🎨 GrayScale Overlay Extension - Privacy Policy

1. Information We Collect

The GrayScale Overlay Extension collects minimal data necessary for its functionality:

Data Type	What We Store	Purpose	Storage Location
Website Domains	Domain names you configure for auto-toggle (e.g., "youtube.com")	Automatically enable grayscale on specified websites	Chrome Local Storage
User Preferences	Intensity levels (0-100%) and effect types per domain	Remember your preferred settings for each website	Chrome Local Storage

2. What We DON'T Collect

We explicitly do NOT collect:

• ❌ Personal identifying information (name, email, age)
• ❌ Full browsing history or URLs
• ❌ Website content or user activity
• ❌ Financial or payment information
• ❌ Authentication credentials
• ❌ Personal communications
• ❌ Location data
• ❌ Health information

3. How We Use Your Data

Your data is used exclusively for:

• ✅ Automatically enabling grayscale on your configured websites
• ✅ Restoring your preferred intensity and effect settings
• ✅ Synchronizing settings across your Chrome devices (via Chrome Sync)

4. Data Storage and Security

• 🔒 Data stored in Chrome's secure storage system
• 🔒 No transmission to external servers
• 🔒 No analytics or tracking
• 🔒 You have full control over your data

5. Data Sharing

We do NOT share, sell, or transfer your data to any third parties.

• ❌ No data sales
• ❌ No third-party analytics
• ❌ No advertising networks
• ❌ No external APIs

6. Your Rights and Controls

You have complete control over your data:

• 🎛️ View Data: All stored data is visible in the extension popup
• 🗑️ Delete Data: Remove websites from your auto-toggle list anytime
• 🔄 Modify Data: Change intensity and effect settings anytime
• 🚫 Uninstall: Removing the extension deletes all stored data

7. Chrome Sync

If you have Chrome Sync enabled, your extension preferences will sync across your Chrome devices. This is handled by Google's Chrome Sync service according to Google's Privacy Policy.

8. Changes to Privacy Policy

Any changes to this privacy policy will be reflected in extension updates. Continued use of the extension constitutes acceptance of any changes.

9. Technical Details

Data Format Example:

{
  "autoToggleWebsites": ["youtube.com", "reddit.com"],
  "websiteSettings": {
    "youtube.com": {"intensity": 90, "method": "grayscale"},
    "reddit.com": {"intensity": 50, "method": "desaturate"}
  }
}
        

10. Open Source

This extension's source code demonstrates our commitment to transparency. You can verify that no external data transmission occurs.