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.

Learning resources on MDN

• Sec-Fetch-Dest
• Sec-Fetch-Mode
• Sec-Fetch-Site
• Sec-Fetch-User

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 16.4 Released on 2023-03-27
• Safari on iOS 16.4 Released on 2023-03-27

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