An image processing system in which a client apparatus transmits RAW image data to a server apparatus, receives a result developed by the server apparatus, and displays onto a display area. The client apparatus reduces the RAW image data to a size suitable to display, transmits to the server apparatus, and requests a development processing. The client apparatus also starts a transmission processing of original RAW image data to the server apparatus. While making adjustment of the development processing to reduced RAW image data, the client apparatus and the server apparatus execute a transmission and reception processing of the original RAW image data in parallel therewith. After the development processing of the reduced RAW image data, if there is a request from the client apparatus, the server apparatus also executes the development processing of the original RAW image data.

There is provided a non-transitory computer-readable storage medium storing a printing control program, the printing control program causing a computer to execute display processing, acquisition processing, and instruction processing. In the display processing, a setting image is displayed in response to a request from a general-purpose printer driver. In the acquisition processing, a FAX transmission destination to be a destination of FAX is acquired via the setting image. In the instruction processing, print control data including the FAX transmission destination is passed to the general-purpose printer driver and the general-purpose printer driver is caused to execute a print instruction conforming to the print control data and serving as a FAX transmission instruction to a printer having a FAX transmission function.