Google Search Help – ” You can use a picture as your search to find related images from around the web. How reverse image search works When you search using an image, your search results may include:

• Similar images
• Sites that include the image
• Other sizes of the image you searched for

Search using an image works best when the image is likely to show up in other places on the web. So you’ll get more results for famous landmarks than you will for personal images like your latest family photo. Reverse image search using your computer. You can search using an image

• Chrome 5+
• Internet Explorer 9+
• Safari 5+
• Firefox 4+”