How to compress an ISO file

Does anybody know of any software which will allow me to compress an ISO. file?

Solution 1:

If you are just aiming to compress it for moving, then 7-Zip or another decent file compressor is what you're aiming for, just don't expect them to do too much as often the contents of ISOs are already compressed (plus it can take a REALLY long time to try and compress huge ISOs for little to no gain)

For playing around with it and keeping it as an ISO, I'd suggest checking out MagicISO as it has an "ISO Compression/Decompression" system in the newer versions (see here) that may help you out.

Solution 2:

Any compression software will compress an iso file.

zip

bzip2

7zip

rar

etc.

However, I suspect you want something more... like compress the iso file bust have it still be an iso compatible image?

For that, I don't that that is doable.