YouTube AI Summarizer

Open-source Chrome extension on the Chrome Web Store: AI summaries, key points, deep analysis, a two-host AI podcast (Gemini TTS) and transcript-grounded chat for any YouTube video, using Groq or Ollama Cloud with the user’s own key.

Published on the Chrome Web Store · 20+ languages · Bring-your-own-key, no subscription

Problem

Long videos are slow to scan, and generic chatbots answer questions about a video from memory instead of from what was actually said.

Approach

• Extracts YouTube captions and runs a single efficient LLM call for summary, key points and deep analysis.
• Answers follow-up questions strictly from the transcript context (transcript-grounded chat).
• Supports Groq and Ollama Cloud with model selection; API keys stay in the browser.
• Monitors InnerTube clients and transcript health with GitHub Actions.

Outcome

• Live on the Chrome Web Store
• Open source with CI/CD

Stack

JavaScript · Chrome Manifest V3 · Groq · Ollama Cloud · Gemini TTS · GitHub Actions

Links

• Source code on GitHub
• Live demo

Related skills

• RAG & Grounded LLM Systems
• Agentic & LLM Automation

Work together

Open to AI engineering roles in Dublin, across Ireland and remote, and to freelance projects. Get in touch.