01 / UNDERSTAND
Two languages. One conversation.
Get the original words and their translation together. Switch between scrolling and immersive captions, right on the sites you already watch.
Live captions · Multiple languages
A little less language barrier. A lot more world.
Great content.In your language.
Videos, livestreams, podcasts, and classes. Turn what you hear into live bilingual captions, and keep your attention on the good stuff.
10 free minutes every day·No credit card
For desktop Chrome · Beta
A different way to see the world.
NOTES ON CURIOSITY / 0100:12Bilingual captionsEnglish → 中文
A few words worth passing on
Select a line to preview this bilingual moment.
Sample clip · 00:1200:00 / 00:12
PRO FEATURE
Keep the words that stay with you.
Sample transcript · English → 中文
The best ideas start with a simple question.
最好的想法，从一个简单的问题开始。
What if we looked at things a little differently?
如果换个角度看世界，会怎么样？
There is always something new to discover.
总有一些新事物，值得我们去发现。
Product preview · Sample content
At home wherever you watch
YouTube videosLivestreamsPodcastsOnline classes
SEE IT IN MOTION
From understanding
to a shared moment.
See bilingual captions follow the audio, then turn a few favorite lines into a clip you can share.
▷ Watch the 30-second demoMORE THAN A MOMENT OF UNDERSTANDING
Take it in. Take it with you.
From a passing sentence to a lasting idea. Understand it, share it, come back to it.
02 / SHARE
Good ideas deserve company.
Choose the first and last lines of a YouTube moment. Share a link with bilingual captions, so your friends can get straight to the part you loved.
YouTube · Bilingual clip links
03 / KEEP
Worth hearing. Worth keeping.
Pro accounts can choose to save the original and translated transcript. Revisit your history or export TXT and SRT files for your next study session.
Pro · Optional saving & export
YOUR NEXT VIDEO IS A GOOD PLACE TO START
Set up once. Open up a world.
The Chrome Beta is ready to try. A little setup now, and your next translation is a click away.
Download for ChromeBeta extension · ZIP- 01
Download and unzip
Download the ZIP and extract it. Keep the entire extension folder together.
- 02
Add it to Chrome
Show installation steps
Open your extensions page, enable Developer mode, choose Load unpacked, and select the extracted folder.
- 03
Log in. Tune in.
Sign in by email, generate an API Key, and paste it into the extension. Open a tab with audio, choose your languages, and press start.
A LITTLE ROOM FOR CURIOSITY
Start with a little. Discover a lot.
Try it on your everyday watchlist. Explore Pro when you want to keep coming back to the words.
Free
For your everyday videos, streams, and podcasts.
$0to get started
- 10 minutes of translation each day
- Live bilingual & immersive captions
- Bilingual YouTube clip sharing
Pro
For the things you want to study, save, and revisit.
Go a little further
- A higher daily translation allowance
- Optional full transcript saving
- History and TXT / SRT exports
Pro features are available for enabled accounts. Public pricing and self-service upgrades are not open yet.
A FEW THINGS YOU MIGHT BE WONDERING
Good questions.
Where does it work?
Tabtongue captures the current tab’s audio on most regular websites with videos, livestreams, podcasts, or courses. Chrome’s internal pages and content that blocks audio capture are not supported. Bilingual clip sharing currently works with YouTube.
Which languages can I use?
22 languages, with Chinese or English on one side of each translation pair, including Japanese, Korean, French, German, and Spanish. Cantonese and Sichuanese are supported as source languages. Not every pair of languages can be translated directly.
What happens to my audio and captions?
Tabtongue does not save audio files. Live audio is sent to the translation service for processing. Pro accounts can opt in to saving transcripts in their own history and delete them later. Anyone with a shared clip link can view its selected captions.
Are the captions live?
Captions are generated as the audio plays, without waiting for the whole video to finish. The delay depends on your connection, the speech, and the translation service’s response.
What is included in Free and Pro?
Free accounts get 10 minutes of daily translation, bilingual captions, and YouTube clip sharing. Pro adds a higher allowance and optional transcript saving and export. There is no self-service paid upgrade yet.
How do I get bilingual subtitles on YouTube?
Install the Chrome extension, open the video, choose your language pair, and press start. Tabtongue captures the tab’s audio and shows the original and translated captions live, about 3 seconds behind the speech. You can also select a range of lines and share them as a bilingual clip link.
Does it work on live streams, Twitch, or web meetings?
Yes — anything playing audio in a Chrome tab, including livestreams, Twitch, podcasts, online classes, and browser-based meetings. It captures the tab’s audio, so it can’t reach the sound of a separate desktop app.
How is it different from YouTube’s built-in captions?
It works on any tab, not only YouTube; it shows the original and its translation together as paired bilingual captions; and it runs on audio that has no captions at all, such as livestreams and podcasts.
THERE’S A WHOLE WORLD WORTH HEARING.