Preview Image
Nearly all objects can have a preview or avatar image that represents it within articy:draft. The preview image is a powerful tool to make objects recognizable and to literally get a picture of things more quickly. After importing some images to the assets folder, you can assign them to objects by drag & drop or by right-clicking on the preview image field in the object's property sheet.
Now you can zoom in or out, using the mouse-wheel or the 2 zoom slider, and drag the 3 rectangle to the image section you want to have as preview image.
The selection for the preview image may be partly 4 outside the borders of the source asset.
Edit Preview Image
When assigning a preview image it may happen that you are not completely happy with the square image section that is displayed. You can change the displayed section by right-clicking at the preview image and choosing 1 "Edit preview image":Now you can zoom in or out, using the mouse-wheel or the 2 zoom slider, and drag the 3 rectangle to the image section you want to have as preview image.
The selection for the preview image may be partly 4 outside the borders of the source asset.