.XDW extension

A friend scanned some photos for me (I don't have a scanner) and sent them to me as an attachment so I can email them to a relative.

However the extension is .xdw which I can't open -  I asked her to scan them to JPG but maybe she can't. I want to be able to open them as JPegs and edit them first, but as I said none of my programs will recognise the extension. I thought when you scanned something you could save it to JPG?

Any feedback welcomed, thanks.