The same-origin SVG value specifies that a request’s full referrerURL is sent as referrer information when making same-origin-referrer requests.

Cross-origin-referrer requests, on the other hand, will contain no referrer information. A Referer HTTP header will not be sent.

same-origin

empty-string

no-referrer

no-referrer-when-downgrade

origin

origin-when-cross-origin

strict-origin

strict-origin-when-cross-origin

unsafe-url

World Wide Web Consortium (W3C)