An online image search and marketplace platform and browser plug-in system is described. The system is configured to execute image-based searches of the Internet to correlate hosted images with ownership and licensing metadata, facilitating the marketing of images to users and expediting the purchase of licensing for said images. The system employs an online platform in communication with an image metadata database, providing a conduit for users to execute an image search from an image search field populated by a target image URL or direct image upload. An auto-cropping feature combined with extensive steganography integration ensures accurate image identification, ownership mapping, and usage tracking. The browser plug-in facilitates the execution of an image search within the right-click menu of any image hosted to the Internet. Image tracking enables content owners to be alerted in real-time when unlicensed use of content is detected.