At the moment it has no saving, loading, or editing lol, but the idea is to support kimg (KnightOS's format), grayscale png, and whatever else there is in the calculator community.
The KIMG specification supports monochrome, greyscale, and color images. There's discussion on how the image format should work here
, and I think it was finalized here
. I think that it would be best to implement KIMG as a userspace library, at this point.