Apple invites developers to submit browser interoperability ideas for Interop 2027
9to5mac.com Sep 7, 2026

Apple invites developers to submit browser interoperability ideas for Interop 2027

AI-summarised brief · reviewed before publication

Apple’s WebKit team has opened an open call for developers to submit ideas for Interop 2027, the next round of the initiative that aims to improve web‑technology consistency across browsers. Since its launch in 2022, Interop—building on the earlier Compat effort—has brought together Apple, Google, Microsoft, Mozilla, Bocoup and Igalia to identify and address interoperability gaps. The 2025 cycle raised test pass rates from 29 % to 97 % using Web Platform Tests. For 2026, the group selected 20 focus areas, including CSS, Navigation API, View Transitions, WebRTC and WebTransport, many sourced from community proposals. The call runs September 3‑23; submissions must target standards, with features relegated to “Interop Investigations.” Proposals are filed via GitHub, and contributors are urged to consolidate efforts on issues.

💡 Why It Matters

  • · By letting developers dictate the next set of interoperability targets, Apple turns the browser ecosystem into a collaborative testing ground, accelerating the rollout of consistent web features for users worldwide.