Printing system, print output device, and program for generating display data of display screen

A printing system comprising:

• a print output device arranged inside a predetermined LAN, the print output device being configured to print a print job, and the print output device including print setting contents;
• a first server arranged outside the predetermined LAN;
• a second server configured to store specification information to specify a source of transmission of the print request;
• and
• an information terminal configured to transmit, to the first server, a print request indicating that a print output related to a designated file is to be performed in the print output device, wherein
• the first server transfers the print request to the print output device when receiving the print request from the information terminal,
• the print output device generates display data of a print preview screen based on print settings included in the print request received from the first server and based on the print setting contents of the print output device, and the print output device transmits the display data to the information terminal so that the information terminal receives the display data,
• the information terminal receives, through the second server, device specification information to specify the print output device, the print output device having transmitted device specification information to specify the print output device to the information terminal through the second server,
• the information terminal determines whether the print output device and the information terminal are in the same LAN based on the device specification information received from the print output device through the second server,
• the determination by the information terminal including:
• notifying, when a first determination result indicating that the print output device and the information terminal are not in the same LAN is acquired, the first determination result to the print output device, and
• notifying, when a second determination result indicating that the print output device and the information terminal are in the same LAN is acquired, the second determination result to the print output device, and
• the information terminal receiving the display data of the print preview screen further including:
• receiving the display data from the print output device through the second server when the first determination result is acquired, and
• receiving the display data from the print output device not through the second server when the second determination result is acquired.