This document describes a proposal the "referrer" metadata name. Using the referrer metadata attribute, a document can control the behavior if the Referer HTTP header attached to requests that originate from the document.
The referrer metadata attribute can have one of four values:
Let directive be the value of the
content attribute with
LWS stripped from the beginning and end of the string and converted to lower case. If directive is none of the strings listed above, the user agent MUST act as if directive is the string
If the directive is a string other than
default, then Step 3 of Fetching resources in the HTML standard [HTML] is altered as follows:
This meta element instructs the user agent to omit the
Referer header in all HTTP requests that originate from the document containing the element:
<meta name="referrer" content="never">
This meta element instructs the user agent to include the document's origin in the
Referer header rather than the full URL of the document.
<meta name="referrer" content="origin">