Loupe is an online tool which is launched by very popular collage creating team known as Shape Collage, with this tool you can create amazing collages from your Facebook Photos. This tool simply connects with your Facebook Acc. as you need to grant it access than it crawls your all albums and gives you option to choose images from.
Using Loupe is really simply as it has a very nice interface so it will not be a tough job for you for creating a nice collage for all your friends. The best thing I liked about Loupe is that it has nice options to tweak, you can change shapes and re-assemble your images as you want.
So overall its really fun to use this service, so now just enjoy creating some cool awesome collage layouts and do share this post with all your friends.