PolySubs – Multilingual Subtitles & Language Learning

See YouTube subtitles in several languages at once. Click any word to translate it and practise with quizzes and speaking.

Learn several languages at once from the YouTube videos you already love. PolySubs shows the original subtitles of any YouTube video together with translations in as many languages as you want, each in its own colour. Click any word to see its meaning in all your languages, hear it, and save it to your word list. LEARN, DON'T JUST TRANSLATE • Multilingual subtitles: the original line plus several translations at the same time • Click any word: instant meaning in every language you are learning • Video quiz: when the video ends, test yourself with questions built from what you just watched • 6 question types: word → meaning, meaning → word, fill in the blank, listening, sentence order and speaking practice • Speaking practice: say the sentence out loud and get a pronunciation score • Read aloud: hear any line in a natural voice while the video volume lowers automatically • Progress for every word in every language you learn • Export your saved words to Anki or Excel (CSV) • Keyboard shortcuts: repeat, loop, next and previous sentence • Interface in 10 languages: English, Arabic, Spanish, French, Portuguese, Chinese, Hindi, Russian, Indonesian and German FREE AND PREMIUM PolySubs is free to use with 2 translation languages, 5-question quizzes and up to 50 saved words. Premium unlocks unlimited languages, all question types (including speaking), up to 30 questions per quiz and unlimited saved words. Premium costs $3/month or $25/year, and your first month is free. Each license works on up to 3 devices. PRIVACY Your settings, saved words and progress stay in your browser. PolySubs has no account, no ads and no tracking. PolySubs is an independent product and is not affiliated with YouTube or Google.