Bret, this really depends on many things JPG does good compression for color images but it is a lossy alogrithm (quality degrades) GIF is limited to a pallete of 256 colors but does better work (than JPG) for b/w images (for example) it also can store more than one image in a file (etc.) BMB wastes a lot of space but preserve the exact image etc .etc. there is no magic "best for all" solution you should determine whta format to use - according to the data you want to store Arnon >We are currently investigating distributing our data on CD's for our >customers and need to >convert all our images/documents to a common format. > >If you have experienced this before, what common format type would you >choose to >base all of our data on. e.g. TIF, JPG, PDF, .... Can you give a >reason. > >Thanks in advance > >