This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

The HTMLIFrameElement.referrerPolicy property reflect the HTML referrer attribute of the <iframe> element defining which referrer is sent when fetching the resource.


<var>refStr</var> = <var>iframeElt</var>.referrerPolicy;
<var>iframeElt</var>.referrerPolicy = <var>refStr</var>;


  • "no-referrer" meaning that the Referer: HTTP header will not be sent.
  • "origin" meaning that the referrer will be the origin of the page, that is roughly the scheme, the host and the port.
  • "unsafe-url" meaning that the referrer will include the origin and the path (but not the fragment, password, or username). This case is unsafe as it can leak path information that has been concealed to third-party by using TLS.


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


Specification Status Comment
Referrer Policy
The definition of 'referrerpolicy attribute' in that specification.
Working Draft Added the referrerPolicy attribute.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support ? ? 42.0 (42.0) [1] ? ? ?
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support ? 42.0 (42.0) [1] ? ? ?

[1] Behind the network.http.enablePerElementReferrer preference, that default to false. From Firefox 42 to 44 include this property was called referrer.

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Experimental HTMLIFrameElement Property Reference Referrer Policy