1. A printing apparatus that prints an image comprising: a setting section that performs setting based on designated setting content, the setting content being designated to contribute to a reduction in environmental load; a judging section that judges whether or not printing according to the setting content that is set by the setting section corresponds to environment-friendly printing which satisfies a predetermined environmental performance; an attaching section that attaches an attachment image to the image indicating that printing was performed using environment-friendly printing, when the printing according to the setting content that is set corresponds to environment-friendly printing; and a printing section that prints the image to which the attachment image is attached, according to the setting content that is set by the setting section.