Launching Interop 2026
Summary
Interop 2026 is Mozilla's cross-browser initiative to improve web compatibility by selecting 20 focus areas from 33 proposals, plus 4 investigation areas, using Web Platform Tests and an interop dashboard to track progress across browsers. The article reviews 2025 outcomes, highlights new features like cross-document view transitions, scroll-driven animations, WebTransport, CSS container queries, and reliability improvements for existing features, and outlines 2026 investigations (Accessibility, Mobile testing, JPEG XL, WebVTT) and engagement with partner companies.