1. An image processing device, comprising: a region extraction unit for separating and extracting a character region, a graphic region and a photograph region from image data; a region compression unit for performing a compression process for the image data in each region extracted by said region extraction unit; a region synthesis unit for synthesizing the image data of the regions compressed by said region compression unit; a display; a compression process mode setting unit, said compression process mode setting unit displays a plurality of compression process modes on the display, enabling a user to select one of the plurality of compression process modes; and a compression method selection unit for selecting from a plurality of compression methods, one of the plurality of compression methods for each region for the compression process to be performed for each region, wherein the selection unit displays one or more compression methods on the display for each region, enabling a user to select one of the plurality of compression methods in accordance with a type of the region from the plurality of compression methods, and wherein for each type of region, the selection unit displays only compression methods from compression methods in the plurality of compression methods that are designated for the type of region; said region compression unit using, when a speed preference mode is set at said compression process mode setting unit, one of a plurality of compression methods designated for the image data in each region which exhibits a highest processing speed to perform the compression process for the individual region, wherein, for each type of region, the designated compression method is selected from among a plurality of compression methods, wherein each of the plurality of compression methods is designated for the type of region, and said region compression unit performing the compression process for the image data of each region using the compression method selected for the region by said compression method selection unit.