Capture anything you read or watch
A free browser extension. Save any page into a collection in two clicks, and take timestamped notes beside a YouTube video without leaving it. Everything lands in your LunaNotes library.
Add to Chrome · it's free 4.0 67 ratings 8,000 users on the Chrome Web Store
LunaNotesNotesTranscriptChatAI
12:04
04:41
New note
Save page SearchResearch + tag
Save bookmark
Try it before you sign up for anything
Install it, open a video, and run the AI tools straight away — 3 times, with no account. You only need one when you want to keep what comes back.
-
Summary
Key points distilled into clean notes.
-
Chapters
A timestamped breakdown of the video.
-
Fact Check
Claims verified with a credibility score, surfaced as the video plays.
These four tools — Subtitles is the fourth — never use credits, however often you run them, account or not.
On YouTube, it sits beside the player
Open a video and the sidebar docks to the right of it. Write a note and it is pinned to the second you wrote it, then plotted on a timeline under the player so you can see what you noted and where.
3
8 Ask AI tools New note12:04
lecture
Every note remembers its moment
A note takes the playback position it was written at, and that is where its marker sits on the timeline. Click the marker weeks later and the video jumps back to it.
The video waits for you
Start writing and playback pauses, so the thirty seconds you spend on a note are not thirty seconds you have to rewind.
The transcript is right there
Search it for the term you half-remember, click the line, and the video seeks to it. No scrubbing.
Everywhere else, it saves the page
Click the icon on anything worth keeping and it goes into your library — filed, tagged and searchable, not dropped into an undifferentiated pile of browser bookmarks.
- File it into a collection as you save it — and create the collection right there if it does not exist yet
- Tag it, so you can find it by topic and not only by name
- Search everything you have saved without opening the app
- Right-click a link to save it without opening it first
Save page Personal Collection
Rese
Reading list
Research
Create “Research 2026”
neuroscience + tag
Save bookmark
SearchAll collections Unsorted
Research Today
Reading list Yesterday
Unsorted 3 days ago
Ask the video what you missed
The sidebar's chat is the same Assistant you use in the app, handed the video you are watching. It opens with questions written from that video's transcript, so a conversation about it starts in one tap.
Assistant Recent chatsSummarize the key takeawaysExplain the main concept simplyMake flashcards from this
Summarize the key takeaways
12:04
Ask about this video…
A conversation you start on YouTube is a real thread. Close the tab and it is waiting in your chat history in the app, alongside every other one.
Everything it catches lands in one library
The extension is a way in, not a place to keep things. A page you saved and a note you took on a lecture end up in the same library, and the app treats them the same: something to turn into a diagram, a deck of flashcards, or an answer.
- Saved pages
- Video notes
- Threads
Your library- Diagrams
- Flashcards
- Search across it all
Used daily by people with something to learn
- people taking notes
- 44K+ people taking notes
- notes written
- 170K+ notes written
- videos turned into notes
- 100K+ videos turned into notes
I am amazed by experiencing it. It is so helpfull for my office work as well as personal work.
It simple, easy to use and effective.
Permite tomar notas mientras se ve un vídeo en YouTube y las vincula al momento exacto del vídeo. También permite hacer una captura de pantalla con anotaciones durante el vídeo. ¡MUY RECOMENDADA!
Love it, simple to use and easy. It auto pauses the video when I start typing, which is cool.
I love this :) Please don't add too much complicated stuff that clutters the note section, I want it to be simple as is.
Excelente!
Simple awesome. Nothing can be simpler then this and works beautifully. I appreciate the idea and the team who coded this. Amazing
The best extension in webstore. So many functions available here You can customize your notes with powerful and easy-to-use editor.
I am amazed by experiencing it. It is so helpfull for my office work as well as personal work.
It simple, easy to use and effective.
Permite tomar notas mientras se ve un vídeo en YouTube y las vincula al momento exacto del vídeo. También permite hacer una captura de pantalla con anotaciones durante el vídeo. ¡MUY RECOMENDADA!
