Privacy Policy

Last updated: September 2026

What we collect

Trello Card Numbers does not collect, store, or share any personal data. There are no accounts, no sign-ups, and no ads.

Local storage

This website does not use browser local storage or save any data on your device. The Trello Card Numbers extension itself stores card numbers locally in your browser via the Chrome storage API and does not send your Trello data to any server.

Contact form

If you use the contact form, your name, email address, and message are submitted for the sole purpose of replying to your enquiry. This information is not shared with third parties.

Analytics

This site uses Google Analytics 4 to understand how visitors use the site. Google Analytics may set cookies to collect anonymous usage data such as pages visited and session duration; no personally identifiable information is collected. See Google's Privacy Policy for details.

Third-party links

This site links to Chrome Web Store and Trello. Their own privacy policies apply when you visit those services.

Contact

Questions? Get in touch.