Ask about any page, right beside it
The LunaNotes side panel opens next to whatever you're reading in Chrome. Ask about the page, write notes on it, turn it into flashcards and review them, all without leaving the tab.
Add to Chrome Free to start · used by 44K+ note-takers
Open it on any page with AltShiftS. On YouTube, the YouTube sidebar takes over.
Five sections, one page
Everything in the panel is about the page in the tab you're on, with your library a click away. Pick a section on the rail; the page stays where it is.
Keep the page, or make something from it
The page in the tab you're on, and whether it's already in your library. One click saves it. One more turns it into notes, a flashcard deck or a diagram.
- It keeps working if you close the panel, and opens the result in a new tab
- What you already made opens instead, so a page is never paid for twice
- A deck made here goes straight into your reviews
Questions about the page in front of you
The LunaNotes Assistant, already holding this page. Highlight a passage first to ask about just that part. Asking doesn't save the page to your library.
- Starts you off with Summarize, Explain simply and Quiz me
- Each page keeps its own conversations, like each video does
- Answers can follow up into notes, flashcards or a diagram
A note on this page, and all your others
This page's note sits on top, with your recent notes below. They open in the same editor as the app and sync as you type.
- Writing a note on a page saves the page too, so the two stay together
- Start a blank note from any page
- Search your notes without leaving the tab
Your due cards, between readings
The flashcards due today, from every deck, ten at a time. You grade them the same way as in the app, so a few minutes on any page count.
- The rail shows how many cards are waiting
- Cards come back the day you're about to forget them
Your whole library, one search away
Notes, flashcard decks, diagrams, podcasts, meetings and saved pages. A result opens in the app in a new tab, and the panel stays beside the page.
- ⌘K jumps to a section, or searches the library for what you typed
- Each result says what it is, so a note and a page with the same title don't get mixed up
It reads the page you see, and only when you ask
To answer, Ask needs the page's text. It takes the route that gets what's on your screen, and asks for permission only when nothing else works.
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When LunaNotes may read the tab
It uses the text you are looking at
That's after you click LunaNotes on that tab, or on a site you allowed. Pages behind a login work, because the text comes from your browser.
- 2
Otherwise
Its servers open the address
Public articles, papers and PDFs read fine this way. Nothing in your browser is touched.
- 3
If neither can read it
It asks for that one site
The panel shows “Allow reading this site”. Chrome asks you to confirm, for that site only. Never every site.
What it never reads
- Pages you only visit
- Opening a page sends nothing anywhere. Whether it's already saved is checked on your device.
- Anything but the visible text
- Not the HTML, not what you type into forms. Chrome's PDF viewer is never read from the tab; PDFs are read on the server.
- A lasting copy
- Text sent for Ask expires after an hour. It is never saved as a bookmark, a copy of the page or a search index entry.
Open it before you have an account
Signed out, the panel isn't a sign-in screen. It's the real thing, and it asks for an account only at the moment one matters.
- 01
Every section is there
Look around before you decide. Notes and Review show examples of what you'd keep.
- 02
It says what the account is for
The first thing that needs one asks by name: to ask about this page, save it, make flashcards, or search your library.
- 03
Then it finishes the job
The panel stays open while you sign up in a new tab. Once you're in, what you clicked goes through.
The panel is free. The AI uses credits.
Keeping a page and studying it costs nothing. Credits go on what the AI reads and writes for you, and the panel shows the cost before you click.
Running low? The panel says so before you run out, and a bigger plan or a credit pack tops you up. See the plans
Free, on every plan
- Open the panel on any page
- Save the page to your library
- Write and edit notes
- Search your library
- Review your flashcards
Uses credits
Ask about the page
≈45–90 credits a question
Charged by what the AI actually read and wrote, on every plan. Long pages sit at the top of the range.
Notes, flashcards or a diagram from the page
≈15–45 credits each
By page length. Decks and diagrams also count towards your plan's monthly number: 5 of each on Free, 20 on Starter, no limit on Plus.
Free includes 2,000 credits a month, Starter 30,000 and Plus 120,000.
Open it from any page
Three ways in, whichever your hands are closest to. The toolbar icon still opens the Popup for saving and filing.
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From the keyboard
Press Alt Shift S on any page (Option on a Mac). Change the keys in Chrome's extension shortcuts if they clash.
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From the right-click menu
Right-click anywhere on the page. The same menu makes notes or flashcards from it, or from a link.
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From the toolbar
Signed in, click the LunaNotes icon, then the side panel button at the foot of the Popup's rail. The Popup closes and the panel opens beside the page.
- It follows your tab
- The panel is for the window, not one tab. Switch tabs, or follow a link, and it's about the new page.
- YouTube has its own sidebar
- On a video, the panel hands you to the YouTube sidebar, with timestamped notes and the transcript beside the player.
Questions about AI sidebar
What people ask before they try it.
Install the LunaNotes extension from the Chrome Web Store, then press Alt Shift S on any page, or right-click the page and choose Open LunaNotes side panel. Signed in, the toolbar Popup has a side panel button too. You can change the shortcut in Chrome's extension shortcuts.
The extension is free, and so are saving pages, writing notes, searching your library and reviewing flashcards. Asking about a page uses credits, about 45–90 a question, and so do notes, flashcards and diagrams made from a page. The Free plan includes 2,000 credits a month.
Web pages and PDFs: articles, papers, documentation, course pages. It can't work on the browser's own pages or the Chrome Web Store. On YouTube it opens the YouTube sidebar instead, which is built for videos.
Yes, when LunaNotes may read that tab: after you click LunaNotes on it, or on a site you allowed. It then uses the text you see. If it can't, the panel offers Allow reading this site, a permission for that one site that Chrome asks you to confirm.
No. Asking leaves your library alone. Saving the page, writing a note on it, or making notes, flashcards or a diagram from it keeps it in your library.
Chrome 116 or later, where the side panel is built in. The extension installs in other Chromium browsers too, but the panel only opens where the browser supports Chrome's side panel. Firefox and Safari are not supported.
No. Visiting a page sends nothing; whether it's already saved is checked on your device. Text is read only when you ask about a page or make something from it, and text sent for Ask expires after an hour. Your conversations are visible only to you.
Works even better with
AI sidebar is one part of LunaNotes. These pick up where it leaves off.
Explore what else LunaNotes does
Each one works on the same notes, so what you make in one feeds the rest.
Make it studyable
Bring it in
- Video workspace Your video library, with notes attached
- Timestamped notes Notes that jump back to the moment
- YouTube extension Notes and transcripts inside YouTube
- YouTube courses Work through a playlist in order
- Bookmarks Save any page, find it again
- Meeting notes An AI notetaker for Google Meet
- Podcasts Subscribe, listen, keep the notes
- Files PDFs, documents and images you upload