📋 TL;DR — The short version

1. Overview

YouTube Insights ("the Extension") is a Chrome browser extension that helps you understand and manage your YouTube viewing habits. Privacy is a core principle of this project — the Extension is designed from the ground up to operate entirely on your local device.

This Privacy Policy explains what information the Extension accesses, how it is used, where it is stored, and your rights regarding that data.

2. Information We Do NOT Collect

The Extension does not collect, transmit, or store any of the following:

3. Information the Extension Accesses Locally

To provide its core functionality, the Extension reads the following data entirely within your browser:

3-1. YouTube page content

This data is read in memory only to build your local watch history. It is never sent anywhere outside your browser.

3-2. Local storage

The Extension stores the following data in chrome.storage.local and IndexedDB — both of which are isolated to your browser profile and never synced to any server:

All data remains exclusively on your device. Uninstalling the Extension removes all stored data from your browser.

4. Permissions Explained

The Extension requests the following Chrome permissions. Here is exactly why each is needed:

storage

Used to save your watch history, settings, and daily summaries to chrome.storage.local on your device only.

tabs

Used to detect when you navigate to or away from YouTube, and to redirect the active tab when Hard Block mode is triggered.

Host permission: *://*.youtube.com/*

Required to inject the content script that reads playback state and video information from YouTube pages.

No permission is used to read data from any website other than YouTube.

5. No Third-Party Data Sharing

The Extension does not integrate with any analytics service (e.g., Google Analytics, Mixpanel, Amplitude, Firebase) or any third-party SDK that could receive your data.

The Extension does not make any outbound network requests during normal operation. The only external URLs accessed are ones you explicitly click (e.g., the Chrome Web Store page, the support link), and those open in a new tab in your browser — no data is sent by the Extension itself.

6. Children's Privacy

The Extension is a general-purpose productivity tool and is not directed at children under 13. It does not collect any personal information from any user, including children. The Child Guard feature is a parental control tool designed to be configured by parents to manage their child's viewing habits — it does not collect or transmit any data about the child.

7. Data Retention and Deletion

Your watch data is retained locally on your device until you choose to delete it. You can permanently delete all stored data at any time:

Because we have no servers or databases, there is no "account" to delete and no backup of your data exists anywhere other than your own device.

8. Security

Because all data is stored locally in your browser's sandboxed storage, it is subject to Chrome's built-in security model. It is not accessible by other extensions, websites, or applications. We do not control your device security, so we recommend keeping your browser and OS up to date.

9. Changes to This Policy

If we make material changes to this Privacy Policy, we will update the effective date at the top of this page and, where appropriate, note the change in the Extension's update release notes on the Chrome Web Store.

Continued use of the Extension after changes are posted constitutes your acceptance of the updated policy.

10. Contact

If you have any questions or concerns about this Privacy Policy, please reach out:

✉️ jeon.chanhwan@gmail.com