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Installation

Kortex is a Chrome extension that adds tools to Gemini Notebook (formerly NotebookLM). To install it, open its Chrome Web Store page, click Add to Chrome, then pin the icon and sign in. It takes about a minute.

After installing, the side panel shows one button: Sign in on the web

Why you'd read this​

An extension is like an app for your browser. Once it is installed, it adds new buttons to the sites you visit.

How to install Kortex​

  1. Open the Kortex page on the Chrome Web Store.
  2. Click the blue Add to Chrome button.
  3. A box asks you to confirm. Click Add extension.
  4. A welcome page opens. Kortex is now installed.

How to pin the icon​

Pinning keeps the Kortex icon in your toolbar, so it is always one click away.

  1. Click the puzzle piece at the right of the address bar. This is the Extensions button.
  2. Find Kortex in the list.
  3. Click the pin next to it. The Kortex icon now stays in the toolbar.

Using Edge, Brave or Arc? They have the same menu under their extensions button. If Kortex is missing, open chrome://extensions and check it is switched on.

How to sign in​

  1. Click the Kortex icon. The side panel opens.
  2. Click Sign in on the web. A Kortex page opens in a new tab.
  3. Sign in there. When you are done, go back to your page.

What do I see first?​

After you sign in, the side panel shows the page you are on, with a list of your notebooks below it. Open Gemini Notebook (formerly NotebookLM) at notebooklm.google.com and you will see a Kortex bar across the top of each notebook.

The Kortex bar across a notebook in Gemini Notebook
Good to know
  • If Gemini Notebook was already open, reload that tab so Kortex can add its buttons.
  • Kortex works in Chrome. It also works in other Chromium browsers such as Edge and Brave.
  • Kortex never asks for your Google password.

What if something goes wrong?​

No icon, no buttons, or the panel will not sign you in? See Support.