This tool helps when “all sizes option” restricted and you cant download  the original size that you wanted.Sometime  the owner  just keep the photo  on the private mode so you cannot access the original size of the photo. What can you do ?

you can use Get Flickr, A very cool aplication that can retrieve original size of any photo easily eventhough they are restricted. The page provides a text box where you have to copy and paste the photo ID of a particular Flickr photo. Arter you click geturl buton , the application will show the URL of the image’s biggest version and you can download it to your computer.