Frequently Asked Questions
Short answers to common questions about Kortex, a Chrome extension that adds memory and AI tools to Gemini Notebook (formerly NotebookLM). Find out how to export, save AI chats, and what the free and Pro plans include.
What is Kortex?
Kortex is a Chrome extension for Gemini Notebook (formerly NotebookLM). It is free to start. It saves AI chats from ChatGPT, Claude, Gemini and Perplexity, web pages and social posts into your notebooks. It organizes them with collections, tags and search across every notebook. It also runs automation rules, exports to PDF, Markdown, text and ZIP, and turns your Audio Overviews into a private podcast feed. With Kortex MCP (a standard way to connect AI apps to tools), AI assistants can work inside your notebooks. Some of these features come with Pro.
Is Kortex made by Google?
No. Kortex is an independent Chrome extension, not affiliated with or endorsed by Google. It works inside Gemini Notebook, the Google research tool that was called NotebookLM until July 16, 2026. It adds import, organization, export and MCP features that Google does not offer.
Does Kortex work now that NotebookLM is called Gemini Notebook?
Yes. Google renamed NotebookLM to Gemini Notebook on July 16, 2026. It is the same product with the same notebooks, and Kortex works in it as before. Everything on this site about Gemini Notebook also applies to what you may still call NotebookLM.
Is Kortex free?
Yes. The free plan includes 10 imports and 10 exports a day, sending highlights from any page, search across every notebook and source, and 10 saved prompts. Pro removes the daily limits. It adds sync across devices, bulk import, automations, templates, the podcast feed and Kortex MCP. Pro costs $9.99 a month, $108 a year, or $199 once for Lifetime.
Do I need to sign in?
Yes. Signing in lets Kortex track your usage, check your subscription, unlock premium features, and sync your saved prompts and views across devices.
Which browsers does Kortex work in?
Kortex works in Google Chrome, Microsoft Edge, Brave and other Chromium-based browsers. Firefox support is coming soon.
What formats can I export to?
You can export to PDF (formatted documents), Markdown (keeps your headings and structure), Text (plain text), and ZIP (one compressed file with many files inside).
Do exports count against my limit if they fail?
No. Failed exports do not count against your daily limit. Only successful exports count.
Can AI assistants work in my Gemini Notebook notebooks?
Yes, with Kortex MCP, which comes with Pro and Lifetime. MCP is a standard way to connect AI apps to tools. Connect Claude, ChatGPT, Cursor, Codex or another app that supports MCP. The assistant can then read your sources, ask questions about them, and import, organize and generate inside your notebooks. It works through the Kortex Chrome extension. The MCP quickstart in the docs shows how to set it up.
What is the Prompt Holder?
The Prompt Holder lets you save and organize your Gemini Notebook prompts. You can create folders, add tags and open saved prompts fast. The Basic plan includes 10 saved prompts in total. Pro has unlimited slots.
What are Source Views?
Source Views let you make custom filters for the sources in a notebook. Filter by type (PDFs, Google Docs, Web, Text, YouTube) and search by name. Basic includes 5 source views per day. Pro has unlimited.
What is Sync All Google Docs?
Sync All Google Docs is a Pro-only feature. With one click, it updates every Google Doc source in a notebook, so your sources in Gemini Notebook are always up to date.
Can I export chat conversations?
Yes. You can export your Gemini Notebook chats as Markdown, Text, PDF or JSON. Chat exports count against your daily export limit (10 per day on the free Basic plan, unlimited on Pro). Copying to the clipboard is free and unlimited on every plan.
What is Highlight & Snipe?
Highlight & Snipe saves highlighted text from any webpage to Gemini Notebook. Select text on any webpage, right-click, and choose "Send highlight to Gemini Notebook". Snippets do not count against your export limit.
Can I delete sources from my notebooks?
Yes. Use the delete button in the source panel header to delete sources from Gemini Notebook. This is for Pro users only.
How do I upgrade?
Click the extension icon, click "Upgrade", pick your plan (Pro monthly, yearly or lifetime), and pay. You get access right away.
What does Pro Lifetime include?
You pay $199 once, and Pro never renews. You get everything in Pro, plus every future update to the extension, 2,000 podcast minutes (double Pro; more cost $10 per 500), priority for new product releases, and unlimited Kortex MCP with fair use. Lifetime lasts as long as Kortex is maintained and works with Gemini Notebook. It has the same 7-day money-back guarantee.
What happens if I cancel?
Your subscription stays active until the end of your billing period. Then you go back to the Basic plan. Prepaid credits stay in your account and never expire.
Are there refunds?
