Is Letterboxd Extras safe?

Low risk

Letterboxd Extras uses a built-in Kinopoisk API key for optional Kinopoisk rating requests.

When the Kinopoisk feature is enabled and the host permission is granted, Letterboxd Extras requests film data from kinopoiskapiunofficial.tech. If no user-supplied Kinopoisk API key is configured, the background worker adds a built-in X-API-KEY header to those requests.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

duncanlangdevv3.20.4Chrome Web Store
15Risk
Who publishes it

duncanlangdev - no other listings under this identity, 2 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Shared hosts - 2 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

apollo.senscritique.com
Also called by 3 other listings, including SensCritique
api.simkl.com
Also called by 4 other listings, including Simkl TV Tracker

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Where it sends data

Destinations our analysis observed Letterboxd Extras contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • kinopoiskapiunofficial.tech

    Letterboxd Extras sends data to kinopoiskapiunofficial.tech. No other extension we have analysed sends data here.

Updated 30 September 2026edhldpamlnkpekapihiolppcdppgeice