A screenshot or screen capture operation method for an electronic device includes: capturing a screen displayed on a display; determining whether additional information exists on the displayed screen; when the additional information exists, extracting the additional information, based on the displayed screen; determining whether a command for modifying the captured screen has been received; when the command for modifying the captured screen is determined as having been received, modifying the captured screen according to a user input; and storing the extracted additional information and/or the captured screen as a captured image. The resulting method enables a user to capture a screen intended or desired by the user.