A Magnet URI (Uniform Resource Identifier) is not a file format in the traditional sense. It's a hyperlink that contains metadata used to locate and download files, typically through peer-to-peer networks like BitTorrent. Instead of pointing to a specific file location on a server, a magnet link contains a hash (usually an info-hash) that uniquely identifies the content. This hash allows BitTorrent clients to find peers who are sharing the desired file. The magnet link may also include other information, such as the file name, tracker addresses (servers that help coordinate the download), and other parameters. The primary advantage of magnet links is that they don't rely on a central server hosting the torrent file itself, making them more resilient to censorship and server downtime. They are a compact and efficient way to share files across decentralized networks. Clicking a magnet link typically opens a BitTorrent client on your computer, which then uses the information in the link to initiate the download process. Magnet links are widely used for sharing various types of content, including software, movies, music, and documents.