You can't do anything on a computer without software. Do you mea
"without anything except Excel"
No,Excel does not have any native graphic export capability. But thi
is still very simple to do
I use a graphic program called IrfanView ('IrfanView - Officia
Homepage - one of the most popular viewers worldwide
(
http://www.Irfanview.com)) for fast, powerful picture manipulation
Install that
Now, in Excel, highlight the range of cells you want to turn into
JPG, press Ctrl-C to copy it, switch to IrfanView and press Ctrl-V t
paste in the image. Now save it
You get perfect JPGs every time. And IrfanView is free