The Media Session API's MediaImage dictionary describes the images associated with a media resource's MediaMetadata.

Its contents can be displayed by the user agent in appropriate contexts like in a player interface to show the current playing video or audio track.

src

The URL from which the user agent fetches the image's data.

sizes

Specifies the resource in multiple sizes so the user agent doesn't have to scale a single image.

type

The MIME type hint for the user agent that allows it to ignore images of types that it doesn't support. However, the user agent may still use MIME type sniffing after downloading the image to determine its type.

• MediaMetadata.artwork