An electronic device comprises: a memory; a shutter unit; a projection unit that outputs an image on a projection surface; and a processor that acquires a first image corresponding to content from a memory, keystone-corrects the first image to acquire a second image, identifies an image portion corresponding to the content and a remaining portion not corresponding to the content in the second image, and controls the shutter unit in such a manner that the remaining portion is not projected on the projection surface.