if your pic's are on your PC
open Paint
click on resize
change to % and make it 30%
save as XXXa - I always just add an a to the end when I change them, then I know which one is the one I want
open Paint
click on resize
change to % and make it 30%
save as XXXa - I always just add an a to the end when I change them, then I know which one is the one I want