HTMLImageElement.referrerPolicy

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

Syntax

refStr = imgElt.referrerPolicy;
imgElt.referrerPolicy = refStr;

Values

• "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.

Examples

var img = new Image();
img.src = 'img/logo.png'; 
img.referrerPolicy = 'origin';

var div = document.getElementById('divAround');
div.appendChild(img); // Fetch the image using the origin as the referrer

Specifications

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

Browser compatibility

[1] From Firefox 45 to 50, this was behind the network.http.enablePerElementReferrer preference. From Firefox 42 to 44 include this property was called referrer.

See also

• HTMLAnchorElement.referrerPolicy, HTMLAreaElement.referrerPolicy, and HTMLIFrameElement.referrerPolicy.