YT Scan

YT Scan is a Chrome extension that answers questions about the YouTube video you are watching. It pulls the transcript automatically, indexes it, and answers from the retrieved passages rather than from the model’s memory.

Chunking and retrieval are tuned to keep answers grounded and latency low, with Groq serving Llama 3.1 8B behind a FastAPI backend.

What it does

• Automatic transcript extraction for any video with captions
• RAG retrieval so answers stay grounded in what was actually said
• Chat-style panel that sits beside the video
• Llama 3.1 8B on Groq for near-instant responses
• API keys stored locally and never shipped anywhere else

Built with