Reverse image search is a feature offered by various tools and search engines that allows users to find images that are either similar to or identical to a specific image they provide. This method involves either uploading the image or entering its URL, and then using recognition algorithms to find matches with previously indexed visuals. Reverse image search has diverse applications: it can be used to trace the origin of an image, to identify an object or person in a photo, to verify the authenticity of an image, or to find similar products or visual elements. Some examples of tools offering this functionality include Google Images, TinyEye, and Smallseotools.com/fr/reverse-image-search/.