Explanation on the iframe attributes used by Vulp.

Required attributes

The Vulp iframe embed uses a small number of attributes that are required to obtain the full functionality.

Allow attribute


The xr-spatial-tracking value is inside the allow attribute in order to enable fast rendering of 3D models.


The fullscreen value is inside the allow attribute such that it is possible to add fullscreen functionality in the future. It is not strictly required at the moment.

Referrer-policy attribute


The no-referrer-when-downgrade referrer policy is required to obtain the URL of the parent page such that Vulp can show a QR-code to that page.