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mHeaderControl is a Firefox Plugin which provides features to manipulates HTTP headers of requests. Individual features can be turned on globally or on a per page basis.

mHeaderControl is a Firefox Plugin which provides a bunch of features to manipulates HTTP headers of requests.

Individual features can be turned on and off globally or on a per page basis.


Block Cookie SameSite
Removes all cookie headers from requests to resources with the same domain as the site.

Block Cookie 3rd-Party
Removes all cookie headers from requests to resources with a different domain as the site.
(Unfortunately, this feature is currently broken and blocks other cookies as well in certain circumstances.)

Allow CORS
Adds the "Access-Control-Allow-Origin" as well as "Access-Control-Allow-Credentials" header to all responses.

Remove Referer
Removes the referer from all requests.

Fake Referer
Removes the referer from all requests and replaces it with a referer which is the same as the requested resource.

Prevent Caching
Adds Cache-Control, Pragma and Expires header to prevent caching.

Disable CSP
Removes Content-Security-Policy header (and deprecated variants) to disable CSP.