A printing apparatus configured to print an image by discharging inks of different colors from a printing head onto a printing medium includes an edge extractor that extracts an edge pixel constituting a contour of the image from image data and a dot data generator that generates dot data indicating the recording state of dots corresponding to the image data. The dot data generator performs edge processing on a pixel in the image data to reduce the volume of inks discharged when the pixel is the edge pixel to a value that is the product of the volume of inks discharged when the pixel is a non-edge pixel and a coefficient, and the edge processing includes edge processing for maximum brightness for making a minimum value of the coefficient for when the inks discharged onto the edge pixel includes a maximum brightness ink having a highest brightness among the inks of different colors smaller than the minimum value of the coefficient for when the inks discharged onto the edge pixel do not include the maximum brightness ink.