Firefox add-on: TinEye Reverse Image Search

At first I thought something like this was impossible. Being able to reverse search an image. To be able to use the image as your keyword in searching. Well just check out the link to find out what it is. I have installed the add-on and it works pretty well.

The Ultimate Badass Add-on

TinEye is a website, they're not just a Firefox add-on.

what does it do?

It locates possible sources of images, if indeed one can be found.