Image crop, mask, or alpha?

When I import a JPG image it comes in as a rectangle. The image I have is of a circular label, and I want it applied to a circular disc. I’d tried using the alpha channel on the JPG but that still renders as an opaque white rectangle. I can’t intersect a planar image with a circular mask. How do I get the circular label in a JPG applied to the circular disk without the rectangular artifacts?

Convert the jpeg to PNG and erase the perimeter that makes it a rectangle. PNG lets you have a transparent background. You can import PNG’s in Shapr3D.

Using a PNG instead of a JPG worked great, thanks!