Limited Availability Fetch

Fetch metadata request headers

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.

Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Jul 13, 2021.

Desktop Browser Engine Support

Google Chrome

80

Supported

Mozilla Firefox

90

Supported

Apple Safari

—

Unsupported

Microsoft Edge

80

Supported

Mobile Browser Engine Support

Chrome Android

80

Firefox Android

90

Safari iOS

—

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

http.headers.Sec-Fetch-Dest ↗ http.headers.Sec-Fetch-Mode ↗ http.headers.Sec-Fetch-Site ↗ http.headers.Sec-Fetch-User ↗