Why does inspector of images (.png.. etc.) doesnt show textures size?

Seems to be really annoying for inspecting images from project window :<

Also its a very basic property, if not the only one (apart from colors used in it)

Yep, it shows the scaled size you’ve selected in Max Size. I agree that this is not convenient in discovering the original size of the texture, and you have to open Finder or Explorer to get it.