The features browsers agreed to fix together in 2026, with each browser's score.

Interop 2026 is the dashboard for this year's cross-browser effort by Apple, Google, Igalia, Microsoft and Mozilla. Each browser is scored by its pass rate on selected web-platform-tests for each focus area.
CSS focus areas include anchor positioning, container style queries, scroll-driven animations, view transitions, attr(), contrast-color(), shape(), custom highlights, scroll snap and zoom. Dialogs and popovers, the Navigation API and WebRTC are among the others.
Baseline