A control device controls an analyzing device or a processing device by using an application performing control for causing a GUI image including a plurality of GUI components to be displayed on a display screen of a display unit. The control device includes: a GUI component designation information receiving unit that receives GUI component designation information used for designating a GUI component among the GUI components; a position information acquiring unit that identifies the GUI component designated on the basis of the GUI component designation information and acquires position information indicating a position of the identified GUI component on the display screen from an operation system; and an emphasizing image display control unit that performs control for causing an image for emphasizing the identified GUI component to be displayed on the display screen on the basis of the position information.