To provide a print log management system which keeps searchability while efficiently managing information to be managed, and also provide a print log management device, a print log management method and a print log management program.

The print log management system 100 comprises a print request terminal 200, an image-forming device 300 which outputs print data generated in the print request terminal 200 and generates log data relating to the operation of the print data, and a print log management device 400 which manages the print logs of the print data. The print log management device 400 converts the format of the print data to a format selected based on conditions predefined by a format selection part 420. The print log management device manages print data after conversion in association with the log data.