Learn English, Spanish and 30+ other languages while watching YouTube, Netflix, TED and Coursera
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InterSub. interactive subtitles help elevate your language skills while watching videos
InterSub. interactive subtitles help elevate your language skills while watching videos
Get an instant translation of new and unknown words in English, Spanish and 30 other languages, save and manage them in your dictionary, and learn on the go with our mobile app
Get an instant translation of new and unknown words in English, Spanish and 30 other languages, save and manage them in your dictionary, and learn on the go with our mobile app
How it works
How it works
Install the browser extension in 10 seconds
Choose a video on YouTube, Netflix, TED or Coursera and switch on subtitles
Get an instant translation of a word and its context by just hovering on it
Or choose the same language (e.g. English to English) to get a word description from the Oxford Dictionary
Learn saved words in our or your favourite mobile app
Use statistics to learn words even more effectively and efficiently
Install the browser extension in 10 seconds
Choose a video on YouTube, Netflix, or Coursera, TED and switch on subtitles
Get an instant translation of a word and its context by just hovering on it
Or choose the same language (e.g. English to English) to get a word description from the Oxford Dictionary
Learn saved words in our or your favourite mobile app
Use statistics to learn words even more effectively and efficiently
See in action
See in action
Grow your language skills with no extra time spent
Grow your language skills with no extra time spent
Our customers are fond of InterSub.
Our customers are fond of InterSub.
  • Elena
    Love the feature! My English is pretty good, but I'm not native, so, sometimes a little help could be handy. The fact that now I can check the translation without distraction is awesome! And it is completely worth the few bucks of a subscription.
  • Nick
    I was invited to the beta-test, and was quite impressed! Thank you, guys, and can't wait for the Dictionary function.
  • Alex
    This function is really helpful! Translation to French seems pretty accurate. It’s great that there is no need to interrupt watching if you didn't understand a new word.
Start now
Start now
Use it for free! Upgrade anytime for $4/mo
Use it for free! Upgrade anytime for $4/mo
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