An information distribution system configured to deliver various types of content provided by an information distributor to information receivers through a network and transmitting the content to be distributed converted to colors, color values, or color digital values. By converting the content to colors, color values, or color digital values, it is possible to reduce the amount of information transmitted. Due to this, it becomes possible to shorten the time required for distribution of content and to improve practicality. Further, it becomes possible to reduce the distribution costs.