An electronic device is provided. The electronic device includes a display, an input sensing circuit capable of acquiring a handwriting input inputted through the display, and at least one processor electrically connected to the display and the input sensing circuit, wherein the at least one processor uses the input sensing circuit to recognize written characters generated by means of the handwriting input inputted through the display, determines the slope of the recognized written characters, horizontally aligns the recognized written characters on the basis of the determined slope, and controls the display so that the recognized written characters and the horizontally aligned written characters are overlapped and displayed.