Privacy Policy for Site Spy

Last Updated: February 16, 2026

Introduction

Site Spy ("the Extension") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our browser extension.

Information We Collect

Data Stored Locally

The Extension stores the following data locally in your browser only:

1. Monitored URLs: Website URLs you choose to track
2. API Configuration: Your unique API key for connecting to the Site Spy server
3. Cached Watch Data: Temporary cache of your monitored websites list
4. Notification Preferences: Your chosen notification settings (browser notifications, sound alerts, or silent mode)
5. Check Intervals: Your configured frequency for automatic change detection

Important: All this data is stored locally in your browser's storage and is never transmitted to any third-party services except the Site Spy server you configure.

Data Sent to Your Configured Server

When you use the Extension, the following data is sent to the Site Spy server:

1. Website URLs: URLs you choose to monitor
2. API Key: Your unique identifier for authentication
3. Snapshot Requests: Requests to fetch and compare website snapshots
4. Tag Assignments: Tags you assign to organize your tracked websites

How We Use Your Information

The Extension uses your information solely to:

1. Track Website Changes: Monitor the websites you specify for content changes
2. Display Comparisons: Show you visual differences between website versions using side-by-side diff views
3. Maintain Your Watch List: Store and manage your list of monitored websites
4. Authenticate Requests: Use your API key to securely communicate with the server
5. Send Notifications: Alert you when tracked websites change, based on your preferences

Data Storage and Security

Local Storage

• All configuration and watch data is stored in your browser's local storage
• This data remains on your device and is not accessible to us or any third parties
• You can clear this data at any time by removing the extension or clearing browser data

Server Storage

• Website snapshots and monitoring data are stored on the Site Spy server
• Server data is protected by your unique API key

Third-Party Services

No Analytics or Tracking

The Extension does NOT:

• Use Google Analytics or any analytics services
• Track your browsing history
• Collect personal information
• Share data with advertisers
• Use cookies for tracking purposes

Permissions Explained

The Extension requests the following browser permissions:

1. tabs: To read the current tab's URL when you click "Track Current Page"
2. storage: To save your watch list, preferences, and configuration locally in your browser
3. alarms: To schedule automatic periodic checks for website changes at your configured intervals
4. notifications: To send you browser notifications when a tracked website changes
5. contextMenus: To provide right-click menu options for quickly adding pages to your watch list
6. scripting: To inject content scripts for detecting changes on tracked pages
7. host_permissions (http and https): To allow the extension to communicate with the Site Spy server and fetch content from any website you choose to monitor

Note: The Extension only accesses websites you explicitly choose to track. It does not monitor your general browsing activity.

Data Sharing

We do NOT:

• Sell your data to third parties
• Share your data with advertisers
• Use your data for marketing purposes
• Access your personal information

The only data transmission occurs between:

1. Your browser and the Site Spy server (for monitoring functionality)
2. Your browser's local storage (for saving preferences)

Your Rights and Choices

You have the right to:

1. Access Your Data: All your data is stored locally in your browser and on the configured server
2. Delete Your Data:
   • Remove the extension to delete all local data
   • Delete watches individually through the extension interface
3. Export Your Data: Your watch list is accessible through the extension interface

Children's Privacy

The Extension is not intended for use by children under the age of 13. We do not knowingly collect personal information from children under 13.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify users of any material changes by:

• Updating the "Last Updated" date at the top of this policy
• Posting a notice in the extension's update notes

Data Retention

• Local Data: Retained until you remove the extension or clear browser data
• Server Data: Retained until you delete watches or request data deletion
• API Keys: Retained until you generate a new key or request deletion

Contact Information

If you have questions or concerns about this Privacy Policy or your data:

Developer: Vitaly Kuprin Website: https://vkuprin.com/contact

Compliance

This Extension complies with:

• Chrome Web Store Developer Program Policies
• Firefox Add-on Policies
• General Data Protection Regulation (GDPR) principles
• California Consumer Privacy Act (CCPA) principles

Your Consent

By using the Extension, you consent to this Privacy Policy and agree to its terms.