Interop

What it does

Interop is an annual cross-browser effort that aligns browser vendors on a shared set of focus areas and scores progress using web-platform-tests. It helps teams prioritize work on the same interoperability gaps and make year-over-year progress visible.

Who is it for

Browser engineering teams, standards contributors, and developer-relations teams who need a common target for improving compatibility across engines.

Where to find it

The project overview and yearly focus areas are published at interop.dev, and implementation progress can be tracked through linked test and dashboard resources.

Who is maintaining it

Interop is coordinated by major browser vendors and ecosystem partners, with collaboration across standards and testing communities.