Web features explorer

WebTransport

Newly Available (since 2026-03-24)
Expected to be Widely Available on 2028-09-24

The WebTransport API transmits data between a client and a server, by using the HTTP/3 protocol.

Browser support (view on caniuse.com)

  • Chrome 97 Released on 2022-01-04
  • Chrome Android 97 Released on 2022-01-04
  • Edge 97 Released on 2022-01-06
  • Firefox 114 Released on 2023-06-06
  • Firefox for Android 114 Released on 2023-06-06
  • Safari 26.4 Released on 2026-03-24
  • Safari on iOS 26.4 Released on 2026-03-24

MDN documentation

Specifications

Usage (according to Chrome Platform Status)

~0.003% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

Interop

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