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NotebookLM
ChatGPT Exporter
ChatGPT to Obsidian
Superpower for NotebookLM
NotebookLM takes sources one at a time, through a file picker. Source LM takes the batch.
Point it at a JSON or Telegram HTML export, a YouTube playlist or a list of links, and the sources land in the notebook you already have open. Nothing is downloaded to disk: files are built in memory and sent through the notebook page's own upload path.
WHAT YOU CAN ADD - JSON datasets: preview how the file will be split into Markdown packed to the notebook's word limit, then upload. Records are never cut in half, and re-running the same file adds only what is new. - Telegram chat exports: the messages.html files from "Export chat history", split the same way. - YouTube videos, playlists and channels, from the popup or from an "Add to notebook" button inside YouTube itself. The top comment threads can ride along as a separate source. - Web pages: one link or a whole list, one per line. Pages a server cannot fetch (logged-in or JavaScript-rendered) are read from the tab you have open. - Selected text: right-click, "Add selection to Notebook".
IN THE SOURCES PANEL Filter by name, select duplicates in one click, delete everything checked in one batch, and replace sources NotebookLM failed to fetch with the text of the open page.
PRIVACY No server behind the extension and no account to create. Files, pages and notebook contents never leave the browser: it acts inside your own signed-in tab. Only your settings and pending jobs are stored, locally.
FREE AND PRO Single sources are always free. Bulk actions are free for 5 runs a month, then need a one-time $29 licence, no subscription. Chrome and Edge. Source-available under a noncommercial licence (not OSI open source): github.com/source-lm/source-lm-extension
Source LM is an independent project, not created by, affiliated with or endorsed by Google. NotebookLM, Gemini and YouTube are trademarks of Google LLC.
Google Keep Source LMGoogle Keep is recommended for individuals who need a basic, user-friendly note-taking tool without excess features. It is particularly beneficial for users who are frequent users of other Google services, as it offers seamless integration. It's an ideal choice for students, professionals, or anyone needing to keep quick, organized notes and lists.
Source LM's answer:
It builds the source files in memory and pushes them through the notebook page's own upload path, so nothing is written to disk and there is no backend and no account. A JSON or Telegram export becomes as many Markdown sources as it takes, packed to a 400,000-word budget under NotebookLM's 500,000-word cap per source, and a record is never cut in half. Run it again on a grown export and only the new records upload, because the state is read back from the notebook's own source names rather than from a local watermark.
Source LM's answer:
Two practical differences. First, there is no server in the path: the extension acts inside your own signed-in tab, so your files, pages and notebook contents never reach a third party, and the code ships unminified and source-available so you can check that. Second, the price is a one-time $29 licence instead of a subscription, and single sources - one page, one link, one video, one selection - stay free forever; only bulk actions are metered, at 5 free runs a month.
Source LM's answer:
People who already work in NotebookLM and have hit its one-at-a-time file picker: researchers and students loading a corpus of papers or transcripts, support and ops teams dumping ticket or chat exports, and anyone who wants a Telegram history, a YouTube playlist or a channel inside a notebook. No technical setup is assumed - it is a Chrome and Edge extension, not a script to run.
Source LM's answer:
It started with a chat export that nobody wanted to split by hand: thousands of messages that NotebookLM would only take as files under its per-source word cap. The first version was a script producing Markdown chunks, and the annoying part was that the chunks still had to be dragged into the notebook one by one. Once the upload could go straight into the open notebook, the disk step disappeared, and everything else - YouTube, link lists, the current page, selected text - was routed through the same path.
Source LM's answer:
TypeScript on Chrome's Manifest V3, bundled with esbuild, with zero runtime dependencies and no framework: the popup is plain DOM. There is no backend - uploads go through the notebook page's own upload endpoint from inside your tab, with a DOM-injection fallback if that path changes, and settings and pending jobs live in chrome.storage. Licence keys are checked directly against the payment provider's public API, so there is still no server of ours in the path.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
AISaver NotebookLM Exporter - Export NotebookLM chats and Studio Notes to Markdown, PDF, DOCX, HTML, JSON, and text files in bulk.
OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Sourclip - The research workflow for NotebookLM. Capture, organize,export, and enrich your notebooks with sources, prompts, MCP servers, and more.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Kortex Notebooklm - Kortex adds export, import, automation, and organization directly inside NotebookLM — trusted by 80,000+ users. Free to install, no credit card needed.