Recap AI

Recap AI for YouTube: summaries, a searchable transcript and chat about the video, in the sidebar, powered by your own OpenAI, Anthropic, Google or OpenRouter key.

Features

• Structured summary with key moments, notes, a plain-terms paragraph and a "current moment" marker that follows playback. Styles: Detailed, TL;DR and Key moments.
• Chapter bar under the header, synced to playback. Click a segment to jump. Videos without chapters get a single bar.
• Transcript that works without a key: search, follow playback, click to jump, chapter headers, copy.
• Chat with quotes from the transcript, a "Current moment" toggle, citation chips that seek the video, and per-video history.
• Starter questions generated from the summary.
• Bring your own key for OpenAI, Anthropic, Google or OpenRouter, with a model picker. The key is tested in the panel before it is saved.
• Usage counters for the month (tokens, summaries, chats).
• Auto-summarize (off by default), filler-word stripping, answer language and custom instructions.
• Text size (S, M, L) and theme (follow YouTube, dark or light).
• Export a video's summary and chat as Markdown, or all chats in one file.
• Shortcuts: Alt+Y toggle panel, Alt+C focus chat, Alt+S summarize, Alt+F search transcript. Alt+Y can be rebound at chrome://extensions/shortcuts.

Install

From a release:

1. Download the zip from the latest GitHub Release.
2. Unzip it.
3. Open chrome://extensions and turn on Developer mode.
4. Click Load unpacked and select the unzipped folder.

Or build from source, as described under Development, and load .output/chrome-mv3 the same way.

Setup

1. Open a YouTube video. The card shows "Add a key".
2. Click Add API key and pick a provider.
3. Paste your key and click Test key.
4. Click Save and continue.

Get a key here:

• OpenAI: https://platform.openai.com/api-keys
• Anthropic: https://platform.claude.com/settings/keys
• Google: https://aistudio.google.com/apikey
• OpenRouter: https://openrouter.ai/settings/keys

The transcript tab works without a key.

Privacy

• Your key is stored in chrome.storage.local on your device and sent only to the provider you pick.
• Requests go only to YouTube and the provider you chose. There is no server of ours in between.
• No analytics, no telemetry, no tracking.
• Transcripts come from YouTube's own transcript feature. It is undocumented and may change. If it breaks, the panel shows "no transcript".

Development

pnpm install
pnpm dev        # run the extension with hot reload
pnpm test       # unit tests
pnpm check      # lint and format (Biome)
pnpm typecheck
pnpm build
pnpm zip        # package into .output/
pnpm icons      # regenerate extension icons

Tech stack

• WXT for the extension framework
• React 19 and TypeScript
• Tailwind CSS v4 and shadcn/ui
• Phosphor icons
• Vercel AI SDK and Streamdown
• Biome for lint and format
• Vitest for tests

License

See LICENSE.