Privacy Policy for Google Sheets Dark Mode Extension
Last updated: August 5, 2026
1. Overview
Google Sheets Dark Mode ("we", "our", or "the extension") is committed to protecting your privacy. This Privacy Policy explains what information is collected, how it is used, and the explicit purpose of all Chrome permissions requested by the extension.
2. Data Collection and Usage
We believe in minimal data collection. We do not track your browsing history, sell your personal data, or harvest sensitive personal information.
- Local Preferences: Custom dark mode settings (brightness, contrast, sepia, hue, enabled state) are stored locally in your browser.
- Account / Subscription Information: If you choose to upgrade to PRO via MyExtHub (https://myexthub.com), your user email and subscription status are synchronized securely to verify active licensing.
3. Explanation of Requested Permissions
To provide dark mode functionality and manage PRO subscriptions, Google Sheets Dark Mode requests the following Chrome permissions:
A. Standard Permissions:
- "storage":
Purpose: Allows the extension to store user preferences (such as dark mode toggles, color adjustments, and theme settings) locally on your device or across synced devices using Chrome Storage. It also temporarily holds trial/licensing status.
- "cookies":
Purpose: Used to securely store and retrieve trial start timestamps on domain https://myexthub.com. This ensures consistent trial tracking and prevents fraudulent state resets upon re-installation.
B. Host Permissions:
- "*://docs.google.com/spreadsheets/*":
Purpose: Required to inject the dark mode custom CSS styling directly into Google Sheets web pages. Without this permission, the extension cannot modify the visual display of spreadsheets or render the dark theme.
- "https://myexthub.com/*":
Purpose: Required to communicate with the authentication and licensing server at MyExtHub (https://myexthub.com) to verify PRO account status, synchronize user logins, and grant access to premium customization features.
4. Data Sharing and Security
- Third-Party Disclosure: We do NOT sell, rent, trade, or transfer any user data to third parties.
- Network Security: All communication with https://myexthub.com for account/subscription checks is transmitted over encrypted HTTPS connections.
5. Data Retention & Control
All stored settings can be reset or removed by clearing extension data or uninstalling the Chrome extension.
6. Contact & Inquiries
If you have any questions regarding this Privacy Policy or your data privacy, please contact support via the MyExtHub platform (https://myexthub.com).