Source LM

Chrome extension for bulk-importing sources into NotebookLM instead of one at a time.

Browser extensionfreemiumglobal

Source LM is a Chrome extension that bulk-imports material into a NotebookLM or Gemini Notebook — turning a JSON export, YouTube playlist, or pasted URL list into properly split sources — instead of adding them one at a time through NotebookLM's own file picker. It requires no account and runs with no telemetry. A free plan covers 5 bulk actions a month, with a one-time Pro purchase for more.

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