Switching to Jellyfin? Jellyport puts your Plex playlists next to your Jellyfin ones. Drag over what you want, check it, and copy. Free and open source.

Drag single movies, a selection, or whole playlists from Plex into any Jellyfin playlist.
New items show in green and missing ones in red. Nothing changes until you click Copy.
Movies are matched by file path, IMDb, TMDb or TVDb ID, or title and year.
Path mappings handle Jellyfin in a container on Synology, Unraid or QNAP.
Movies that are already in a playlist are skipped, so you never get duplicates.
It talks only to your own servers. No accounts, no cloud, no tracking.
Yes. It's MIT-licensed open source. If it saves you time, a star on GitHub is appreciated.
The installer isn't code-signed yet. Click More info → Run anyway, or build it yourself from the source on GitHub.
Make sure Jellyfin has scanned and identified them. If Plex and Jellyfin see your NAS folders under different paths, add a path mapping in Settings, e.g. /volume1/video/Movies => /media/movies.
No. Jellyport only reads from Plex. It writes only to Jellyfin, and only when you click Copy.
Video playlists, including TV episodes inside them, are supported. Music is on the roadmap. On macOS and Linux, run python jellyport.py. It needs only Python 3.