Web features explorer

Fetch metadata request headers

Limited availability

The Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site, and Sec-Fetch-User HTTP headers provide extra information about the way a request was made, to help servers reject certain kinds of malicious requests.

Browser support

  • Chrome 80 Released on 2020-02-04
  • Chrome Android 80 Released on 2020-02-04
  • Edge 80 Released on 2020-02-07
  • Firefox 90 Released on 2021-07-13
  • Firefox for Android 90 Released on 2021-07-13
  • Safari Not supported Bugs: 247697
  • Safari on iOS Not supported Bugs: 247697

Baseline availability blocked since July 2021 by Safari (60 months)

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MDN documentation

Specifications

Web Platform Tests (WPT)

View the latest WPT test results for this feature

View as JSON | Edit this feature | Report an issue | Web-features entry: source, dist