Watermark Anything is an image watermarking technology developed by Facebook Research that allows for the embedding of one or more localized watermarks within images. The significance of this technology lies in its capability to protect and track image content while maintaining image quality. It is based on research in deep learning and image processing, offering advantages such as high robustness, invisibility, and flexibility. The product is positioned for research and development purposes and is currently available for free to the academic community and developers.