how could I present a photo in Scapple

In the pre-sale-pictures in the MAS are photos shown as a part of Scapple-map. If I drop photos into a Scapple-Map I always get links, but not photos. Whats the correct way to do this?

https://forum.literatureandlatte.com/t/getting-images-into-scapple/46111/1

Mark