Baseline 2023
Newly available
The HTTP Sec-Fetch-Mode
fetch metadata request header indicates the mode of the request.
Broadly speaking, this allows a server to distinguish between requests originating from a user navigating between HTML pages, and requests to load images and other resources. For example, this header would contain navigate
for top level navigation requests, while no-cors
is used for loading an image.
Sec-Fetch-Mode: cors
Sec-Fetch-Mode: navigate
Sec-Fetch-Mode: no-cors
Sec-Fetch-Mode: same-origin
Sec-Fetch-Mode: websocket
Servers should ignore this header if it contains any other value.
DirectivesNote: These directives correspond to the values in Request.mode
.
cors
The request is a CORS protocol request.
navigate
The request is initiated by navigation between HTML documents.
no-cors
The request is a no-cors request (see Request.mode
).
same-origin
The request is made from the same origin as the resource that is being requested.
websocket
The request is being made to establish a WebSocket connection.
If a user clicks on a page link to another page on the same origin, the resulting request would have the following headers (note that the mode is navigate
):
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: same-origin
Sec-Fetch-User: ?1
A cross-site request generated by an <img>
element would result in a request with the following HTTP request headers (note that the mode is no-cors
):
Sec-Fetch-Dest: image
Sec-Fetch-Mode: no-cors
Sec-Fetch-Site: cross-site
Specifications Browser compatibility See also
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4