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The iteminfo thumbnail resource returns the thumbnail associated with the item information card of the service.

This resource streams the thumbnail contents to the client.

New in 10.6.1

For feature and map services published using ArcGIS Pro (2.2 or later) layer / table resource on services support the thumbnail resource. Check the hasMetadata flag on a layer / table resource to determine if that layer / table supports the thumbnail resource.

Example usage

Example: Return ItemInfo thumbnail for a map service: