it depends on what software you are using to view the picture. I will suggest you download and install IRFANVIEW (
http://www.irfanview.com) it is freeware, and is EXCELLENT. if you associate your files with it (it does this for you when you install) you can use it to crop, save as different formats, and do other basic photo editing functions (very basic...not a photo editor) quickly.
ONE NOTE: When you are installing, it checks off all the extensions you want to associate with this program. DO NOT associate .ICO files or every icon on your PC will be re-associated and use the default irfanview icon. I found this out the hard way and was never able to recover from it. had to re-install the OS. This was many years ago and maybe the software is smarter than that by now but better to be safe than sorry.