Is Chess.com analyse at lichess safe?

Clean risk

Chess.com analyse at lichess sends a selected Chess.com game's PGN to lichess.org when the user starts analysis.

When clicked on a supported Chess.com game page, it reads the page URL and player name, requests Chess.com archive data from api.chess.com, and finds the matching PGN. It then opens lichess.org/paste and fills and submits that PGN so Lichess can analyze the game.

zerayev1.8.5Firefox Add-ons
0Risk
Who publishes it

zeraye - no other listings under this identity

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

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

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.8.5. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on www.chess.com

    https://www.chess.com/*

  • Read and change your data on lichess.org

    https://lichess.org/*

  • See the address and title of every tab you have open

    tabs

Where it sends data

Destinations our analysis observed Chess.com analyse at lichess 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.

  • lichess.org

    Chess.com analyse at lichess sends data to lichess.org. One other extension we have analysed sends data here.

  • api.chess.com

    Chess.com analyse at lichess sends data to api.chess.com. No other extension we have analysed sends data here.

Updated 30 September 2026amo-2715895