An image forming device for executing an authentication print job including: a communication interface unit for receiving print data; a job data holding unit for holding job data based on the print data for the authentication print job; a user authentication unit for outputting the result of the user authentication to a control unit; a job execution unit for executing a job based on the job data; a job list generating unit for generating a list of the authentication print jobs; a display unit for displaying the list; and the control unit for, in receiving the result of the user authentication, acquiring a number of the authentication print jobs of the user authenticated by the user authentication, wherein, when the number is greater than or equal to a predetermined number, the control unit causes the job list generating unit to generate the list of the authentication print jobs of the authenticated user, the display unit to display the list, and the job execution unit to execute the authentication print job of the authenticated user.