Summarize Any YouTube Video.In 30 Seconds Flat.Free & Open Source.

Self-host Synop in 2 minutes and summarize hour-long videos in 30 seconds — using your own free Gemini or Groq API key.

No monthly subscription · Free API tiers available · MIT Licensed · No telemetry

1

Clone the repo

git clone + npm install — 30 seconds.

2

Add your free API key

Gemini or Groq — both have generous free tiers.

3

Summarize any video

Paste a URL, get structured notes in 30s.

That's it. No Docker, no database setup, no credit card.

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Do I need to be a developer?

If you can run npm install, you can run Synop. Takes 2 minutes.

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Is the API key really free?

Yes. Gemini and Groq both have free tiers generous enough for daily personal use.

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What if I don't want to self-host?

Join the cloud waitlist — no setup, no API key needed.

Star us on GitHub MIT Licensed Open Source Featured on Reddit

One tool that replaces Otter.ai, Eightify, and your notes app

All running entirely on your machine. Free and open source.

Multi-Page Notes

Get highly structured, exhaustive handwritten notes covering every single minute, quote, and action item of the video.

Chat with the AI

Have a conversation directly with the video's transcript. Ask specific questions and get precise, timestamped answers instantly.

Marketing Assets

Instantly repurpose any video into ready-to-publish SEO blog posts, Twitter threads, and LinkedIn posts with one click.

Viral Clips Generator

Automatically identify the most engaging and controversial moments with exact timestamps for easy Shorts and Reels creation.

Global Languages

Summarize and chat with videos in over 12 languages. Break down language barriers and consume global content effortlessly.

Local-First Privacy

Your library, your rules. All folders, histories, and summaries are stored securely in your own local SQLite database.

Don't wait — start today

The cloud version isn't ready yet. But you can summarize your first video in under 2 minutes right now with the self-hosted version.

Two ways to use Synop

Self-host today for free, or join the waitlist for a managed cloud version.

Available Now

Self-Host

Free Forever

  • Bring your own Gemini or Groq API key (both have generous free tiers)
  • Pay fractions of a cent per video, or $0 on free tiers
  • Your data never leaves your machine
  • MIT Licensed — fork it, modify it, own it
Get Started on GitHub
Coming Soon

Synop Cloud

No Setup

  • No API key needed
  • Access from any device
  • Dashboard, sync, and team features
  • Currently on waitlist

47 people already on the waitlist

Join Waitlist ⚡

Start for free today

Clone the repo, add your API key, and summarize your first video in under 2 minutes.

Start on GitHub

Want a managed version? → Join Cloud Waitlist