If you are very much conscious about the images you have on your website or if you are photographer or the artist and being worried about stealing or unauthorized use of your images then the TinEye will definitely help you. This site is like a search engine which inserts a signature database into the images you upload to the site and later which is used to find the images if on any other site it is being used.

This site can also be used to find the similar higher resolution of any image if you put an url of the image of your favorite wallpapers or vanity search for your own graphic design. Though it don’t support the phrase or keyword you have to give it an exact url of any image for which you want a search.

So again if you are serious on protecting your images then you should try this service which is absolutely free to use as there are a lot of photographers and web publishers already using it instead of making their photographs watermarked.