Best Gemini Notebook Extensions (2026)
The top Chrome extensions for Gemini Notebook (formerly NotebookLM), ranked by how much friction they remove between finding a source and using it in your notebook.
Gemini Notebook Toolkit
Best for capture, export and AI agentsCapture AI chats and the web into a searchable, exportable library
- One-click capture from ChatGPT, Claude, Gemini, Perplexity, YouTube, Reddit, X, LinkedIn, and any web page
- A searchable web library that sits between capture and your notebook
- Export to Markdown, LaTeX, JSON, or plain text; remote MCP server for AI agents
- Bulk import from open tabs, CSV, or URL lists
- Free plan; Pro $5/month; Lifetime $149 one-time with a 14-day refund
NotebookLM Tools (nlmtools)
Best value lifetime ($59)In-notebook power toolbar with Studio exports
- Toolbar inside notebooks for exporting, merging and renaming sources
- Studio ZIP export, MP3/MP4 downloads, quiz and flashcard CSV export
- Free plan; $7 for 30 days, $29 a year or $59 lifetime (one-time); 14-day refund
- Works in Chrome, Firefox, Edge, Brave, Arc and Opera
Kortex
Best for in-notebook automationsEstablished extension with notebook automations
- Notebook merge and compare, templates, prompt library, podcast RSS and scheduled automations
- About 100,000 Chrome Web Store users (October 2026)
- Free plan; Pro about $59 a year; $200 lifetime (also on AppSumo); 7-day refund
ExtendLM
Best for recording audio sourcesOrganization plus audio recording as a source
- Records microphone or tab audio as a notebook source
- Organization features for managing notebooks
- About 30,000 Chrome Web Store users with a 4.7 rating (September 2026)
NotebookLM Ultra Exporter
Best free exporterFree exporter for notebook content
- Exports chat logs, reports and notes to Markdown, PDF and Word
- Free and runs locally; about 80,000 Chrome Web Store users (October 2026)
- No capture from AI chats or the web, and no library
Native Gemini Notebook (no extension)
Zero setupAdd sources by hand inside the notebook
- Paste URLs and upload files directly; Collections group notebooks natively since July 2026
- Since 23 October 2026 you can use @Gemini Notebook inside Gemini chat
- No one-click capture from other AI chats, social, or the open web
Frequently Asked Questions
What is the best NotebookLM (Gemini Notebook) extension in 2026?
It depends on the job. Gemini Notebook Toolkit is best for capturing AI chats and web pages into a searchable, exportable library and for connecting AI agents over MCP. NotebookLM Tools is the best value for in-notebook Studio exports. Kortex leads on notebook automations, and ExtendLM on recording audio as a source.
Which NotebookLM extension has a lifetime deal?
As of October 2026: NotebookLM Tools sells a $59 lifetime license, Gemini Notebook Toolkit $149 (includes hosted library, 250 AI actions a month and the MCP server), and Kortex $200.
Do I need an extension to use Gemini Notebook?
No. Gemini Notebook (formerly NotebookLM) lets you paste URLs and upload files natively. An extension removes friction: one-click capture from AI chats, YouTube, social threads and any web page, plus library, export and automation features you do not get natively.
Can these extensions change Gemini Notebook usage limits?
No. Since 2 September 2026 Google meters usage by compute, refreshing every 5 hours up to a weekly cap. No extension can raise that; only a higher Google AI plan does.
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