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Meta referrer
Overview
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.
Specification
Keyword: referrer
The referrer metadata attribute can have one of four values:
never(Never include aRefererheader.)always(Always include aRefererheader.)origin(Use the document's origin in theRefererheader.)default(Use the user agent's default policy for whether to include aRefererheader.)
Examples
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">