Torrent files or files with .torrent extensions are tiny computer files that contain information about the file you want to download, where to download it from and any metadata relevant to the file you want. But, it does not contain the actual content you are looking for. 

When you leverage a “.torrent” file in µTorrent Lite, the webpage will parse the metadata in the torrent file to find the actual content you want and to find where to fetch the file from.