This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.

The referrerPolicy read-only property of the Request interface contains the referrer policy governing the referrer for the  request.

Note: The referrer is set in the HTTP Referer header, see the Referrer policy spec for more details about referrer policy.


var <var>myReferrerPolicy</var> = <var>request</var>.referrerPolicy;


A DOMString representing the request's referrerPolicy, as defined in ReffererPolicy. Possible values are:

  • An empty string if there is no referrer policy set.
  • no-referrer
  • no-referrer-when-downgrade
  • origin-only
  • origin-when-cross-origin
  • unsafe-url


In the following snippet, we create a new request using the Request.Request() constructor (for an image file in the same directory as the script), then save the request referrer policy in a variable:

var myRequest = new Request('flowers.jpg');
var myReferrer = myRequest.referrerPolicy; // returns "" by default


Specification Status Comment
The definition of 'referrerPolicy' in that specification.
Living Standard Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support ? 47 (47) No support


No support
Feature Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Phone Opera Mobile Safari Mobile Chrome for Android
Basic support ? ? No support No support No support No support ?

See also


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

API Experimental Fetch Property Reference referrerPolicy request