機械翻訳 / Machine-translated
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What you'll learn in this article
NotebookLM is a free AI note-taking tool developed by Google.
When you upload PDFs or documents, the AI automatically reads their contents.
It then provides summaries and answers to your questions, complete with citations (references to the source material).
One of its biggest appeals is that anyone with a Google account can use it.
It can dramatically streamline document organization for research, work, and study.
As of April 2026, it can also automatically generate audio and slide videos.
Upload a long paper or report, and the AI extracts the key points.
Simply type something like "What is the conclusion of this document?" in the chat, and it will answer.
Every response includes a clearly cited source, ensuring reliability.
Two AI hosts explain your document's content in a conversational format.
You can download it as an audio file (WAV format).
It's convenient for learning by ear during your commute or while doing household chores.
This feature was added in July 2025.
It automatically generates narrated slide videos based on your documents.
Charts and figures are automatically visualized, and the feature supports over 80 languages.
It can significantly cut down the time you spend creating presentation materials.
An update in February 2026 lets you edit slides using natural language instructions.
Just say something like "Change the title color to blue," and the change is applied.
You can also download the result in PowerPoint format (PPTX).
NotebookLM supports more than 80 languages, not just Japanese.
It can also automatically create data tables and diagrams.
This makes it easy to understand overseas documents and complex data.
The basic workflow for NotebookLM is completed in just 3 steps.
Go to the official NotebookLM website.
Log in with your Google account and create a "New Notebook."
The free version allows you to create up to 100 notebooks.
Upload PDFs, text files, or links from Google Drive.
You can add up to 50 documents to a single notebook.
The AI automatically analyzes the content and organizes the key points.
Type your questions in everyday language in the chat window.
For example: "Give me a summary of this document" or "Explain [topic] in detail."
The AI will respond with citations included.
The free version allows up to 50 questions per day.
The biggest advantage is that every response always includes a cited source.
You can verify whether the AI's answer is correct by checking the original document.
Even busy people who don't have time to read lengthy documents can quickly grasp the key points.
The chat-based interface makes it easy to use even without specialized knowledge.
One-click analysis is also possible with buttons like "Create Overview."
Integrating with Google Workspace can also streamline information sharing within teams.
You need to be careful when handling documents that contain confidential information.
Since data is stored in the cloud, there is a potential security risk.
Avoid uploading highly sensitive documents such as customer information or contracts.
The smartphone app has some feature limitations compared to the browser version.
Additionally, the free version has a daily cap on the number of questions and audio generations.
NotebookLM is especially recommended for people like these:
Since it's free to use, it's well worth trying out.
NotebookLM is a free AI document organization tool provided by Google.
Here's a recap of the key points from this article:
If you find yourself spending too much time organizing documents or gathering information, give it a try.
NotebookLM is sure to make your work and studies more efficient.
This article is a cross-post from AI Friends.
