Can .IMG files be compressed?

[drfsupercenter]

I ask this because, a friend of mine downloaded an .IMG file off the Internet (it's not like a DVD or anything, don't worry!).

However, every ISO reading program he tried said it wasn't a valid file. He thinks it may be slightly compressed. Is this possible? And if it is, is it possible to remove it?

[UncasMS]

i guess he got what he paid for: crap

if he cant open it with daemon tools, isobuster or alcohol120% he better delete it

[drfsupercenter]

So it's not possible for some sort of compression to be applied to IMG files?

[drfsupercenter]

I think it's a floppy disc image.

[UncasMS]

i wouldnt know actually