OnionShare is a free P2P file sharing service created by technologist Micah Lee that operates without intermediator. It works by beginning a web server, making it open as a Tor onion service, and producing an unguessable URL to get to and download the records. OnionShare lets you safely and anonymously share records of any size. It doesnt need setting up a server on the web some place or utilizing an outsider filesharing service. When the mutually shared files are downloaded, or when the sender closes OnionShare, the Tor onion administration and web servers close down.”]
Source: https://gbhackers.com/share-files-anonymously-using-tor-and-onionshare/