An image processing device includes an acquiring unit, a rendering unit, and a mode determination unit. The acquiring unit acquires an input data including a character in a first size. The rendering unit renders an output image based on the input data. The mode determination unit determines whether or not a prescribed mode in which a consumption of printing material is reduced while printing the output image is designated. If the mode determination unit determines that the prescribed mode is designated, the rendering unit renders the output image of the character in a second size smaller than the first size.