Privacy Policy

Effective date: June 20, 2026

IG MutualCheck ("the Extension") is an open-source Chrome extension that helps users identify Instagram accounts they follow that do not follow them back. This policy explains what data the Extension accesses, how it is handled, and what is stored.

1. Data the Extension accesses

When you run an analysis, the Extension reads the following information from your authenticated Instagram session:

Your username and user ID.
Your list of followers and accounts you follow (usernames, user IDs, display names, profile picture URLs, verified status, and private status).

This data is retrieved directly from Instagram's API using the session cookies already present in your browser. The Extension does not ask for your Instagram password.

2. How data is processed

All data processing happens locally in your browser. The Extension compares your followers and following lists inside the browser tab and displays the results in a panel on the page. No data is sent to any external server, third-party service, or analytics platform.

3. Data stored on your device

The Extension uses the chrome.storage.local API to store a single preference:

Language preference — whether you selected English or Spanish for the Extension interface.

No Instagram data (usernames, followers, following lists, or analysis results) is persisted in local storage. Results exist only in memory while the panel is open and are discarded when the panel is closed or the page is reloaded.

4. Data the Extension does NOT collect

No passwords or credentials.
No personal data sent to external servers.
No analytics, telemetry, or tracking.
No cookies created or modified.
No advertising or third-party SDKs.

5. Exports

You may choose to export analysis results as CSV or JSON files or copy them to the clipboard. These exports are generated locally in your browser and saved to your device. The Extension does not upload or transmit exported data.

6. Permissions used

activeTab — to inject the Extension panel into the active Instagram tab.
scripting — to inject content scripts when you activate the Extension.
storage — to save your language preference locally.
host_permissions (instagram.com) — to read your follower and following lists from Instagram's API using your existing session.

7. Third-party services

The Extension does not integrate with any third-party service. It communicates only with Instagram's API (www.instagram.com) using your existing browser session.

8. Children's privacy

The Extension is not directed at children under 13. It requires an existing Instagram account, which is subject to Instagram's own age requirements.

9. Changes to this policy

If this policy is updated, the new version will be published at this URL with an updated effective date. Continued use of the Extension after changes constitutes acceptance of the revised policy.

10. Contact

For questions about this privacy policy, open an issue on the GitHub repository.