A display system includes a hardware processor and a display that has a display screen and presents a display on the display screen on the basis of control exerted by the hardware processor. In a case of causing a thumbnail related to consecutive images sequentially acquired using X-rays at a plurality of different times to be displayed on the display screen, the hardware processor selects, as the thumbnail, an image in accordance with a setting previously determined for the consecutive images. An image other than a leading image of the consecutive images is included in the thumbnail.