Free YouTube tools by LunaNotes
Four small tools that each do one thing to a YouTube video: summarise it, chapter it, fact-check it, or hand you its subtitles. All free, all usable without an account, and all built on LunaNotes — an AI note-taking app for turning anything you're learning from into notes, diagrams and flashcards.
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Transcript & summary
Paste a video link and get the full transcript plus a structured AI summary — headings, key points and takeaways instead of a wall of text.
Students, researchers and anyone triaging a two-hour talk.
Open the tool -
Timestamps & chapters
Break a video into chapters with clickable timestamps and a short description of what happens in each one.
Creators writing chapter markers, and anyone skimming a long video.
Open the tool -
Fact checker
Pull the factual claims out of a video, check each one, and get a 0–100 credibility score with the reasoning shown.
Journalists, researchers and sceptical viewers.
Open the tool -
Subtitle downloader
Download a video's captions as SRT, VTT or plain text — the timed subtitle file, ready to edit or re-use.
Video editors, translators and language learners.
Open the tool
The tools are a sample. LunaNotes is the product.
Each tool runs one step of LunaNotes on its own, so you can judge the output before signing up. Inside the app you bring the source — a video, a PDF, an audio file, a meeting, or your own writing — and keep working with what comes out.
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Notes you can actually edit
Every source becomes a structured, editable note — headings, hierarchy, your own additions — not a read-only block of AI text.
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Diagrams from your notes
Concept maps, flowcharts and mind maps generated from a note you've already read, so the structure is yours.
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Flashcards for revision
Spaced-review decks built from your own material, so studying starts from something you've processed.
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Chat across everything
Ask questions against your notes — one video, a semester's worth of them, or the PDFs and meetings alongside.
Free plan: 100 AI credits a month, 5 diagrams, 5 flashcard decks. No credit card.
Common questions
- Are these tools really free?
- Yes. Paste a link, get a result, share it. There's no paywall on this page and no credit card anywhere in the flow.
- Do I need an account?
- Not to use the tools. An account is what you want if you'd like to keep the result, edit it, and turn it into diagrams or flashcards.
- What is LunaNotes?
- An AI note-taking app. You bring a source and it produces a structured, editable note, plus diagrams, flashcards and an AI chat built from it. YouTube is one of the places a source can come from, not the whole product.
- Where do the results live?
- Each run gets its own public page with a shareable URL. To keep a private, editable copy, open the same source in a free LunaNotes account.
Looking for something to start a note from instead? Browse the note templates.
Let's Try!