80 languages
Spanish, Japanese, Korean, Thai, Vietnamese, French and many more.
Binge-watch.Accidentally learn.
See every line in two languages while you watch YouTube. We highlight one useful word at a time and keep every one in your word list, no clicking needed.
- Free
- No sign-up
- Works on YouTube & more
Café chat · Ep. 3
Want a coffee before the meeting?
¿Quieres un café antes de la reunión?
How it works
Learning that fits into your watch time
1
Two subtitles, one screen
Pick the language you're learning and the one you already know. Both lines show up together, right on the video, so you never pause to look things up.
Watching with a friend or partner from another country? You each get your own language on screen. Best of both worlds.
Want a coffee before the meeting?
¿Quieres un café antes de la reunión?
2
One word worth learning
Instead of colouring the whole screen, we only highlight words at the levels you turn on. Their meaning lights up in the translation too.
Tap a level to switch its words on or off.
Hi, can we postpone the meeting to tomorrow? I'm exhausted.
Hola, ¿podemos aplazar la reunión a mañana? Estoy agotado.
3
Quiz yourself on every word
Every word we highlight goes into your word list on its own, no clicking needed. Then a quick quiz, built from the lines you heard them in, helps them stick.
Your word list 5
- HolaHi
- mañanatomorrow
- reuniónmeeting
- agotadoexhausted
- aplazarpostpone
¿Quieres un café antes de la reunión?
What does reunión mean?
Features
Small extension, big upgrade to your watch list
Matches your level
From total beginner to expert. Choose the levels you want to see.
Make it yours
Pick the colour and size that's easy on your eyes. Try it here.
Private
Your settings and saved words stay in your browser.
- No account
- No tracking
- Saved on your device
Works where you watch
YouTube, Viki, WeTV, iQIYI, iflix and Youku.
Start in under a minute
- 1
Add it to Chrome
Install it from the Chrome Web Store. It's free and takes one click.
- 2
Play a video
Open any YouTube video that has subtitles (most do).
- 3
Pick your languages
Click the extension icon and choose what you're learning and what you speak.
Reviews
What learners say
Tried it? Tell us how it went. Every comment helps us make it better.
M
Marcus T.Spanish → English · YouTube
★★★★★Finally an extension that doesn't paint every single word like a Christmas tree. Highlighting just 1 B1 word in yellow and its English match in cyan lets me actually enjoy the video.
Review
E
Elena R.Mandarin → English · iQIYI & WeTV
★★★★★The 'Blur until hover' setting under Subtitle Styles is my favorite feature. I listen to the Mandarin dialogue first and only hover when I miss a phrase.
Review
K
Kenji S.Japanese → English · YouTube & Viki
★★★★★Zero sign-up or tracking. Everything stays in local storage and the dual subtitles kick in instantly. Super lightweight compared to bloated alternatives.
Suggestion
FAQ
Questions, answered
Is it really free?
Yes. Two subtitles at once, the video's own subtitles and YouTube's built-in translations all work for free, straight away. The optional AI extras (smarter translations and word highlights) need an OpenRouter key, which you add in Settings. OpenRouter bills you directly for what you use.
Do I need to create an account?
No. There's nothing to sign up for. Your settings and saved words stay in your own browser.
Which websites does it work on?
YouTube, Viki, WeTV, iQIYI, iflix and Youku.
How many words get highlighted?
Only the words at the levels you turn on, so most of each line stays unmarked. Each level works on its own: turn on more levels and you see their words too. Highlighting everything turns the screen into a rainbow and you stop enjoying the show.
Can I test myself?
Yes. Turn on "Blur until hover" and the translation stays hidden until you move your mouse over it.
Does it track what I watch?
No. We don't collect your browsing history or any personal information.