Privacy Policy

Notebook OS ("the Extension", "we", "us") is a Chrome browser extension that enhances Google NotebookLM by adding an improved library interface, in-app YouTube and academic source search, a side-panel Note Studio for capturing notes and screenshots from web pages, and a voice memo feature. This Privacy Policy describes in full what personal data and other information the Extension collects, why it is collected, how it is used, where it is stored, how long it is kept, with whom it is shared, and what rights you have over your data.

1. Data We Collect

1.1 Data Collected Automatically

When you use the Extension, the following data may be read from your browser environment to provide requested features:

• Google account email address— detected from the NotebookLM page when you sync or use the Extension, used solely to identify which account to operate on and to verify premium access.
• NotebookLM page content— notebook titles, IDs, URLs, summaries, source counts, tags, folders, pinned artifacts, and user-created organization settings read from the NotebookLM interface.
• Active page information— the URL and readable text content of the current browser tab, only when you explicitly trigger a feature that adds page content to NotebookLM.
• Feature usage counters— counts of how many times specific free-tier features have been used in the current billing period, stored locally and synced to our backend for limit enforcement.

1.2 Data You Provide

• Notes and drafts— note titles and rich-text content you write in the Notebook OS side panel.
• Website content you choose to capture— when you use Web Snip or page capture, the Extension takes a screenshot of the visible part of the current tab and/or reads selected text from the page, only at the moment you click the capture button.
• Voice recordings— when you use the voice memo (Brain Dump) feature and click Record, the Extension records audio from your microphone. Recording starts only on your explicit click and can be paused, stopped, or deleted at any time.
• Search queries— YouTube search terms and academic search terms you type in the side panel.
• License and subscription information— your email address and license key when you activate a premium plan.
• Settings and preferences— interface options, library organization (folders, tags, summaries), and pinned artifacts.

1.3 Data We Do Not Collect

Notebook OS does not collect: passwords, full browsing history, payment card numbers, private authentication tokens, precise geolocation, health information, personal communications, or any sensitive personal information not described in this policy.

1.4 Cookies and Tracking

Notebook OS does not set cookies and does not use cross-site tracking, advertising pixels, fingerprinting, or any behavioral analytics technology. The Extension does not track your activity across websites.

2. How We Use Your Data

All data is used solely to provide, maintain, and improve Extension features:

• Displaying and organizing your NotebookLM library within the Extension.
• Saving notes, text, web sources, YouTube sources, screenshots, images, and audio files into NotebookLM at your explicit request.
• Identifying your active NotebookLM account so content is saved to the correct account.
• Persisting drafts, folders, tags, favorites, pinned artifacts, summaries, and UI preferences between sessions.
• Validating license keys, checking premium access status, and enforcing monthly free-tier feature limits.
• Executing user-initiated searches of public sources such as YouTube, RSS feeds, Semantic Scholar, OpenAlex, Crossref, Unpaywall, Europe PMC, bioRxiv, medRxiv, and ClinicalTrials.gov.

Notebook OS does not sell, rent, or trade user data. Notebook OS does not use user data for advertising, profiling, or any purpose unrelated to providing the Extension's stated features.

3. How We Store Your Data

• Local storage. Notes, captures, voice recordings, settings, and library organization are stored on your own device using chrome.storage.local and chrome.storage.sync. This data never leaves your device unless you explicitly trigger a feature that requires it.
• In transit. All communications between the Extension and any server — including our own backend — are encrypted using HTTPS/TLS.
• Retention and deletion. Locally stored data remains until you delete it through the Extension UI, clear Chrome extension storage, or uninstall the Extension. Backend data (email address, license key, plan status, and feature usage counts) is retained while your account or license is active. After termination, backend records are deleted within 90 days unless retention is required for legal or accounting purposes.

4. Data Shared With Third Parties

Notebook OS does not share data with third parties for advertising, analytics, or any purpose other than delivering the features you request. The following services may receive limited data only when you use a feature that requires them:

Notebook OS does not share locally stored notes, drafts, organization data, screenshots, audio, or extracted page text with the Notebook OS backend. Only email address, license key, feature identifier, and usage count are transmitted to the backend for access control. We do not use or transfer user data to determine creditworthiness or for lending purposes.

5. Chrome Permissions

• storage / unlimitedStorage— save drafts, settings, metadata, folders, tags, summaries, and usage counters locally on your device.
• sidePanel— display the Notebook OS side panel.
• tabs / activeTab— detect the current page URL and title, open NotebookLM, and execute user-requested actions.
• scripting— inject scripts into NotebookLM and supported pages to read content needed for user-requested features.
• downloads— create temporary local files for text, image, and audio uploads to NotebookLM.
• debugger— capture screenshots and simulate file drag-and-drop uploads into NotebookLM where the standard browser upload API is insufficient.
• Host permissions— access NotebookLM, Google services, and the academic and course platforms listed above to perform user-requested actions.

6. Your Rights

Depending on your jurisdiction, you may have the following rights regarding your personal data:

• Access— request a copy of personal data we hold about you.
• Correction— request correction of inaccurate personal data.
• Deletion— request deletion of your personal data from our backend systems.
• Data portability— request your personal data in a portable format.
• Restriction / Objection— request that we restrict certain processing or object to it.
• Withdraw consent— where processing is based on consent, withdraw it at any time.

For locally stored data, exercise these rights directly: delete notes, drafts, folders, tags, and preferences from the Extension UI, or uninstall the Extension to remove all locally stored data.

For backend data, contact us at notebook.os.contact@gmail.com to request access, correction, or deletion.

7. Children's Privacy

The Extension is not directed at children under the age of 13 (or the applicable minimum age in your jurisdiction). We do not knowingly collect personal data from children. If you believe a child has provided personal data to us, please contact us and we will delete it promptly.

8. International Data Transfers

The Notebook OS backend is hosted in the United States. If you are located outside the United States, your data (email address, license key, and usage counts) may be transferred to and processed in the United States. We apply appropriate safeguards to protect your data in accordance with this policy.

9. Changes to This Policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top of this page will reflect the most recent revision. Continued use of the Extension after changes are posted constitutes your acceptance of the updated policy.

10. Contact

For privacy questions, data access requests, or data deletion requests, contact: notebook.os.contact@gmail.com