WHAT IS GOOGLE IMAGES?

Google Image Search is Google's tool for searching its index of images from all over the Web. To use it, visit http://images.google.com, type the thing you want to see an image of, and click Search Images.

Google's robots analyze dozens of factors on and about webpages (like captions, descriptions, and other contextual information) to understand and index the images on the Web. Google also applies sophisticated algorithms to the Image Search index to remove duplicates and to ensure that the highest-quality results show up first.