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source-lm

Chrome extension for NotebookLM (Gemini Notebook): add YouTube playlists and channels, split a JSON export into Markdown sources, add the pa

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Overview

Chrome extension for NotebookLM (Gemini Notebook): add YouTube playlists and channels, split a JSON export into Markdown sources, add the page you are on.

AI summary

source-lm is a Chrome extension designed for users of NotebookLM (Gemini Notebook) that facilitates the bulk addition of sources from various formats, including YouTube playlists, JSON exports, and web pages, directly into the notebook without requiring an account.

Key Features

  • Add YouTube playlists and channels in bulk or individually.
  • Split JSON exports into multiple Markdown files for easy import.
  • Directly add the current page or a list of URLs as sources.
  • Manage duplicates and filter sources within the notebook.
  • No backend processing; all data is handled in memory and sent directly to the notebook.

Who Is It For

Target audience

Individuals and small teams who utilize NotebookLM for note-taking and knowledge management, particularly those engaged in content curation or research.

Best for

Users looking for a streamlined way to import multiple sources into NotebookLM without manual entry, particularly those who frequently work with YouTube content or JSON data.

Not for

Individuals seeking a comprehensive project management tool or those needing advanced automation features beyond basic source imports.

Strengths & Weaknesses

Biggest strength

The tool allows for bulk uploads and efficient management of sources, enabling users to add content quickly and easily without backend processing.

Biggest weakness

The lack of advanced features such as scheduled imports or comprehensive automation limits its utility for users needing more robust project management capabilities (AI-inferred; may be outdated – founders can correct this)

Classification

Competitors
EvernoteNotionTrelloRoam Research

Alternatives to source-lm

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Community

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How we sourced this: Observed fields () were crawled from https://source-lm.com and are stated as fact. AI-inferred fields () were generated by gpt-4o-mini and are always labelled – never presented as measured fact. Last updated: 28 August 2026.