To display contents contained in content data so that information already confirmed by a user and information not yet confirmed can be understood at a glance.

A content display device 100 comprises a first display control part 121 which magnifies a part of a display object page of contents on a display part 105, and a second display control part 122 which displays approximately the whole display object page on the display part 105. Since the second display control part 122 displays a displayed region which has already been displayed by the first display control part 121 among the display object pages in a manner recognizable from the other regions, the user can understand the displayed region which has already been displayed and confirmed at a glance.