Yes. Pro has a 7-day money-back guarantee. If it isn't right for you, email kortexnotebooklm@gmail.com within 7 days of your first payment and we will refund it in full. You can also cancel anytime, and you won't be charged again.
Where does the chat Library keep my chats?
In a database inside Chrome on your computer. Chats, videos, highlights, pins, notes and Memory facts stay there, and search runs there too. Chat text leaves only when you send it, for example to another AI, a notebook, Notion or your own assistant over MCP. The Library's Privacy view lists each send. Kortex's data collection is a separate setting, described in the privacy policy. You can turn it off under Options in the side panel's ⋯ menu.
Does Kortex save my AI chats without asking?
No. It asks once: Keep your AI chats in your Library? Until you answer, nothing is saved. To change your answer later, open the Chats tab in the side panel and its Saving your chats sheet. Save my AI chats on this computer turns saving on or off. Each site also has its own switch.
How do I delete chats from the Library?
Delete saved … chats in Saving your chats removes one site's chats from the Library. Delete from Library in a chat's ⋯ menu removes one chat and everything made from it. Neither touches the chats on the AI site. A chat you delete on its site stays in your Library until you delete it here.
Why are some of my chats missing from the Library?
New chats save while Chrome is open and you're signed in to the site. Perplexity saves only while a Perplexity tab is open. Each site's row in Saving your chats says what saving is doing, and its switch may be paused. Kortex reads each site's newest 500 chats, and Gemini lists only about its newest 500 to 600. For older chats, open ⋯ on All chats and choose Add older chats from export files.
How can I see what left my computer?
Open the Library's Privacy view. Sent from this computer lists each time Kortex sent chat text anywhere: when, where to, which chats and how many characters. The text itself isn't kept. The list keeps the last 90 days, up to 2,000 entries.
Is my data secure?
Yes. You sign in with Google through OAuth (a standard, secure sign-in), and Kortex never sees or stores your Google password or cookies. On the free plan your prompts, tags and notes stay on your computer. On Pro they are backed up to Firebase, so they sync across your computers. Saved AI chats in the chat Library stay on your computer on every plan. Usage data is only used to improve Kortex, and you can opt out at any time.
My account status isn't updating after payment. What do I do?
After you pay, click the extension icon and sign out, then sign back in. This refreshes your subscription status. If it still does not update, contact support at kortexnotebooklm@gmail.com.
Does Kortex work offline?
No. Kortex needs an internet connection to sign you in, check your subscription and get source data. Once data is loaded, some features, like copying chats to the clipboard, can work offline.
What are the free plan limits?
On the free Basic plan: 10 exports per day, 10 imports per day, 5 source views per day, and 10 saved prompts in total. Exports, imports and source views reset every day. Saved prompts are a total cap, not a daily one, so you can delete old prompts to free up slots. Pro removes all of these limits.
When do my limits reset?
Export, import and source view limits reset every day. Saved prompts are a total cap, so they do not reset. Failed exports never count against your limit. Only successful ones do.
Are there any other limits I should know about?
No hidden ones. The only free plan limits are exports, imports, source views and saved prompts. On Pro, everything is unlimited except podcast audio minutes, which come with a 1,000 minute allowance and can be topped up. There are no caps on notebooks, folders, tags, notes, highlights or file sizes on any plan.
Do podcast minutes renew each month?
No. The 1,000 podcast audio minutes in Pro are a one-time allowance, not a monthly refill. They are tied to the audio you currently host. If you remove a podcast from the feed, its minutes go back to your balance. If you need more, extra minutes cost $10 per 500 LIFETIME minutes.
Can I buy more podcast minutes, and what do they cost?
Yes. Extra podcast minutes cost $10 per 500 LIFETIME minutes, and you can buy them at any time. You can also free up minutes at no cost by deleting podcasts you no longer need. Their minutes go back to your balance.
What are you working on next?
Our public roadmap at kortex-notebooklm.com/roadmap shows what we are building next. The changelog at kortex-notebooklm.com/changelog lists everything we have shipped. Feature requests go straight to the people who build Kortex: email kortexnotebooklm@gmail.com.
How often is Kortex updated?
We ship often, usually in response to user reports, not on a fixed schedule. The Chrome Web Store listing shows the date of the latest update. Our changelog at kortex-notebooklm.com/changelog lists what shipped each month. The roadmap at kortex-notebooklm.com/roadmap shows what is next.
Who makes Kortex?
Kortex is a small independent project. It is built and maintained by people who use it every day for their own research. You can read more on our About page, and you can reach us any time at kortexnotebooklm@gmail.com.