Love it, simple to use and easy. It auto pauses the video when I start typing, which is cool.
I love this :) Please don't add too much complicated stuff that clutters the note section, I want it to be simple as is.
Excelente!
Simple awesome. Nothing can be simpler then this and works beautifully. I appreciate the idea and the team who coded this. Amazing
The best extension in webstore. So many functions available here You can customize your notes with powerful and easy-to-use editor.
I am amazed by experiencing it. It is so helpfull for my office work as well as personal work.
It simple, easy to use and effective.
Permite tomar notas mientras se ve un vídeo en YouTube y las vincula al momento exacto del vídeo. También permite hacer una captura de pantalla con anotaciones durante el vídeo. ¡MUY RECOMENDADA!
Love it, simple to use and easy. It auto pauses the video when I start typing, which is cool.
I love this :) Please don't add too much complicated stuff that clutters the note section, I want it to be simple as is.
Excelente!
Simple awesome. Nothing can be simpler then this and works beautifully. I appreciate the idea and the team who coded this. Amazing
The best extension in webstore. So many functions available here You can customize your notes with powerful and easy-to-use editor.
I am amazed by experiencing it. It is so helpfull for my office work as well as personal work.
It simple, easy to use and effective.
Permite tomar notas mientras se ve un vídeo en YouTube y las vincula al momento exacto del vídeo. También permite hacer una captura de pantalla con anotaciones durante el vídeo. ¡MUY RECOMENDADA!
Love it, simple to use and easy. It auto pauses the video when I start typing, which is cool.
I love this :) Please don't add too much complicated stuff that clutters the note section, I want it to be simple as is.
Excelente!
Simple awesome. Nothing can be simpler then this and works beautifully. I appreciate the idea and the team who coded this. Amazing
The best extension in webstore. So many functions available here You can customize your notes with powerful and easy-to-use editor.
Perfecta para agregar muchas notas en cada vídeo y saber en que tiempo del vídeo se creo la nota
Great great extension for learning and taking notes on u2bee!
Very useful tool. I'm using it for the last couple weeks and I'm loving it so far. Makes learning on YouTube a great experience.
Super eficiente me encantó <3
Muy buena para tomar notas a la par de tutoriales de código.
This extension works pretty well 10/10
Me sirve mucho cuando estoy estudiando con videos de youtube, para destacar momentos importantes de los videos que miro. Es una app muy útil y recomendable.
Perfecta para agregar muchas notas en cada vídeo y saber en que tiempo del vídeo se creo la nota
Great great extension for learning and taking notes on u2bee!
Very useful tool. I'm using it for the last couple weeks and I'm loving it so far. Makes learning on YouTube a great experience.
Super eficiente me encantó <3
Muy buena para tomar notas a la par de tutoriales de código.
This extension works pretty well 10/10
Me sirve mucho cuando estoy estudiando con videos de youtube, para destacar momentos importantes de los videos que miro. Es una app muy útil y recomendable.
Perfecta para agregar muchas notas en cada vídeo y saber en que tiempo del vídeo se creo la nota
Great great extension for learning and taking notes on u2bee!
Very useful tool. I'm using it for the last couple weeks and I'm loving it so far. Makes learning on YouTube a great experience.
Super eficiente me encantó <3
Muy buena para tomar notas a la par de tutoriales de código.
This extension works pretty well 10/10
Me sirve mucho cuando estoy estudiando con videos de youtube, para destacar momentos importantes de los videos que miro. Es una app muy útil y recomendable.
Perfecta para agregar muchas notas en cada vídeo y saber en que tiempo del vídeo se creo la nota
Great great extension for learning and taking notes on u2bee!
Very useful tool. I'm using it for the last couple weeks and I'm loving it so far. Makes learning on YouTube a great experience.
Super eficiente me encantó <3
Muy buena para tomar notas a la par de tutoriales de código.
This extension works pretty well 10/10
Me sirve mucho cuando estoy estudiando con videos de youtube, para destacar momentos importantes de los videos que miro. Es una app muy útil y recomendable.
