Privacy Policy
Last Updated: February 2026 • Effective Immediately
1. Introduction
Welcome to Chess Analysis Free (accessible at chessanalysisfree.com). We respect your privacy and are committed to protecting any information associated with your use of our platform. This Privacy Policy explains our practices regarding data collection, client-side engine processing, and user rights.
2. Client-Side Analysis & Zero Game Data Tracking
Our core mission is to provide 100% free, private chess game reviews. Unlike traditional cloud-based platforms that store your imported PGN files and game archives on private servers, Chess Analysis Free runs the Stockfish engine directly inside your web browser via WebAssembly and Web Workers.
Your PGN files, FEN positions, and Chess.com/Lichess username searches are evaluated locally on your device. We do not store, log, or sell your played chess games to third parties.
3. Information We Collect
We collect minimal, non-personally identifiable technical information required to operate and secure our website:
- Local Preference Storage: We use browser
localStoragesolely to save your UI preferences, such as your selected theme (Light Mode / Dark Mode) and board orientation. - Public API Queries: When you search a username on Chess.com or Lichess, public API requests are sent directly to their official servers to fetch your recent game archives.
- Standard Web Server Logs: Standard anonymous server logs (IP address, browser type, referring URL) may be processed strictly for network security and DDoS mitigation.
4. Third-Party Services & Links
Our platform interacts with external public APIs provided by Chess.com and Lichess.org to fetch public game data. We encourage users to review the privacy policies of these external platforms when using their services.
5. Cookies & Tracking Technologies
Chess Analysis Free does not use intrusive tracking cookies or personal profiling mechanisms. Any standard browser storage is strictly essential for site functionality and theme persistence.
6. Updates to This Policy
We may update this Privacy Policy periodically to reflect technological improvements or legal requirements. Any changes will be posted directly on this page with an updated revision date.
7. Contact Us
If you have any questions or feedback regarding this Privacy Policy, please visit our Contact Us page.