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QUESTIONS · SOURCES AND LIMITS

What is the NotebookLM source limit?

Verified · NotebookLM / Gemini Notebook·Markdown

Short answer

Google documents a limit of 50 sources per notebook on the free tier, with each source limited to 500,000 words or 200 MB. Paid Google plans raise the number of sources per notebook. The limits are set by Google; no extension can raise them.

What to know

  • Every web page, file, video and pasted text counts as one source.
  • Daily limits on chat and on Audio and Video Overviews also depend on your Google plan.
  • Google changes these numbers; its help page for NotebookLM is the authority.

Google changes these menus often. The item's own menu in your notebook shows what is built in today.

Frequently asked questions

What happens when I reach the limit?

NotebookLM refuses new sources for that notebook. Remove sources, merge several into one, or start another notebook.

Does Ultra Exporter Pro raise the limit?

No. Pro removes the extension import quota only. Google limits still apply.

Related guides

How do I work around the NotebookLM source limit?

You cannot raise the limit, but you can fit more into it. Merge related sources into one text source, combine small text files before importing, and split.

Merge NotebookLM sources into one to free source slots

When a notebook reaches its source limit, NotebookLM Ultra Exporter can combine several sources into one text source that keeps a table of contents, the.

How do I add multiple URLs to NotebookLM at once?

NotebookLM accepts website links through its add-source dialog, a few at a time. To import a long list, paste the URLs, one per line or mixed into text, into.

How do I add a YouTube playlist to NotebookLM?

NotebookLM takes YouTube videos one link at a time and does not expand a playlist. Paste the playlist URL into the YouTube import of NotebookLM Ultra.

Why can NotebookLM not import my website link?

NotebookLM fetches links from Google servers, not from your browser. A page fails when it needs a login, sits behind a paywall, blocks automated requests, or.

How do I add a ChatGPT conversation to NotebookLM?

NotebookLM cannot open a ChatGPT conversation from its link. Either copy the conversation and paste it as a text source, or open the chat with NotebookLM.

What file types does NotebookLM support as sources?

NotebookLM accepts PDF, text and Markdown files, Word documents, Google Docs and Slides, web page links, YouTube links, audio files, images and pasted text.

How do I upload a PDF that is too large for NotebookLM?

A PDF over 200 MB or 500,000 words is rejected by NotebookLM. Split it into parts and upload each part as its own source.