An electronic device according to an embodiment may comprise: a housing; a memory configured to store instructions; a display slidable into the housing or slidable out of the housing; and at least one processor, when the instructions are executed, configured to: identify, while an image is displayed in a display area of the display exposed outside the housing, an event in which the display area exposed outside the housing is extended; and change, in response to the identification, a representation of the image based on at least one of a direction in which the display area is extended or a speed at which the display area is extended, while the display area is extended.