: Has a built-in feature ( View > VLsub ) to search and download subtitles for the currently playing file.
If you have many episodes and don't want to download files one by one, these tools can handle "all subtitles" at once: All subtitles for this TV Series
Bazarr : An automated companion to Sonarr/Radarr that manages and downloads missing subtitles for your entire library. : Has a built-in feature ( View >