NotebookLM Manager

About

NotebookLM Manager adds a "Delete selected" button directly into the Google NotebookLM interface, letting you remove multiple sources in bulk — something NotebookLM doesn't support natively.

How it works:
- Open any notebook in NotebookLM
- Select sources using the existing checkboxes
- Click the new "Delete selected (N)" button that appears next to "Add sources"
- Confirm in the dialog — done

Features:
- Bulk delete any number of sources at once
- Button integrates seamlessly into the NotebookLM UI — same style, same font, same height
- Automatically updates the count of selected sources in real time
- Progress indicator during deletion
- Clean confirmation dialog (no browser popups)
- Works entirely within the page — no external servers, no data collection
- Automatically follows the language set in NotebookLM

Supported languages: 
🇬🇧 English · 🇵🇱 Polish · 🇩🇪 German · 🇫🇷 French · 🇪🇸 Spanish · 🇵🇹 Portuguese · 🇯🇵 Japanese · 🇰🇷 Korean · 🇮🇹 Italian · 🇨🇳 Chinese (Simplified) · 🇳🇱 Dutch

Privacy: This extension runs exclusively on notebooklm.google.com. It does not collect, transmit, or store any user data. It requires no special permissions beyond accessing the NotebookLM page itself. All deletion requests are made directly to Google's own API using your existing authenticated session.