RealDigitalRuler ("we", "our", "the Service") is committed to protecting your privacy. This policy explains what information we process when you use our browser-based online ruler, how we handle it, and your rights. The short version: we collect almost nothing, and we never sell, share, or transmit your personal data.
1. Information We Collect & Process
We do not require you to create an account, log in, or provide any personal information to use RealDigitalRuler.
The Service runs entirely in your local web browser. Any calibration data and user preferences you configure are stored locally on your device using your browser's localStorage API. This includes:
- Your screen's calculated PPI (Pixels Per Inch) and calibration scale
- Your preferred measurement units (cm, mm, inches, or px)
- Your preferred font size and font family
- Your active UI theme (cinematic charcoal or ice-blue light mode)
- Your active ruler edges selection
This configuration data is kept exclusively on your local device and is **never** transmitted to our servers or any third-party databases.
2. Cookies
RealDigitalRuler does not use advertising cookies, marketing cookies, or third-party tracking cookies. We utilize browser localStorage solely to remember your calibration values and display configurations between visits so you don't have to recalibrate every time you open the website.
You can delete all stored configuration data at any time by clearing your browser's cache and site data for this domain.
3. Third-Party Services
We load external fonts (such as Inter, JetBrains Mono, Share Tech Mono, Orbitron, and Roboto Mono) through the Google Fonts API. When your web browser downloads these font assets, Google may log your IP address to deliver the fonts and monitor usage. Please consult the Google Privacy Policy for more information on how they handle font requests.
We do not embed third-party tracking scripts, analytic systems, social sharing widgets, or advertising networks on the Service.
4. Data Security & Retention
Since we do not collect, store, or transmit your personal data to our servers, there is no personal data of yours stored in our infrastructure. Server access logs (such as IP addresses and request paths) are only used for standard server diagnostics and are automatically deleted after 90 days.
5. Children's Privacy
RealDigitalRuler is a utility tool designed for users of all ages. We do not knowingly collect or request personal information from children under the age of 13. By design, our service does not collect personal data from any user, ensuring compliance with COPPA (Children's Online Privacy Protection Act).
6. Contact
If you have any questions or feedback regarding this Privacy Policy, please reach out to us through our project repository or channels.