Essential authentication storage
Firebase Authentication may use cookies, local storage, IndexedDB, or similar browser storage to complete Google Sign-In or email-link sign-in and maintain a signed-in session. This storage is necessary for authentication and security.
Local workspace storage
ChessTier uses local storage for your selected theme and recently used public-game usernames. It uses IndexedDB for reports you choose to save locally, including PGN and analysis results. These items stay in your browser unless you delete them or clear browser site data.
Analytics cookies
ChessTier uses Google Analytics to understand aggregate site visits, page use, and browser performance so we can improve the service. Google Analytics may use cookies or similar identifiers and process technical usage data under Google's own policies.
We use Google Analytics for site measurement only. Google signals and ad-personalisation signals are disabled in our configuration, and ChessTier does not use the service for advertising, retargeting, or personalised advertising.
What we do not use today
ChessTier does not use advertising cookies, retargeting cookies, or third-party advertising pixels.
Managing storage
You can manage or delete cookies and browser storage through your browser settings. Removing site data may sign you out, remove preferences, and permanently delete locally saved ChessTier reports from that browser.