Privacy

What happens in your browser

Every tool on this site runs entirely on your device. When you enter a username, your browser talks directly to Lichess or Chess.com and receives the public games. Nothing is sent to a server belonging to this site, and nothing about those games is stored anywhere outside your own browser.

The chess engine is Stockfish, compiled to WebAssembly. It runs in a background thread of your browser tab. No position you analyse leaves your device.

What is stored on your device

The site uses your browser's local storage to remember things so you do not have to type them again: the platform and username you entered. This never leaves your device, and clearing your browser data removes it.

There are no cookies and no advertising identifiers.

Hosting

The site is hosted on Cloudflare. Like every web server, Cloudflare processes the technical data needed to deliver a page: your IP address, the requested address, the time, and the browser and operating system you use. This is necessary to serve the site and to keep it available and secure. Cloudflare is contractually bound as a processor.

Traffic measurement

To see which pages get used, the site includes Plausible Analytics, hosted in the European Union. It works without cookies and without any access to storage on your device.

Plausible does not store your IP address. It receives it once in order to derive a country and a daily changing, salted hash that distinguishes a returning visit within the same day. Neither the address nor the hash is kept, and the hash cannot be traced back to you or linked across days. No profile is built, and nothing is shared with third parties.

What is recorded is the page visited, the site you came from (its domain only), rough device class and country, and how long a page was in view and how far it was scrolled. The page address is cut down to the page itself before it is sent: never a username, neither yours nor that of an account you looked up, never a game or a link to one, never your moves or any other content. Only campaign tags such as utm_source are kept.

The measurement script is served from this site, not from a third party, so no outside code runs on this page. What it sends goes to Plausible directly, which means Plausible sees the connection and with it your IP address, for the one purpose described above and without storing it.

Other sites you reach from here

Some features load data from other providers, and those providers see your IP address when they do:

• Lichess and Chess.com — your games, or the games of the account you look up.

The opening name database is served from this site, so no request for it goes to a third party.

Links that leave this site are marked as such. No referrer is sent with them.

Your rights

You can ask what data relating to you is processed, and ask for it to be corrected, erased or restricted. You can object to processing, and you can lodge a complaint with a data protection supervisory authority.

In practice there is very little to ask for: this site keeps no account, no profile and no record of who you are. A request about the server logs is best directed at the host.

Contact

Questions about this page, or about data protection generally, go to ChessGalaxy@proton.me. Anything else about the site belongs on the feedback page.

Last updated 8 October 2026.