An information processing device that acquires data constituting a Web page that is to be provided to a terminal device via a network and is designed for displaying predetermined content information. The information processing device then acquires a script that is programmed to allow reference to correspondence information associating candidate content information that is set beforehand as a candidate for content information to be displayed on the Web page, with variation information specifying variations of at least the display form of an object to be displayed on the Web page. The information processing device incorporates the script into the page data in an executable manner. In response to a request from the terminal device, the information processing device transmits the page data having the script incorporated thereinto, to the terminal device.