100% Free & Open Source 🎉

Turn Any Video into Blogs, Images & Videos with AI

Stop watching videos at 2x speed. Our AI detects captions and turns hours of content into concise summaries, stunning images, and short video clips in one click. No sign up. No subscription. Totally free.

Add to Chrome - It's Free View on GitHub

Works with YouTube, Udemy, Zoom & X (Twitter)

YouTube
Udemy
Zoom
X (Twitter)

How CapSummarize Works

How It Works

Get video summaries in three simple steps

1

Open any video 🎬

Navigate to YouTube, Udemy, or any supported platform.

youtube.com/watch?v=...
2

Click Summarize ✨

One click is all it takes. We redirect you to your favorite AI chat provider.

Summarize
3

Get AI Magic âš¡

Generate text summaries, create custom images, or produce short video clips instantly.

Select Provider

ChatGPT AI provider
Google Gemini AI provider
Anthropic Claude AI provider
xAI Grok AI provider

Your new video superpower 🚀

Go beyond simple transcripts. Create content in any format you need.

Smart Text Summaries

Get concise summaries, bullet points, and action items. Choose from Technical, General, or Tweet styles.

AI Image Generation

Create stunning thumbnails and images from video context. Perfect for social media posts.

Video Generation

Generate short video clips or summaries from long content. Repurpose content effortlessly.

Custom Prompts

Use your own prompts. Ask for specific details or simple explanations.

Privacy First

Your data stays on your device. We never see or store your summaries.

Unlimited & Free

Summarize as many videos as you want. No daily limits, no premium tiers. Completely free.

Multi-Platform Support

Works on YouTube, Udemy, Zoom, and X (Twitter). One extension for all your video content.

History Tracking

Never lose a summary. Access your previously captured transcripts and summaries anytime.

Multiple AI Providers

Use your favorite AI. We support ChatGPT, Claude, Gemini, Grok, Perplexity, Mistral, and Meta AI.

See it in action 📸

High-quality outputs generated directly from video context.

Got Questions? 🤔

We've got answers. Here are some of the most common things people ask.

What caption formats do you support?

We support embedded captions on YouTube, Udemy, Zoom, and X (Twitter). If the video has captions, we can summarize it.

Is my data and video history safe?

Yes. We are privacy-first. All data is stored locally on your device. The extension is open source, so you can verify this yourself on GitHub.

Is this really free? What's the catch?

Yes, CapSummarize is 100% free with no limits. The extension redirects you to your favorite AI provider (ChatGPT, Claude, Gemini, etc.) where you may have your own usage limits based on your account. The extension itself has no restrictions.

Can I contribute to the project?

Absolutely! CapSummarize is open source and we welcome contributions. Check out our GitHub repository to get started.

Which AI providers do you support?

We support ChatGPT, Claude, Gemini, Grok, Perplexity, Mistral, and Meta AI. You can choose your preferred provider for generating summaries.

How do I generate images and videos?

Image generation is supported by ChatGPT, Gemini, and Grok. Video generation is currently supported by Gemini. Simply select the appropriate output type in the extension popup.

Will this work on [some other video site]?

Currently, we only support YouTube, Udemy, Zoom, and X. We are constantly working to add more platforms. Feel free to open an issue or PR on GitHub!