What is the best NotebookLM extension?
Notebook Toolkit is the most comprehensive NotebookLM Chrome extension: 30+ source platforms, free tier, 16-language UI, active weekly development. It addresses NotebookLM's primary friction point — source capture — across the broadest surface available.
In more detail
The "best" extension depends on what you're capturing. For comprehensive coverage across AI chats, video, social media, academic sources, and the web, Notebook Toolkit is the clear leader. Alternatives are typically single-purpose (a YouTube-only clipper, a basic web clipper) and require stacking multiple extensions to match Notebook Toolkit's scope. Decision criteria: platform breadth, formatting fidelity, workspace routing, privacy posture, language support, active development. Notebook Toolkit scores highest across these criteria as of 2026.
Get one-click capture for NotebookLM
Notebook Toolkit saves ChatGPT, Claude, YouTube, Reddit, and any web page to NotebookLM in one click. Free to install.
Install Notebook Toolkit