Chess Game Analysis is a free, open-source web application that lets you pull your games directly from Lichess or Chess.com by username and analyze them with Stockfish running in the browser. No account or API key is required — just enter your username, select a game, and the built-in engine analyzes it locally on your machine.

The interface provides move-by-move evaluation, an interactive game tree, and the ability to explore alternative lines. Because the analysis runs client-side in the browser using WebAssembly, there are no server costs and no data is sent externally. The tool is lightweight and focused purely on the analysis workflow.

The project is open source and completely free. It is a good option for players who want quick Stockfish analysis of specific games without navigating the full analysis interfaces of Lichess or Chess.com.