At RulerPro, your privacy is our absolute priority. This website is designed to be a local utility tool. We operate on a very simple and strict policy: we do not collect, store, track, or share your personal data.
RulerPro is a client-side web application. Every calculation (transforming pixel coordinates to real inches or centimeters), canvas rendering frame, and measurement guide is processed entirely on your device's CPU and graphics processors inside your browser sandbox. No measurement details, coordinate placements, or screen sizes are sent to our servers.
To make your experience seamless, we use the browser's built-in localStorage API to persist your settings:
This data never leaves your device. Clearing your browser cookies/cache or deleting localStorage details will reset your calibration data to the default states.
RulerPro does not drop trackers or marketing cookies. If we use basic system metrics to check site speed and usage details, we only collect aggregated, completely anonymous diagnostic indicators that cannot trace back to your hardware.