Interop 2026 launches with collaboration between major browser vendors (Apple, Google, Microsoft, Mozilla, and Igalia) to improve cross-browser compatibility. The initiative includes 20 focus areas—15 new and 5 carryovers—covering features like anchor positioning, advanced attr(), container style queries, scroll-driven
Table of contents
Anchor positioningAdvanced attr()Container style queriescontrast-color()Custom HighlightsDialog and popover additionsFetch uploads and rangesgetAllRecords() for IndexedDBJSPI for WasmMedia pseudo-classesNavigation APIScoped custom element registriesScroll-driven AnimationsScroll Snapshape()View transitionsWeb CompatWebRTCWebTransportCSS ZoomInvestigation Efforts: A Look AheadA more interoperable webSort: