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BoxCast
Chrome extension for AI video walkthroughs
In Development
Chrome Extension (WXT)React 19Claude VisionElevenLabs TTS
The Problem
Creating video walkthroughs of software is tedious. Screen recording, scripting narration, editing. It takes hours for a 2-minute video.
The Solution
Chrome extension. Draw boxes on any webpage. AI describes each region. Generates a narrated MP4 video walkthrough with zoom, pan, highlights, and captions. Any language.
Architecture Flow
Extension captures
boxes drawn
AI describes
TTS generates voiceover
Remotion renders video
MP4 download
Key Innovation
Combining vision AI + TTS + programmatic video rendering into a one-click workflow
💡 Growth Strategy
“Free tier with watermark creates viral loop, every video is an ad”
Visuals
Built With
Chrome Extension (WXT)
Foundation
React 19
Primary language
Claude Vision
Key dependency
ElevenLabs TTS
Key dependency
Remotion 4
Key dependency
Cloudflare R2
Key dependency
Current Status
In Development
What's Next?
Currently wrapping up core features for the initial v1 launch. Next priority is user onboarding refinement.
