To explain a little more:
StopNCII.org is a free tool designed to support victims of Non-Consensual Intimate Image (NCII) abuse.
The tool generates a hash from intimate images/videos. StopNCII.org shares the hash w/ participating companies so they can help detect & remove the images from being shared.
StopNCII.org is operated by the Revenge Porn Helpline which is part of SWGfL, a charity with an international reputation that believes that everyone should benefit from technology, free from harm.