HTMLLinkElement: referrerPolicy property
Baseline Widely available *
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.
* Some parts of this feature may have varying levels of support.
The referrerPolicy property of the HTMLLinkElement interface
reflects the HTML referrerpolicy attribute of the
<link> element defining which referrer is sent when fetching the
resource.
See the HTTP Referrer-Policy header for details.
Value
A string; one of the following:
no-referrer-
The
Refererheader will be omitted entirely. No referrer information is sent along with requests. no-referrer-when-downgrade-
The URL is sent as a referrer when the protocol security level stays the same (e.g.HTTP→HTTP, HTTPS→HTTPS), but isn't sent to a less secure destination (e.g., HTTPS→HTTP).
origin-
Only send the origin of the document as the referrer in all cases. The document
https://example.com/page.htmlwill send the referrerhttps://example.com/. origin-when-cross-origin-
Send a full URL when performing a same-origin request, but only send the origin of the document for other cases.
same-origin-
A referrer will be sent for same-site origins, but cross-origin requests will contain no referrer information.
strict-origin-
Only send the origin of the document as the referrer when the protocol security level stays the same (e.g., HTTPS→HTTPS), but don't send it to a less secure destination (e.g., HTTPS→HTTP).
strict-origin-when-cross-origin(default)-
This is the user agent's default behavior if no policy is specified. Send a full URL when performing a same-origin request, only send the origin when the protocol security level stays the same (e.g., HTTPS→HTTPS), and send no header to a less secure destination (e.g., HTTPS→HTTP).
unsafe-url-
Send a full URL when performing a same-origin or cross-origin request. This policy will leak origins and paths from TLS-protected resources to insecure origins. Carefully consider the impact of this setting.
Examples
const links = document.getElementsByTagName("link");
links[0].referrerPolicy; // "no-referrer"
Specifications
| Specification |
|---|
| HTML # dom-link-referrerpolicy |