Originally Posted by Ripplinger
7zip will handle both zip and rar files.
I recently ran into a file with the .mzp extension, and it seems that only a pay program, WinArchiver, can extract .mzp... talk about annoying. I installed a trial version, unzipped the .mzp file with it, and deleted the trial.
I've tried on my computer to extract with 7za (in comand line) a rar file, and it didn't.
To optimeze the size of the pictures i've compressed with Photoshopt using png-8, menu file --- save for web and devices -- select png-8, on the reader It isn't seem the changes.