What sources can NotebookLM use?
Gemini Notebook supports audio, pasted text, Google Drive files, images, Word, text, Markdown, PDF, CSV, PowerPoint, web URLs, ePub, YouTube, and Gemini chats. Imports have format-specific limits: web URLs omit embedded media and nested pages, while YouTube requires a public captioned video.
In more detail
Google documents a 500,000-word or 200 MB per-source ceiling and 50 sources per notebook on the standard tier. Web imports include page text but not embedded media, nested pages, or paywalled material. YouTube imports require public captions and use the transcript. Toolkit adds verified capture adapters for major AI chats and social sources plus generic web-page text capture; it does not bypass access controls or Google’s limits.
Get one-click capture for NotebookLM
Gemini Notebook Toolkit saves ChatGPT, Claude, YouTube, Reddit, and any web page to NotebookLM in one click. Free to install.
Install Gemini Notebook Toolkit