Compression is not suppose to make the file lose any quality, but rather sacrifice the time in opening them for disk space, which sounds reasonable for old files.
From a couple tests, image files don't get compressed very much.
If you want to decompress them, it could certainly be done. Please then tell me where the files are located (a drive or folder name), and what formats are they in (jpg, jpeg, gif, etc).
Edited by PropagandaPanda, 26 September 2009 - 01:32 PM.