Privacy Policy – Trello Card Numbers

Last updated: May 4, 2026

Trello Card Numbers does not collect, store, transmit, or sell personal data.

What the extension does

• Injects CSS on https://trello.com/b/* pages to display card numbers.
• Runs locally in your browser.

Data collection and usage

• No analytics.
• No tracking.
• No cookies.
• No remote code.
• No background network requests made by the extension.

Permissions

• Host access is limited to Trello board pages (https://trello.com/b/*) only, used solely to apply CSS.

Contact

For privacy questions, contact the extension publisher using the support contact listed on the Chrome Web Store page.