A search device and a search program for searching an identifier of a site server, which provides information corresponding to a search format including an inputted keyword. Specifically, the search device includes: a search database storage which stores a search database; a conversion program storage which stores a conversion program and the identifier of the site server by associating them with each other; a search unit which reads the search database storage and searches the identifier of the site server corresponding to the inputted search format; and a site search link generation unit which reads the conversion program storage, selects a conversion program while the conversion program is associated with the identifier of the site server, which is searched by the search unit, and uses the selected conversion program to convert the inputted search format into the identifier of the site search server attached to the site server.