Convert Multiple Photo Image Files To Coloring Book (Grayscale) Image Files Software - Version 7.0 This software offers a solution to users who want to convert one or more images into black and white. The user chooses the files or an entire folder to be processed and uses the sliders to set image quality, black filter, gradient filter and gray filter before starting the conversion. Using this time saving software, even large numbers of files can be handled with one click.