Free Online SUN to RB Converter

This is a bitmap image format that is used on Sun Microsystems workstations running the Sun Unix operating system. It is used for some types of research. This format does not support transparency settings. It supports full-color and grayscale images.

Was developed for the first mass-produced e-book reader – Rocket eBook. The format is written in Ruby. RB files are containers holding the entire content for a Rocket eBook device. It has DRM protection capability which is not used in the books published at present due to the format’s lack of popularity.