An image viewer. ToyViewer can display and save images in various formats. You can also apply various operations to images. Because ToyViewer provides Image Conversion Filter Service, if ToyViewer is installed on your machine, other Cocoa applications can display PCX, PPM, Sun Raster, etc. You can set ToyViewer to display any image format if there is a filter program to ppm. Besides, ToyViewer can make a custom icon for specified file.