An image processing device includes an image processing part configured to process supplied image data, an image compression part configured to compress image data, a data supply part configured to sequentially supply the image data to the image processing part in a horizontal direction, the image data having a vertical data size defined by adding the size of peripheral data to an integer multiple of the vertical data size of a basic data size, a setting part configured to set the processing operations of the image processing part and image compression part, a storage part configured to store the image data, which is obtained by causing the image processing part to process the image data, and a sending part configured to read out the image data, for each basic data size and sequentially send the data to the image compression part.