Copy Note to Markdown is a userscript that adds a button to copy the content of a note in markdown format in a Google NotebookLM note.

README.md

Copy Note to Markdown

Copy Note to Markdown is a userscript that adds a button to copy the content of a note in markdown format in a Google NotebookLM note.

Key Features

• Adds a button to the top right corner of the note panel. Clicking this button copies the note content as markdown to the clipboard.

Changelog

2025-11-07

• Fix Editor not found errors (@heltonteixeira)
• Disable lint checker for userscript file to avoid unnecessary warnings.

Getting Started

🔧 Installation

1. Install Tampermonkey browser extension
2. Click on the "Raw" button of the script below.
3. Visit notebooklm.google.com to see the magic! ✨

copy-note-to-markdown.user.js

/* eslint-disable */
// @ts-nocheck
// ==UserScript==
// @name         Copy Note to Markdown
// @namespace    https://github.com/volkanunsal
// @version      2025-11-07
// @description  Copies the current note content as Markdown to clipboard
// @author       Volkan Unsal
// @downloadURL  https://gist.githubusercontent.com/volkanunsal/5d67c79c3c117bc81d1301a3a5e3d18e/raw/copy-note-to-markdown.user.js
// @updateURL    https://gist.githubusercontent.com/volkanunsal/5d67c79c3c117bc81d1301a3a5e3d18e/raw/copy-note-to-markdown.user.js
// @match        https://notebooklm.google.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=google.com
// @grant        GM_addStyle

// ==/UserScript==

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    }
    button#copy-note-to-markdown-btn:active {
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    }
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I think there may have some changes in the NotebookLM page that caused the script to not work anymore, it also had some lint errors.
I have fixed it, keep the credits: https://gist.github.com/heltonteixeira/116237abb54e2b55d519056a31d5d6b4

I think there may have some changes in the NotebookLM page that caused the script to not work anymore, it also had some lint errors. I have fixed it, keep the credits: heltonteixeira/116237abb54e2b55d519056a31d5d6b4

Many thanks. I wrote the original in Typescript, so I'm going to copy your changes to the onMount hook to the original and compile it again. The lint errors are probably happening because of the minification. I'll add a comment to disable lint checker in Tampermonkey output. Thanks again.

After some more testing, I noticed that there are still some issues, I was trying to work it out but didn't have much lucky.

I think I figured out some of the issues, I think the only selectors that were working for content were labs-tailwind-doc-viewer and ql-editor, I could not find any others.
I have updated my version, and also improved the markdown formatting.