Compare is a free and open-source application that lets you compare two images side-by-side, allowing you to see the differences between them and have a better understanding of what one image is. You can also use it to make sure that the picture you are about to upload to your Facebook or Instagram account is the best picture you can use.

In addition, you can use Compare to make sure that the picture you are about to send to a friend is the best picture you can use and to see what your friend thinks about the picture you want to send to your friend.

You can also use Compare to add two images to one image or to one of your photo albums, allowing you to edit and view your images in a new way.

Compare is a very easy-to-use application that lets you do all of the work for you, so you don't need to be a photo expert to use it.