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 overallThe most complete capture-and-export companion
- 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 — no other companion has one
- Export anything to Markdown, LaTeX, PDF, or JSON (anti-lock-in)
- Bulk import from open tabs, CSV, or RSS feeds
- Works in 16 languages; free to start, no credit card
Kortex Notebook
Social-thread captureEstablished capture extension with social imports
- Capture from major AI chats and social threads with metadata
- Studio exporter and audio-overview management
- Large existing user base and frequent updates
Generic web clippers
Simple page savesSave-to-read-later tools repurposed for notebooks
- Fine for saving a single article at a time
- No AI-chat capture, no notebook-aware routing, no bulk import
- Usually stop at "save the page" with no export path back out
Native Gemini Notebook (no extension)
Zero setupAdd sources by hand inside the notebook
- Paste URLs and upload files directly — no install needed
- No one-click capture from AI chats, social, or the open web
- Every source is added manually, one at a time
Frequently Asked Questions
What is the best NotebookLM (Gemini Notebook) extension in 2026?
Gemini Notebook Toolkit is the most complete companion: it adds one-click capture from 30+ platforms, a searchable web library between capture and your notebook, bulk import (tabs, CSV, RSS), and export to Markdown, LaTeX, PDF, and JSON. It is free to start and available in 16 languages. Kortex Notebook is a solid alternative, especially for social-thread capture.
Do I need an extension to use Gemini Notebook?
No. Gemini Notebook (formerly NotebookLM) lets you paste URLs and upload files natively. An extension like Gemini Notebook Toolkit only removes the friction — it adds one-click capture from AI chats, YouTube, social threads, and any web page, plus a searchable library and export tools you do not get natively.
Is there a free NotebookLM companion extension?
Yes. Gemini Notebook Toolkit has a free plan that covers the core one-click capture flow with no credit card required, within its published usage limits. You can upgrade to Pro for unlimited sources, workspaces, and prompts when your research outgrows the free tier.
Can these extensions export my sources back out of the notebook?
Most cannot. Gemini Notebook Toolkit exports any workspace to Markdown, LaTeX, PDF, or JSON, so your research is never locked in. This is one of the biggest differences between a full companion and a basic web clipper.
Start with the most complete companion
Capture from anywhere, keep a searchable library, and export your research in one click — free to start.
Add to Chrome — free