Tools that let users search for people using pictures include TinEye and Google’s reverse image search function. Image Raider features a similar search function that is highly customizable.
Google’s reverse image search function is one of the most popular search tools and also the easiest to use. This feature allows users to upload an image, drag an image into the search box or search using an image URL. Users of Chrome and Firefox can also right-click a Google image and perform a reverse image search automatically.
TinEye is one of the oldest image-searching tools with over 11 billion images indexed. The site allows users to upload an image or enter an image URL to conduct a search. TinEye offers powerful image-matching algorithms that can be used as part of a browser extension or smartphone app. The site’s alert function notifies users when new matches for an image appear online.
Image Raider is a popular image search site that offers some unique features, including the ability to search for multiple images at once, to search for all of the images contained on a webpage and to upload images directly from sites such as Flickr. The site makes use of Google’s image search results, but its level of customization makes it unique.