I do a lot of shoes catalogues, where white background is used on images.
It would be nice to have a tool that detects pure with and adjust the frame to that area.

I do have clipping paths on the image, but it crops also the natural shadow.

Something like the PS magic wand, where you can select the offset of the frame.

ID will detect all the exterior pure white and adjust a frame around it with an offset of Xmm.