Source Filter for NotebookLM – Bulk Select & Filter

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.