Everyone knows how to use Google Image Search that lets you quickly find images on the Internet. But not everyone knows about search by image, that can help you in a wide variety of cases. Sometimes you want to search for the sources of images, or maybe you have an image on your computer or found one online, and you want a high-resolution version or want to check if someone has posted it online. Or perhaps you want to check the authenticity of the latest WhatsApp forward you received. Or you have a picture of a table, and you’d like to buy the same one; or you’ve seen a picture of a cartoon character you are not able to recognise. These are all scenarios where Google’s Search by Image tool can be handy.