Most modern image viewers, even basic ones, will enable you to
convert the format of your images to some degree. This is especially useful if you are using Images gathered from a
number of different sources, whether it be your own photographs, or pictures
received from friends and family via email. Multiple image formats can
cause issues when trying to view images within a library, so you may find it more
convenient to convert the images in your library into a single, unified format. This
may make your images easier to manage, send to friends and upload to a
website. 11 Sep 2010