Reviews from the LunaNotes listing on the Chrome Web Store.
It asks for very little
Most extensions want permission to read every page you open. This one does not, and the difference is worth spelling out.
It sees a page when you ask it to
Clicking the icon hands the extension that tab's address and title. It has no standing access to the pages you browse, and it never reads their contents.
The mark is checked on your machine
The icon can tell you a page is already saved because your saved addresses are kept locally and compared there. Pages you merely visit are never sent anywhere.
Saving is the moment something leaves
When you choose to save a page, its address goes to our servers so the title, icon and description can be fetched. That is the one thing that travels, and only because you asked for it.
Installs from the Chrome Web Store, into any Chromium browser
- Chrome
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Edge
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Opera
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Vivaldi
Firefox and Safari are not supported.
Before you install it
Two things. Click the toolbar icon on any page and it saves that page as a bookmark, filed in a collection and tagged. Open a YouTube video and a sidebar appears beside the player for timestamped notes, the transcript, AI summaries, and questions about what you are watching. Everything you capture lands in your LunaNotes library.
Not to try it. After installing you can run the Summary, Chapters and Fact Check tools on a YouTube video three times without signing in. Saving notes and bookmarks needs a free account, because they have to live in a library that is yours.
The extension is free, and the video tools — Summary, Chapters, Fact Check and Subtitles — never use credits, however often you run them. The Assistant uses your LunaNotes credits, and the free plan includes 100 a month. See the plans →
Chrome, and every Chromium browser that installs from the Chrome Web Store: Edge, Brave, Opera, Arc and Vivaldi. Firefox and Safari are not supported.
When you click the toolbar icon, it receives the current tab's URL and title, and nothing else — it never reads the content of the pages you visit. The metadata for a saved bookmark is fetched on our servers from the URL you chose to save. The mark that tells you a page is already saved is checked against a list held on your own machine, so pages you merely visit are never sent anywhere.
The same AI tools run on this site, in the browser, with no extension and no account. You lose the notes, the bookmarks and the sidebar, but the summaries and fact checks are the same ones. Use the free web tools →
Everything else it does
The rest of it, grouped by where it works.
On YouTube
- Pause on new note
- The video stops the moment you start writing, so you never lose the next thirty seconds.
- Frame screenshot
- Drop the frame you are looking at straight into the note.
- Timestamps mid-note
- Insert the current playback position anywhere in the body, not just at the top.
- Searchable transcript
- Find the moment a term was said, then click the line to jump there.
- Clustered markers
- Notes taken close together collapse into one marker and fan out on hover.
- Subtitle download
- Pull the video's subtitles out as an SRT file.
- Diagrams and flashcards
- Send the video straight into the app as a concept map or a deck.
- Library view
- Search and open any note in your library without leaving YouTube.
- Resizable panel
- Drag the sidebar wider when you are writing, narrower when you are watching.
On every other page
- Right-click to save
- Save the page, or a link on it, without opening it first.
- Already-saved mark
- The toolbar icon tells you when this page is already in your library.
- Collections on the way in
- File a bookmark as you save it, and make the collection right there if it does not exist.
- Bookmark search
- Search everything you have saved, filtered by collection or by what is still unsorted.
- Offline queue
- Saves made without a connection are held and retried, so nothing is dropped.
Wherever you are
- Workspaces
- Choose which library a capture lands in, including one you share with a team.
- Tags
- Tag notes and bookmarks as you make them, and create new tags inline.
- Templates
- Start a note from one of your own templates instead of a blank page.
- Favourites
- Star the notes you come back to and filter down to just those.
- Slash commands
- Type / in the editor for headings, lists, and the rest of the block menu.
- AI editing on a selection
- Select a passage and have the Assistant rewrite it, with the change shown as a diff you accept or reject.
- Live sync
- Edits sync as you type and show who else is reading, the same as in the app.
- Trash, with undo
- A deleted note goes to the trash and can be brought straight back.
- Light, dark, or system
- The panel follows whichever you prefer.
- English and Español
- The whole interface, in either language.
Put it where you already read and watch