Real-time voice translation + AI dubbing
Live subtitles and low-latency dubbing for anything that plays sound — the course you're taking, the stream you're watching, the call you're in. Nothing to upload. No waiting.
Coursera, Udemy, Skool, Whop, YouTube, Twitch — if it plays in a tab or an app, DubTab handles it.
Two ways to run DubTab
Same engine, same subscription. The only question is where the sound is coming from.
Browser extension
Chrome & Edge · Windows, macOS, Linux
For anything that plays in a browser tab — which is where most courses live. One click to install, nothing to download, and it follows you to every machine you sign in on.
- Coursera, Udemy, Skool, Whop — any course that plays in a tab
- YouTube, Twitch, Netflix, Bilibili and live streams
- Runs inside the browser, so Windows, macOS and Linux all work
Windows desktop app
Windows 11 · 64-bit
Covers every sound your PC makes — browser tabs included — or just the one app you pick. For downloaded course files, desktop players, and anything that never opens in a tab.
- Everything your computer plays, browser tabs included
- Or aim it at one app — a downloaded course, a player, a call
- For local files and apps that never open in a browser
If it makes sound, DubTab can listen
Plus Skool, Whop, and any other course player that runs in a tab.
How it works
1. Install DubTab
The extension for browser tabs, the app for everything else. Or both.
2. Point it at the sound
A tab, one app, or the whole system — whatever is playing right now.
3. Hit Start
Pick your languages and voice. Subtitles and dubbing land in about half a second.
Built for how you actually watch
Learn without language limits
Take courses on Coursera, Udemy, Skool, Whop, or any platform — real-time subtitles and dubbing let you focus on learning, not translating.
Catch every livestream moment
YouTube Live, Twitch, or any stream — get instant translations so you never miss the action or the jokes.
Stay present in global meetings
Zoom, Google Meet, Teams — in the browser with the extension, or in the desktop clients with the app.
Follow your favorite idols
K-pop lives, variety shows, fan content — understand every moment without waiting for fan subs.
Why it's different
Real-time, low-latency
Dubbing and subtitles appear in ~0.5s, good enough for live streams.
Voice options & Ducking
Choose your AI voice and control original volume ducking.
Dual subtitles
See original and translation at the same time (optional).
Universal compatibility
If it plays sound, DubTab can listen — a tab, an app, or the whole machine.
No manual uploads
No files, no exports. DubTab translates whatever the tab is playing, as it plays.
Privacy controls
Source tab audio is processed in real time and is not saved as a recording. If you turn on Save dubbed audio, only the translated AI voice generated by DubTab is saved privately to History, where you can replay or delete it.
50+ Languages Supported
Dub any video into your preferred language with natural-sounding AI voices
More languages coming soon
Simple plans, choose your hours
Yearly plans: 17% off, 2 months free. Get all hours upfront with no monthly reset.
Free
15 minutes total
3 AI credits
For AI Summary & Ask AI
One-time trial. No reset.
Enough for ~1 short video or a few minutes of a call.
- Ultra-low latency real-time dubbing
- Optional bilingual subtitles
- Multiple natural AI voices
- 60+ languages supported
- YouTube, courses, podcasts, meetings
- Email support & Discord community
Starter
9 hours / month
~$2.1/hr
30 AI credits / mo
For AI Summary & Ask AI
A few long videos or meetings each month
- Ultra-low latency real-time dubbing
- Optional bilingual subtitles
- Multiple natural AI voices
- 60+ languages supported
- YouTube, courses, podcasts, meetings
- Email support & Discord community
Pro
20 hours / month
~$2.0/hr
100 AI credits / mo
For AI Summary & Ask AI
Regular weekly courses, meetings, or streams
- Ultra-low latency real-time dubbing
- Optional bilingual subtitles
- Multiple natural AI voices
- 60+ languages supported
- YouTube, courses, podcasts, meetings
- Email support & Discord community
Power
40 hours / month
~$1.7/hr
300 AI credits / mo
For AI Summary & Ask AI
Frequent meetings, classes, or livestreams
- Ultra-low latency real-time dubbing
- Optional bilingual subtitles
- Multiple natural AI voices
- 60+ languages supported
- YouTube, courses, podcasts, meetings
- Email support & Discord community
Ultra
80 hours / month
~$1.6/hr
1,000 AI credits / mo
For AI Summary & Ask AI
Heavy daily use across multiple languages
- Ultra-low latency real-time dubbing
- Optional bilingual subtitles
- Multiple natural AI voices
- 60+ languages supported
- YouTube, courses, podcasts, meetings
- Email support & Discord community
Team
For teams that need moreCustom / Contact for quota
- Flexible seats — add or remove team members anytime
- Shared hours pool across your entire team
- Dedicated account support & onboarding
No credit card required. No auto-charge.
Why I built DubTab
Hi, I'm Ethan Hu — and I built DubTab for one simple reason: I wanted to spend less energy fighting the language, and more energy understanding the content.
DubTab provides real-time translation in your browser with live subtitles and optional AI voice dubbing, so you can keep up with videos, courses, and meetings without constant pausing or rewinding.
If DubTab helps you even a little, that means a lot to me. And if it doesn't, tell me what would make it better — I read every message.
Questions? We've got answers.
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