A print data generating apparatus to generate print data based on inputted image data representing an image is provided. The print data generating apparatus includes a white data generating unit to generate white data, which indicates color scale values of white being used in the image, a white outline pixel judging unit, which examines a currently marked pixel among pixels included a white area to judge as to whether the marked pixel is a white outline pixel composing an outline of the white area with reference to the white data, and an outline-removed white data generating unit to generate outline-removed white data, which includes information to indicate that the outline of the white area is removed. The outline-removed white data generating unit removes the outline of the white area by clearing the color scale values of white of the white outline pixel to zero.