Pick&Zip is a free online tool that will allow you downloading pictures from Facebook in a single zip or pdf file. You can download your albums, pictures where you have been tagged and even your own friends’ pictures easily using this tool. You need to login with your Facebook account and then allow Pick&Zip to access your account. This service could be useful especially if you want to download large number of photos.
You can view all your photos as well as photos in which you are tagged. Similarly you can also download photos of your friends.
When you download it shows the option to save as a Zip file or a PDF file. Pick&Zip is a very useful as the service is online and does not require any installation.