An image processing apparatus includes a first storage device, a second storage device, a rendering unit, and a data handling unit. The rendering unit is configured (a) to generate intermediate data from image data, store the intermediate data in at least one of the first storage device and the second storage device, and (b) to generate bitmap image data on the basis of the intermediate data. The data handling unit is configured to select one of the first storage device and the second storage device as a storing place of the intermediate data on the basis of free area sizes of the first storage device and the second storage device and data transfer rates of the first storage device and the second storage device.