The HTMLIFrameElement.referrerPolicy property reflects the HTML referrerpolicy attribute of the <iframe> element defining which referrer is sent when fetching the resource.
HTMLIFrameElement.referrerPolicy
Value
- 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 (HTTP→HTTP, HTTPS→HTTPS), but isn't sent to a less secure destination (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 (HTTPS→HTTPS), but don't send it to a less secure destination (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 (HTTPS→HTTPS), and send no header to a less secure destination (HTTPS→HTTP).
- unsafe-url
-
Send a full URL when performing a same-origin or cross-origin request.
Note: This policy will leak origins and paths from TLS-protected resources to insecure origins. Carefully consider the impact of this setting.
Examples
var iframe = document.createElement("iframe"); iframe.src = "/"; iframe.referrerPolicy = "unsafe-url"; var body = document.getElementsByTagName("body")[0]; body.appendChild(iframe); // Fetch the image using the complete URL as the referrer
Specifications
| Specification |
|---|
| HTML Standard # dom-iframe-referrerpolicy |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
referrerPolicy |
53
|
79
|
50
|
No
|
38
|
14
|
53
|
53
|
50
|
41
|
14
|
6.0
|
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/HTMLIFrameElement/referrerPolicy
