TubeCaps for YouTube

Name: TubeCaps for YouTube
Author: LunacyDev

Lunacy subtitle assistant for YouTube with multi-provider model support.

As of June 2026, TubeCaps for YouTube has — users in the Productivity category.

LunacyDev Productivity

Chrome Web Store ↗.crx

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Rating0%

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Version

1.1.0

Manifest V3

90-day change · In the last 90 days this extension 1 version update.

History

1 snapshots

Tracking since Apr 19, 2026.

Not enough history yet for this metric — the chart fills in as we collect more snapshots.

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Date	Users	Rating	Reviews	Version
Apr 19, 2026	—	—	—	1.0.0
Now	—	—	—	1.1.0

Changelog

Apr 19, 2026

description

TubeCaps is the ultimate AI-powered companion for YouTube creators, marketers, and power users. Leverage cutting-edge AI to deconstruct any YouTube video script, uncover high-performing content patterns, and accelerate your channel growth.
🚀 Key Features:
- 📝 Smart Transcripts: Instant access to video scripts with intelligent segmenting for better readability.
- 🧠 Script Diagnosis: Deep AI analysis of visual imagery, curiosity gaps, pacing, and storytelling structure.
- 💡 Actionable Insights: Learn the transferable strategies used by top creators and apply them to your own content.
- 💬 AI Chat Assistant: Chat directly with the script to brainstorm rewrites, generate video ideas, or summarize complex topics.
- 🌍 Multi-Model Support: Seamlessly connect your own API keys from OpenAI, Gemini, Claude, DeepSeek, and more.
- 🔒 Privacy-First: Your API keys and data are stored locally on your device. We never see your keys.
-🌍 Global Support: Fully localized in English, Chinese (Simplified & Traditional), Japanese, Korean, French, German, Spanish, and Portuguese.

Whether you're a creator looking to master the craft of storytelling or a viewer wanting to extract the maximum value from every video, TubeCaps provides the insights you need to succeed.
Get started for free and level up your YouTube experience today!

TubeCaps helps you get more value from any YouTube video. Turn videos into readable transcripts, AI-powered script analysis, and practical takeaways you can reuse in your own work.

Why install TubeCaps:

- Smart Transcripts: Read clean, well-structured video transcripts with better segmentation.
- Script Diagnosis: Analyze hooks, curiosity gaps, pacing, visual storytelling, and structure.
- Actionable Takeaways: Learn what makes top-performing videos work and apply those patterns to your own content.
- AI Chat Assistant: Ask questions, brainstorm rewrites, generate ideas, or summarize long videos in seconds.
- Bring Your Own Models: Connect your own API keys from OpenAI, Gemini, Claude, DeepSeek, and more.
- Privacy-First: Your API keys and data stay on your device. We never see your keys.
- Global Support: Available in English, Chinese (Simplified and Traditional), Japanese, Korean, French, German, Spanish, and Portuguese.

Whether you're a creator, marketer, researcher, or power viewer, TubeCaps gives you a faster way to study what works on YouTube.
Install TubeCaps and make every video more useful.

Permissions & access

Permissions: activeTabscriptingstoragefontSettings
Host access: *://*.youtube.com/*, *://api.lunacydev.com/*

Screenshots

About

TubeCaps helps you get more value from any YouTube video. Turn videos into readable transcripts, AI-powered script analysis, and practical takeaways you can reuse in your own work.

Why install TubeCaps:

- Smart Transcripts: Read clean, well-structured video transcripts with better segmentation.
- Script Diagnosis: Analyze hooks, curiosity gaps, pacing, visual storytelling, and structure.
- Actionable Takeaways: Learn what makes top-performing videos work and apply those patterns to your own content.
- AI Chat Assistant: Ask questions, brainstorm rewrites, generate ideas, or summarize long videos in seconds.
- Bring Your Own Models: Connect your own API keys from OpenAI, Gemini, Claude, DeepSeek, and more.
- Privacy-First: Your API keys and data stay on your device. We never see your keys.
- Global Support: Available in English, Chinese (Simplified and Traditional), Japanese, Korean, French, German, Spanish, and Portuguese.

Whether you're a creator, marketer, researcher, or power viewer, TubeCaps gives you a faster way to study what works on YouTube.
Install TubeCaps and make every video more useful.