An image processing device includes an inputting unit, an extracting unit, a reading unit and processing unit. The inputting unit converts, into a format which can be processed within the image processing device, and inputs, digitized document data for region designation that includes region information expressing a region which has been designated in advance in order to carry out a predetermined processing. The extracting unit extracts the region information from the document data for region designation and the reading unit reads a document image for carrying out the predetermined processing. The processing unit extracts, from the document image read by the reading unit, a region corresponding to the region information extracted by the extracting unit, and carries out the predetermined processing.