Privacy Policy

1. Introduction

Welcome to Online Measurer ("we," "our," or "us"). We operate the onlinemeasurer.com website (the "Service"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our online ruler tool and related services.

By using the Service, you agree to the collection and use of information in accordance with this policy. If you do not agree with the terms of this Privacy Policy, please do not access the Service.

2. Information We Collect

Device and Calibration Data

When you use Online Measurer, we store calibration data locally in your browser using localStorage. This includes your screen resolution, pixel density (PPI), device type, selected measurement unit, and calibration preferences. This data never leaves your device — it is stored entirely in your browser's local storage.

Automatically Collected Information

When you visit our website, we may automatically collect certain information including your IP address, browser type and version, operating system, referring URLs, pages visited, time and date of visit, and time spent on pages. This information is collected through standard web server logs and analytics tools.

Cookies and Local Storage

We use localStorage to save your calibration settings and preferences (theme, unit selection, ruler visibility) so they persist between visits. We do not use tracking cookies. Analytics cookies may be set by third-party services we use to understand traffic patterns.

3. How We Use Your Information

We use the information we collect to:

• Operate and maintain the Online Measurer service
• Improve calibration accuracy for your specific device
• Analyze usage patterns to improve the user experience
• Detect and prevent abuse or security issues
• Comply with legal obligations

4. Data Storage and Security

All calibration data is stored locally on your device using the browser's localStorage API. This data is not transmitted to our servers. We implement appropriate technical and organizational measures to protect any automatically collected information against unauthorized access, alteration, disclosure, or destruction.

Please note that no method of electronic transmission or storage is 100% secure. While we strive to protect your data, we cannot guarantee absolute security.

5. Third-Party Services

We may use third-party services that collect information used to identify you. These services include:

• Google Analytics — for website traffic analysis
• Google Fonts — for font delivery (Inter and JetBrains Mono)

Each of these services has its own privacy policy governing how they use and protect data. We encourage you to review their privacy policies.

6. Your Rights

Depending on your location, you may have the following rights:

• The right to access the personal information we hold about you
• The right to request correction of inaccurate data
• The right to request deletion of your data
• The right to object to or restrict processing of your data
• The right to data portability

Since all calibration data is stored locally on your device, you can clear it at any time by clearing your browser's localStorage or site data for onlinemeasurer.com.

7. Children's Privacy

Our Service does not knowingly collect personal information from children under 13. If we discover that a child under 13 has provided us with personal information, we will immediately delete it from our servers. If you are a parent or guardian and you are aware that your child has provided us with personal information, please contact us.

8. Changes to This Privacy Policy

We may update our 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. You are advised to review this Privacy Policy periodically for any changes.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us at onlinemeasurer.com/contact or email us at privacy@onlinemeasurer.com.