Block sending Referrer information

[Erikuio]

to improve user privacy (like the other Things webrtc, Hyperlink, csp...)

for Firefox (about:config)
Normal Modus: network.http.referer.defaultPolicy (Standard = 3)
Private Modus: network.http.referer.defaultPolicy.pbmode (Standard = 2)

From version 53 onwards, Gecko has a pref available in about:config to allow users to set their default Referrer-Policy— network.http.referer.userControlPolicy.
From version 59 onwards (See #587523), this has been replaced by network.http.referer.defaultPolicy and network.http.referer.defaultPolicy.pbmode.
-> https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy

Chrome etc i dont know.

greetings

[huubert]

You could already do this by setting network.http.referer.XOriginPolicy to 2.
I've been using it for months and it didn't break any sites yet.