A non-transitory storage medium stores instructions executable by a mobile terminal. The instructions cause the mobile terminal to: change a first image to a first size and change a second image to a maximum size in which the second image is displayable on a display area which remains after the first image of the first size is arranged, when priority mode information indicates a first-image priority mode; and change the first image to a second size less than the first size and change the second image to a maximum size in which the second image is displayable on a display area which remains after the first image of the second size is arranged, when the priority mode information indicates a second-image priority mode.