This repository hosts the Web IDL Standard.

We are committed to providing a friendly, safe, and welcoming environment for all. Please read and respect the WHATWG Code of Conduct.

Good first issues are labeled as a short good first issue.

IDL generally follows the WHATWG Contributor Guidelines and WHATWG Committer Guidelines, except as otherwise noted.

The specification is written in Bikeshed, plus the Ecmarkup tags <emu-val>, <emu-t>, and <emu-nt>.

For quick local iteration, run make. To verify your changes locally, run npm install and make deploy. See more in the WHATWG Contributor Guidelines.

• Rendering engines
  • Gecko
  • WebKit
  • Chromium
• web-platform-tests
• idlharness.js (used by testharness.js to run IDL tests)
• Reffy (scrapes IDL from specs for reffy-reports and web-platform-tests)

• widlparser (used by Bikeshed)
• WebIDL parser (used by idlharness.js)
• TypeScript and JavaScript lib generator