HTML <iframe> referrerpolicy Attribute

The HTML <iframe> referrerpolicy attribute is used to specify the reference information that will be sent when fetching the result. 

Syntax

<iframe referrerpolicy="value">

Attribute Values:

1. no-referrer: It specifies that no reference information will be sent along with a request.
2. no-referrer-when-downgrade: It has a default value. It specifies that refer header will not be sent to origins without HTTPS.
3. origin: It specifies to only send the origin of the document as the referrer in all cases.
4. origin-when-cross-origin: It sends the origin, path, and query string when performing a same-origin request, but only send the origin of the document for other cases.
5. same-origin: It specifies that the referrer will be sent for same-site origins, but cross-origin requests will send no referrer information.
6. strict-origin: It only sends 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).
7. strict-origin-when-cross-origin:  It sends the origin, path, and querystring when performing a same-origin request, only send the origin when the protocol security level stays the same while performing a cross-origin request (HTTPS/HTTPS), and send no header to any less-secure destinations (HTTPS/HTTP).

Example: 

Output:

Supported Browsers:

• Google Chrome 51.0 and above
• Internet Explorer Not Supported
• Firefox 50.0 and above
• Safari 13.0 and above
• Opera 38.0 and above
• Edge 79 and above