NotebookLM
Google's assistant that reads your documents — and turns them into a conversation.
By Thiago Lourenço Martins
A reader that understands everything you throw at it
NotebookLM is a free tool from Google. You upload your files — a PDF, a document, a website link, even a YouTube video — and it answers questions about that content, writes summaries, and turns it all into a podcast with two hosts having a conversation. What sets it apart from a regular chat: it only answers based on what you uploaded — it doesn't make things up, and it shows you which passage each answer came from.
The 60 pages you keep putting off become audio
A 60-page contract. A technical report. A government booklet packed with hard-to-read jargon. You know you need to understand it — but just seeing how long it is wears you out.
Upload the document, ask for the "audio overview," and you get an episode with two hosts walking through the main points, in English. You listen while doing something else — and you finish with the big picture before you've even opened the file.
How people in different fields use it
Found a great but dense article in PDF form. Generate the podcast and play it as an intro to the topic — it engages more than slides.
Before a meeting, upload an 80-page contract and ask about the penalty clauses. Get the answer with the page cited.
Wants to understand a tax rule before talking to the accountant. Upload the official guide and ask in plain language.
From zero to your first podcast
- Go to notebooklm.google.com
Click "Sign in with Google." Any Gmail account works.
- Create a "New notebook"
Give the topic a name.
think of it as a folder for the subject - Add your sources
In the "Sources" panel, click "Add": PDF (up to 200 MB), pasted text, a website link, or a YouTube video link. On the free plan: up to 50 sources per notebook.
- Ask a question in the chat
In plain English: "What are the main risks in this document?"
the answer comes with the passage and page cited - Generate the podcast (Audio Overview)
In the "Studio" panel, pick the output language English, the "Deep Dive" format, and click Generate.
- Listen and download
Hit play, or the download icon to listen offline.
A ready-made request for the chat box
Give me an executive summary of this document in no more than 5 bullet points, in plain language and free of jargon. For each point, indicate the source page or passage. At the end, list the 3 most important questions this document still leaves unanswered.
You get 5 points with a source for each, plus 3 open questions.
Tips & common mistakes
Do this
- Upload several sources in the same notebook — it cross-references them all in its answers.
- Use the Study Guide or the Mind Map in Studio to review in a different way.
- The audio language is independent of the file: upload something in another language and listen in English.
Avoid
- Uploading a scanned PDF (a photo of text). It can't read images — check whether you can select the text.
- Expecting to chat with the hosts in every language — the interactive mode is only available in English.
- Asking about things outside the document. It replies "I couldn't find that in the sources" — that's protection, not a bug.
Try it now with a file of your own
Grab any PDF from your desktop — a contract, a booklet, an article. Upload it to NotebookLM and ask: "What is the most important piece of information in this document that I shouldn't ignore?"
It worked if you get an answer with at least one passage cited, in English, in under 15 seconds.
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