1. Zero Personal Data Collection

Online Ruler (onlinerulercm.com) is built with privacy by design. We do not require accounts, sign-ups, email addresses, or phone numbers to use our measuring tools. We do not sell, rent, or trade user data to any third party.

2. Client-Side Local Storage

Our web application saves your measurement preferences (such as calibrated PPI, unit choices: cm/mm/inches, active ruler edges, and dark mode theme) locally in your own browser using localStorage.

This data never leaves your device and is not transmitted to our servers. You can clear this data at any time through your browser settings or by clearing site data.

3. Server Logs & Analytics

Like virtually all websites, our hosting servers may automatically record standard web request logs (such as your IP address, browser type, referral URL, and timestamps). These logs are used strictly for security monitoring, server health diagnostics, and DDoS prevention.

4. Cookies & Third-Party Services

Online Ruler does not set tracking or profiling cookies. If third-party services (such as Google Fonts or privacy-focused analytics) are utilized, they operate under their respective privacy disclosures and do not profile your physical measurements.

5. Children's Privacy

Online Ruler is a general educational and utility tool suitable for students, designers, and educators of all ages. We do not knowingly collect personal identifiable information from children under 13.

6. Contact Information

If you have questions regarding this Privacy Policy, please reach out through our Contact Page.