Source Filter for NotebookLM – Bulk Select & Filter

About

Managing a NotebookLM notebook with dozens — or hundreds — of sources? Selecting the right ones by hand is slow and error-prone. This side-panel tool lets you filter and bulk-select your sources in seconds.

▼ What it does
• Search by title — instantly narrow down sources by keyword
• Filter by type — PDF, Spreadsheet, Text/Web, or Markdown
• Bulk select / deselect — check every shown source (or clear them) in one click
• Clean start — opening the panel clears the current selection, so you always begin from zero
• Reload — re-sync the list after you add sources or switch notebooks

▼ Perfect for
• Researchers & students working across many papers and documents
• Analysts and knowledge workers running large reference notebooks
• Anyone who feeds lots of sources into NotebookLM and needs to pick a subset fast

▼ How to use
1. Open your notebook on notebooklm.google.com
2. Click the extension icon to open the side panel
3. Filter by keyword or type, then click "Select all shown"

▼ Privacy
This extension does not collect, store, or transmit any data. It works entirely in your browser, only on notebooklm.google.com pages.

Note: This is an independent tool and is not affiliated with, or endorsed by, Google.