It includes a built-in web server so that users can control Transmission remotely via the web. It allows torrent-file creation and peer exchange compatible with Vuze and μTorrent. It supports the Magnet URI scheme and encrypted connections. Transmission allows the assigning of priorities to torrents and to files within torrents, thus potentially influencing which files download first. Transmission also seeds, that is, it will automatically share downloaded content. Within the file selection menus, users can customise their downloads at the level of individual files.

By adding torrent files via the user interface, users can create a queue of files to be downloaded and uploaded. Transmission allows users to quickly download files from multiple peers on the Internet and to upload their own files.