A content generation apparatus capable of allowing a user to select an image file to be used according to a purpose. In the content generation apparatus, one or more controllers function to generate a content, generate metadata including original comparison information for grasping a change from a generation time point of a content file including the content, generate a hash value on a basis of the metadata including the original comparison information and of the content, generate a first content file which includes the content, the metadata including the original comparison information, and the hash value, and generate a second content file which includes the content and does not include the original comparison information.