Subtitle search & AI chat for YouTube.
Instantly search any line in a video’s subtitles and jump to that moment. Upgrade once (lifetime access) to unlock LLM-powered search and chat about the video using your own API key.
How SubSoar works
SubSoar lives in your Chrome toolbar. Open a YouTube video, click the icon, and the extension quietly pulls the subtitles and builds a fast local index.
Search like a document
Type a phrase and SubSoar highlights every matching subtitle segment. Under the hood it supports exact, partial, and fuzzy-style matching.
Jump to the moment
Every result includes a timestamp. Click once and YouTube jumps to that line and resumes playback, so you can rewatch or clip it instantly.
Chat with an AI about the video
With Pro, SubSoar sends the transcript to your chosen LLM so you can ask questions like “summarise the guest’s main argument” or “where do they mention X?” and jump right to those parts.
Bring your own key
Plug in your own API key (OpenAI or another provider). Calls go directly from your browser to the LLM; we don’t proxy or store prompts.
Free where it should be. Simple when it isn’t.
Subtitle search is free forever. No account, no login. You can install the extension, search, and bounce between key moments with zero setup.
When you’re ready for LLM-powered discovery and chat, upgrade once to Pro and keep it for the lifetime of the product.
- AI chat about any YouTube video you open
- Bring your own API key (BYOK)
- No recurring fees. Lifetime updates.
Install in under a minute.
SubSoar is a Chrome extension. Once installed, it’s always one click away while you watch YouTube.
1 · Add the extension
Install from the Chrome Web Store or load the extension locally during development. SubSoar appears as an icon in your toolbar.
2 · Pin it
Pin SubSoar so it’s available on every YouTube tab. Open a video and click the icon to open the search panel.
3 · (Optional) Unlock Pro
Open settings, purchase Pro via Stripe, and paste your API key. From there, AI search and chat are just another tab in the extension.
Privacy-first by design.
Free subtitle search runs entirely in your browser. SubSoar indexes subtitles locally and doesn’t upload them to our servers.
For Pro, your LLM API key is stored only in the extension and used directly from your browser to call your provider. We don’t see or log your prompts.
Do you store my video history?
No. We don’t keep a log of which videos you watch or which timestamps you jump to. Local caches stay in your browser and can be cleared any time.
How does Stripe fit in?
Payments are handled entirely by Stripe. We never see your card details. We only keep a minimal record that your Pro license is active so the extension can unlock features.