A printing system that transfers an image composed of pixels of a first resolution, includes a client and a printing apparatus. The client includes a determining unit that, for a pixel block that is of a size of a pixel of a second resolution that is lower than the first resolution, determines whether or not the pixel block is homogenous on the basis of a difference in color information for a target pixel of the first resolution included in the pixel block; an image-data-for-transfer creating unit that creates image data for transfer by changing pixels of the first resolution included in a pixel block that has been determined to be homogenous from the first resolution to the second resolution; and a transmitting unit that transmits the image data for transfer. The printing apparatus includes a receiving unit that receives the image data for transfer and a high-resolution-image-data creating unit that creates image data representing an image composed of pixels of the first resolution by changing pixels of the second resolution in the image data for transfer from the second resolution to the first resolution.