Privacy Policy

Last updated: February 25, 2026

Introduction

Welcome to Nonogram.online ("we," "our," or "us"). This Privacy Policy explains how we collect, use, and protect your information when you use our website at nonogram.online (the "Service"). Our Service is a free browser-based nonogram puzzle game. No account registration is required to use the Service.

Information We Collect

Automatically Collected Information

When you visit our website, we may automatically collect certain information through the following services:

Google Analytics: We use Google Analytics to understand how visitors interact with our website. This service collects information such as your IP address (anonymized), browser type, operating system, referring URLs, pages visited, and time spent on pages. Google Analytics uses cookies to collect this data. For more information, visit Google's Privacy Policy.
Amplitude Analytics: We use Amplitude to analyze user behavior and improve our game experience. Amplitude may collect information about your interactions with the Service, device information, and session data.

Cookies and Local Storage

CookieYes: We use CookieYes to manage cookie consent. This service helps us comply with cookie regulations by allowing you to control which cookies are used on our website.
IndexedDB / Local Storage: We use your browser's IndexedDB and local storage to save your game progress, preferences, and puzzle completion data. This data is stored entirely on your device and is not transmitted to our servers.

Backend Services

We use Supabase as our backend and database provider. Supabase may process data related to puzzle content and game functionality. We do not store personal user accounts or personally identifiable information in our database, as no registration is required.

How We Use Your Information

We use the information we collect to:

Provide and maintain the Service
Analyze usage patterns to improve the game experience
Monitor and analyze trends and traffic
Ensure the technical functionality and security of the Service

Data Sharing

We do not sell your personal information. We may share anonymized, aggregated data with our analytics providers (Google Analytics, Amplitude) as described above. These third-party services have their own privacy policies governing the use of your information.

Data Retention

Analytics data is retained according to the default retention policies of Google Analytics and Amplitude. Local storage and IndexedDB data persists on your device until you clear your browser data.

Your Rights

Depending on your jurisdiction, you may have the right to:

Access the personal data we hold about you
Request deletion of your data
Opt out of analytics tracking via your cookie preferences (managed through CookieYes)
Clear locally stored data by clearing your browser storage

Children's Privacy

Our Service is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.

Contact Us

If you have any questions about this Privacy Policy, please contact us at contact@nonogram.online.