Privacy Policy

1. Information We Do Not Collect (Client-Side Media)

When you upload custom PNG/JPEG images, use our automatic background remover, or create sketches in our drawing studio on HeightComparisonOnline.com, those files are processed exclusively inside your device's local browser memory (via HTML5 Canvas and Object URLs). We never upload, transmit, or store your personal photos or custom drawings on our servers.

2. Local Browser Storage

To provide a seamless user experience, we use your browser's standard localStorage to save:

• Your preferred display theme (Light Mode or Dark Mode).
• Your current comparison stage state (selected models, heights, and unit preferences such as centimeters vs. feet and inches) so your work is preserved if you refresh the page.

You can clear this data at any time by clicking the "Reset" button on the comparison board or clearing your browser cache.

3. Analytics & Cookies

We use Google Analytics (gtag.js) to understand aggregate, anonymized traffic patterns—such as which calculators, languages, and comparison pages are most helpful to visitors. Google Analytics may set first-party cookies to distinguish unique sessions and measure page performance. IP addresses are anonymized in accordance with modern privacy standards.

4. Third-Party Links & Advertising

Our website may contain reference links to public encyclopedias, health organizations (WHO, CDC), or display third-party advertisements (such as Google AdSense). Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this or other websites. Users may opt out of personalized advertising by visiting Google Ads Settings.

5. Your GDPR & CCPA Rights

Depending on your jurisdiction (including the European Economic Area, United Kingdom, Brazil LGPD, and California CCPA), you have the right to request access to, correction of, or deletion of any personal information you have voluntarily submitted to us (for example, via email support inquiries).

6. Children's Privacy

HeightComparisonOnline.com is a general-audience educational and visual reference utility. We do not knowingly collect personal information from children under the age of 13.

7. Contact Us Regarding Privacy

If you have any questions about this Privacy Policy or our data practices, please contact our Privacy Officer at: [email protected].