Privacy Policy

Last updated: April 27, 2026

1. Data Collection

The "Superpower for NotebookLM" Chrome Extension is a client-side application. We do not collect, store, or transmit your personal information, notebook content, source content, chat content, or browsing history. The extension does not include any analytics or telemetry — nothing about your usage is sent anywhere.

2. Data Storage

All user data generated by the extension (such as folder organizations, the local trash, prompt and chain libraries, per-notebook notes, message-sent counters, and settings preferences) is stored locally on your device using the browser's chrome.storage.local and chrome.storage.sync capabilities. This data may be synced across your own devices if you have Chrome Sync enabled, but it is not accessible to the developer.

3. Website Interactions

The extension interacts with notebooklm.google.com to provide its features. All of these interactions occur strictly within your own browser.

• Optimize Prompt: NotebookLM does not expose a public model API the extension can use to rewrite a prompt, so the extension opens a background tab on gemini.google.com inside your existing browser session, sends the prompt there to be rewritten, and reads the result back. This requires the optional gemini.google.com host permission, which is requested the first time you use the feature. Your prompt never leaves your browser, and it is never sent to any server owned by the developer.
• Sources Export, Studio Export, and Source Deletion: These features call NotebookLM's own internal endpoints (the same ones the website uses) directly from your browser to read source content, read Studio artifact content, or delete a source. Your session cookies are used to authenticate, exactly as they would be when you click in the NotebookLM UI itself. No content is sent to the developer.
• Studio media downloads: When you export an audio or video Studio artifact, the underlying media file lives on a googleusercontent.com CDN that blocks direct reads from the page. The extension's service worker fetches the file in your browser and hands the bytes back to the page so it can be saved. This is what the optional https://*/* host permission is used for, and it is only requested when you first export Studio media.
• Chains and Slash Commands: Chains submit prompts to NotebookLM on your behalf and watch the page locally to know when a step has finished. No network data is collected or transmitted externally.

4. Premium Licensing (Pro Features)

If you choose to activate a premium license key, the extension communicates with LemonSqueezy (a third-party payment and licensing platform) to validate your license. This involves sending your license key to api.lemonsqueezy.com for activation, periodic validation, and deactivation. This communication only occurs if you voluntarily enter a license key, and the api.lemonsqueezy.com host permission is optional — it is requested only at activation time. No personal payment information is handled by the extension itself; all purchases are processed directly by LemonSqueezy through their website.

5. Bug Reporting & Feature Proposals

The extension provides "Report a Bug" and "Propose Features" buttons that open Google Forms.

• Report a Bug: May automatically pre-fill your Extension Version and User Agent (browser/OS details) into the form URL.
• Propose Features: May automatically pre-fill your Extension Version into the form URL.
• Voluntary Submission: This data is only transmitted to Google Forms if you manually click "Submit." Simply opening the form does not send any data to the developer.
• Purpose: This information is used solely for troubleshooting bugs and prioritizing feature development.

6. Uninstall Feedback

When the extension is uninstalled, your browser may open a feedback form. The only data included automatically in the URL is the extension version number. No personal information is transmitted. Submitting the form is entirely voluntary.

7. Third-Party Services

This extension enhances the user interface of Google NotebookLM. It is not affiliated with Google or Alphabet Inc. The extension functions by injecting custom interface elements, managing local storage for organization, and automating specific user actions on the NotebookLM website. The following third-party services are involved:

• Google NotebookLM (notebooklm.google.com): The target website the extension enhances. All page interactions occur locally in your browser.
• Google Gemini (gemini.google.com): Used only by the Optimize Prompt feature, in a background tab inside your own browser session, as described in Section 3. Optional host permission, requested on first use.
• Google user content (googleusercontent.com): Source of audio/video files exported by the Studio Export feature, as described in Section 3. Optional host permission, requested on first use.
• LemonSqueezy (api.lemonsqueezy.com): License key validation for optional premium features, as described in Section 4. Only contacted when a license key is provided.
• Google Forms: Used only if you voluntarily submit a bug report, feature proposal, or uninstall feedback, as described in Sections 5 and 6.

8. Data Management & Liability

The extension interacts with the Google NotebookLM web interface to provide features such as notebook and source organization (folders, local trash), bulk actions, exports, prompt optimization, and reusable prompt/chain libraries. While we strive for reliability, the software is provided "as is." The developer is not responsible for any data loss, unintended modifications, or disruption of functionality caused by network errors, changes to the Google NotebookLM user interface, browser updates, or user error. The local trash is a soft-delete layer maintained on your device only — it does not protect notebooks against deletion from another device or from the official NotebookLM UI elsewhere.

9. Contact

If you have questions about this policy, please contact the developer via the support email listed on the Chrome Web Store.