This present invention provides an image processing system and image processing method which can reliably transmit image information to a destination without attaching a large file which applies load to an e-mail system or reception terminal and make the receiving side easily acquire necessary image data on the basis of determination on the receiving side. In an image input/output device (10), image information is input from an image input device (201) and stored in a HDD (208) in a control unit (200). A low-resolution image or vector data is generated from the image information in accordance with the properties of objects contained in the image information. The generated information and information about the storage location of the image information are transmitted to a designated transmission destination.