Discover some of the interesting features that have landed in stable and beta web browsers during October 2025.

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Chrome 142 and Firefox 144 released in October 2025 with significant web platform updates. Firefox 144 adds same-document view transitions (making them Baseline Newly available), command/commandfor attributes, and moveBefore() method. Chrome 142 introduces :target-before/:target-after pseudo-classes, range syntax for style container queries, and interestfor attribute for interest invokers. Beta releases include Firefox 145 with ToggleEvent.source and Atomics.waitAsync(), and Chrome 143 with CSS anchored fallback container queries.

New to the web platform in October