The @custom-media CSS feature is now available behind a flag in Firefox Nightly, allowing developers to define reusable media query aliases. The syntax enables creating named media queries like --motionOK for prefers-reduced-motion checks, making CSS more maintainable. Open Props library already includes around 45 ready-to-use custom media queries.