Free from themoviedb.org → Settings → API → request a v3 key. Stored only in this browser. Powers poster art and metadata.
By default your shelf is saved in this browser only. To sync across devices through your own Cloudflare backend, paste your Worker URL and access token below — same values on each device.
Sync is on.
Use the same Worker URL and token on your other devices.
Even with sync on, an occasional export is smart insurance. CSV opens in any spreadsheet; JSON is the exact restore file.