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Privacy Policy

Last updated: June 27, 2026

1. Overview

At True Online Ruler (accessible via trueonlineruler.com), your privacy is our core priority. This Privacy Policy documents the types of information we collect and record, and how we handle your interaction data.

Unlike many other utility websites, our tool does not transmit, upload, or process any physical measurement data, screen layouts, or custom values to external servers. All operations happen strictly on the client side inside your web browser.

2. Data We Do Not Collect

We want to make it absolutely clear that our service does not collect:

  • Measurement Data: The values you measure, save, or drag on the viewport calipers are strictly transient and reside locally in your browser memory.
  • Personal Identification: We do not require registration, names, emails, billing details, or location tracking to calibrate or use the online rulers.
  • Images or Camera Feeds: The camera ruler descriptions are purely informative. Our web app does not request camera permission, nor does it scan any physical camera images.

3. Browser Cookies & Local Storage

Like most interactive websites, we utilize standard browser storage features to enhance your user experience:

  • Cookies: Standard cookies are used to track anonymized analytic parameters (e.g., page views) to help us measure server performance and optimization bottlenecks.
  • Local Storage: Our app uses browser `localStorage` to save your display calibration values (logical PPI) and active placement edge selections. This ensures that when you return to the tool, you do not need to repeat the calibration steps. This data never leaves your device.

4. Third-Party Analytics

To maintain a clean and reliable service, we may use basic analytics processors (like Google Analytics) to collect server telemetry and page view traffic. These providers collect standard device properties (such as user-agent, operating system, and screen dimensions) for metric analysis. No personally identifiable information (PII) is linked to these stats.

5. Contact Information

If you have additional questions or require more information about our Privacy Policy, do not hesitate to contact us through our dedicated Contact Us page.