Chrome Extension Privacy Policy

Last updated: September 2026

Summary: The CompareLists Chrome extension runs 100% locally on your machine. We do not collect personal data, we do not track your browsing, and your lists are never sent to any server.

1. Your Lists and Data

When you paste text into List A or List B, all comparisons happen inside your browser using JavaScript. The extension does not transmit your data over the internet, and we do not operate a database to store what you compare.

2. Chrome Extension Storage

The extension uses Chrome local storage (chrome.storage.local) on your device for two simple purposes:

Remembering your text and options (delimiter, trim, case sensitivity) so you don't lose your work when you close the popup.
Remembering your preferred dark or light theme.

This data stays on your computer. You can clear it anytime by clicking Clear All inside the popup, or by uninstalling the extension.

3. Clipboard Permission

The extension asks for clipboardWrite permission for one reason only: to let you click the Copy buttons to quickly copy results back to your clipboard.

4. No Tracking, No Analytics, No Ads

The extension contains zero tracking scripts, zero advertising libraries, and zero analytics. It does not monitor your open tabs or view your browsing history.

5. Chrome Web Store Compliance

We follow the Chrome Web Store Developer Program Policies. We do not sell user data, we do not share data with third parties, and we do not use your information for advertising or credit assessments.

6. Questions

Questions or suggestions? The contact page is the best way to reach me.