Tune in to any language,
write it down in yours.
Open a YouTube tab in Japanese, a meeting in English, a Spanish podcast. In three seconds the wireless picks up the signal and writes it down on your page — bilingual. Hover any word for a margin note. Click a sentence to save it as a flashcard for tomorrow.
Today'spage
session_2026-05-17_0936
Right, so the third quarter numbers came in stronger than projected — the team's already drafting a follow-up campaign.
Right, so the third quarter numbers came in stronger than we projected — the team is already drafting a follow-up campaign.
第三四半期の数字は予想よりも強かったので、チームはすでに次のキャンペーンを準備しています。
The third quarter numbers came in stronger than expected, so the team is already preparing the next campaign.
Vamos a reunirnos con el equipo de marketing el miércoles para alinear el mensaje antes del lanzamiento.
We'll meet with the marketing team on Wednesday to align the messaging before launch.
Why people use it
Listen to any tab
YouTube, Zoom, Google Meet, Teams, Spotify in a browser tab. Pick the source through your browser's screen-share dialog, enable Share audio, and the translation starts.
Speech recognition by Groq Whisper
Whisper Large v3 Turbo runs in Groq's cloud — the fastest hosted Whisper today. Free tier is generous (~8 hours of audio per day per key).
Four-engine translation
Google → Microsoft → DeepL → MyMemory waterfall. If one fails or rate-limits, the next takes over instantly. You can plug in your own MS / DeepL keys for premium quality.
Bilingual subtitles
Pop out the subtitle window onto a second screen or floating panel. Source text on top, translation under it. Font size adjustable.
Export transcript
Copy as text, save as .txt, or export as .srt to subtitle a video later.
Install as a desktop app
It's a PWA. Click the Install button in Chrome's address bar and it gets its own dock icon, its own window, no browser chrome.
How it works
Get a Groq API key (free)
Sign up at console.groq.com, copy your key, paste it into the Keys tab. Add 2-3 keys to extend the daily quota.
Pick the audio source
Click Start. Your browser asks which tab or window to capture, and to enable Share audio. Pick the one you want to listen to.
Read the translation
Sentences appear in real time, source on the left, translation on the right. Pop out a separate subtitle window if you want one.
BYOK = Bring Your Own Key
We don't run a backend. Your Groq key lives in your browser's localStorage. Every API call goes directly from your browser to Groq, Google, Microsoft, DeepL or MyMemory. We never see your key, your audio, or your transcripts. That's the entire privacy story — there's no opt-out toggle to read because there's nothing to opt out of.
- Your key stays in your browser. No server holds it.
- Your audio stays on your machine. We don't proxy it.
- Your transcripts stay in your localStorage. We don't log them.
- Source code is open — you can read what every request does.
Common questions
Do I need to install anything?
No. Open the URL, paste your Groq key, press Start.
Is it really free?
Yes — Groq's free tier gives you about 8 hours of transcription per day per key. Add 2-3 keys if you need more.
What about macOS system audio?
Browsers can only capture tab audio on macOS. To capture system audio (Zoom, Spotify, Skype), install BlackHole (free, open source) — full guide on the FAQ page.