Privacy Policy
Last updated: March 2025
Introduction
Welcome to SudokuSolver.net. We respect your privacy and are committed to protecting any information that may be associated with your use of our website. This Privacy Policy explains what data we collect, how we use it, and your rights regarding that data.
Information We Collect
No personal data is collected. SudokuSolver.net is a client-side application. All puzzle solving, image processing, and analysis happens entirely in your web browser. No puzzle data, images, or solutions are sent to any server.
We may collect anonymous, aggregated usage data through third-party analytics services (such as Google Analytics) to understand how our website is used. This data may include:
- Pages visited and time spent on each page
- Browser type and operating system
- Referring website
- General geographic location (country/city level)
- Screen resolution and device type
This data is collected in aggregate form and cannot be used to personally identify you.
Image Processing
When you upload a Sudoku puzzle image using our OCR feature, the image is processed entirely within your browser using JavaScript (Tesseract.js). The image is never uploaded to our servers or any third-party service. The image data remains on your device at all times and is discarded when you leave the page.
Cookies
SudokuSolver.net itself does not set any cookies. However, third-party services integrated into our website may use cookies:
- Analytics cookies — used by analytics services to distinguish between visitors and track usage patterns
- Advertising cookies — if ads are displayed, ad networks may set cookies to serve relevant advertisements
You can control and delete cookies through your browser settings. Blocking cookies will not affect the core functionality of our Sudoku solver.
Third-Party Services
Our website may use the following third-party services:
- Pageviews.ai — for anonymous website usage statistics
- Google Fonts — for loading web fonts (Nunito, IBM Plex Mono)
- Tailwind CSS CDN — for styling the website
- Tesseract.js CDN — for client-side OCR image processing
Each of these services has its own privacy policy governing how they handle data. We encourage you to review their respective policies.
Data Storage
SudokuSolver.net does not store any user data on our servers. Your puzzle inputs, solutions, and uploaded images exist only in your browser's memory during your session and are not persisted anywhere. We do not have user accounts, login systems, or databases containing user information.
Children's Privacy
SudokuSolver.net is a general-audience puzzle tool suitable for all ages. We do not knowingly collect any personal information from children or any other users. Since no personal data is collected, there is no age-related data concern.
Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated "Last updated" date. We encourage you to review this page periodically for any changes.
Contact
If you have any questions about this Privacy Policy or our practices, please contact us through our parent company Puzzle Rocket.