Plaid13

Ok i spend way too much time in front of my computer so i tend to change my desktop wallpaper fairly often but my problem is a lot of the photos i use for wallpapers are not the right aspect ratio and they are too large to fit perfect. Anyone know of a way i can shrink down photos real easy to use as a wallpaper without cropping off the edges? Im sure i could use some sort of photo editor if i really had to but it would be nice to not have to deal with that. Cant believe windows has a option to strech a picture to fit but not one to shrink it to fit. I guess what im looking for is something to fill in that shrink to fit option windows seems to lack. Would have to keep the aspect ratio as well as shrink it btw.