To provide information management system, information generation unit, Web log management system, and Web log data generation unit, effectively realizing cooperation between information written on paper and electronic information.

An information management system 1 having a database 45 for storing information includes a reading means 110 for reading, as image, manuscript paper including position identification information for identifying a data storage position in the above database 45 and data image information; an image information extraction means 310 for extracting the above position identification information and the image information from the images read by the above reading means 110; and an information management means 410 for storing the above image information into a data storage position of the database 45, which is identified by the above position identification information.