Online Course Translator hear the instructor in your language.
DubTab translates online courses as you watch — on course platforms, in community classrooms, or in a members area on the creator's own site. An AI voice dubs the instructor in your language, with subtitles on screen. The course doesn't need subtitles of its own, and the instructor doesn't have to set up a thing.
Free 15-minute trial · No credit card · Works on courses without subtitles
Works where your course is
Pick your platform for the details — or open any lesson in Chrome and turn DubTab on.
And other course sites in your browser
Teachable, Kajabi, Thinkific, Hotmart, LinkedIn Learning, MasterClass, Domestika, Skillshare, and university systems like Canvas, Moodle and Panopto — plus members areas on a creator's own website. DubTab listens to whatever the tab is playing, so it doesn't need the platform's help.
Class in an app, or a downloaded course?
The Zoom and Teams apps, and course videos saved on your computer, don't play in Chrome. The DubTab desktop app for Windows and Mac translates one app, or everything your computer plays.
Translate a course in 3 clicks
1. Add DubTab to Chrome
One click from the Chrome Web Store — the free trial is included. It works in Edge too.
2. Open a lesson
On Udemy, in a Skool classroom, or in the members area on the creator's site — wherever your course is.
3. Turn on dub & subtitles
Pick your language once. The AI voice starts within seconds and follows every lesson you play.
Made for how courses work
Works on courses with no subtitles
Plenty of courses have no captions at all — or only in the instructor's language. DubTab doesn't need them: it listens to the lesson itself, in any of 60+ languages.
Keep your eyes on the lesson
In a course, the screen is the lesson — code, a canvas, a chart, a live demo. Hear the explanation in your language while you watch what the instructor is doing.
Bilingual subtitles for new terms
See the instructor's original words next to the translation — useful when a course teaches vocabulary you'll keep using in the original language.
Built for long courses
Leave it on for a whole module. If you pause a lesson and step away, DubTab pauses itself after a few minutes of silence.
The instructor's voice stays underneath
The dub plays over the original audio, which stays underneath at a lower volume — so you still hear the instructor's tone and emphasis. You set the balance.
Keeps pace with the lesson
Auto catch-up keeps the voice in step with the instructor, so the dub doesn't drift further behind as the lesson goes on.
After the lesson
Every lesson you translate is saved to your DubTab history, with tools for going over it.
A summary that reads like study notes
AI Summary recognizes a lesson and writes it up in your language: an outline in the order it was taught, the key terms, any homework the instructor gave, and a few questions to test yourself.
A mind map of the lesson
Each branch is a topic from the lesson, with the time it came up. Click one to read what the instructor actually said there.
Ask about what was taught
Ask AI answers questions about the lesson, and each answer links to the line in the transcript it's based on.
One place per course
Group lessons into a collection for each course, so a 40-lesson course doesn't get lost among everything else you've watched.
AI Summary and Ask AI use AI credits. Every plan includes some, and they're counted separately from your translation hours.
Who translates courses with DubTab
Learners whose course wasn't made in their language.
Tech & IT certifications
Cloud, networking, security and programming courses, where the instructor types while talking — follow the screen and hear the explanation.
AI, automation & online business
Community classrooms and weekly calls on Skool and Whop, taught fast and casually — usually in English.
Trading & investing
Strategy lessons and live market sessions — hear the reasoning in your language while you watch the chart.
Art, design & 3D
Drawing, illustration and 3D classes, many of them taught in Korean or Japanese, where your eyes belong on the canvas.
University lectures
Recorded lectures and seminars in a language you're still learning — follow every point, then go over the summary.
Skills & hobbies
Martial arts, fitness, cooking, dog training — lessons where you need to watch the technique while you listen.
What does your course platform already give you?
Some platforms translate — a few courses, a few languages, mostly as text. Here's what each kind of course site gives you, and where DubTab fits.
| Where your course is | What it gives you | DubTab |
|---|---|---|
| A Coursera course with an AI-dubbed version | Dubbed audio in Spanish, French, German or Brazilian Portuguese (100+ courses) — use it | ✓ Every other course and language: dub + subtitles in 60+ languages |
| Udemy, Coloso and other course marketplaces | Machine-translated [Auto] subtitles on some courses, in some languages — text only | ✓ A voice + subtitles in your language, on any course |
| Community classrooms and members areas — Skool, Whop, Kiwify or the creator's own site | Whatever the creator uploaded — usually no translation | ✓ Listens to the lesson itself — no subtitles needed |
| University lecture recordings | Auto-captions, and translated captions on some systems — if your school turned them on | ✓ Any recording that plays in Chrome |
| A live class on Zoom or Teams | Translated captions if the host's plan includes them — text only | ✓ The desktop app — or the extension, if the class runs in your browser |
| The course platform's phone app | Watch anywhere, often offline too | Not on phones — Chrome, Edge or the desktop app on a computer |
Already have subtitles in your language? Keep them.
DubTab doesn't replace them — it adds a voice. Read along, or listen while your eyes stay on the code, the canvas or the chart. Use the dub, the subtitles, or both.
Bought it on the creator's own site?
Plenty of courses aren't on a big platform: you buy from the creator, get an email, and open the lessons in their members area. DubTab doesn't need the platform's help — if the lesson plays in Chrome on your computer, it can hear it and dub it.
DubTab doesn't download the course.
It translates the lesson's audio as it plays in your tab — processed in real time, not saved as a recording. The video stays on the course site, and there's nothing for the instructor to set up.
Frequently asked questions
The course you bought — in your language.
Install once. Every lesson you open, on any course site, can speak your language.
Add to Chrome — FreeFree 15-minute trial · Works on Edge too · Desktop app for Windows and Mac