VocaMax – Learn English on YouTube with Dual Subtitles

Dual subtitles on YouTube: click any word to translate, practice dictation and shadowing, save vocabulary and review on schedule.

Learn English with the YouTube videos you already watch. VocaMax adds dual subtitles (English + your language), an interactive transcript, click-to-translate words, dictation and shadowing practice, and a vocabulary notebook you can review on a spaced-repetition schedule. Great for students, IELTS and TOEIC preparation, or anyone who wants to understand native English speakers. Also works for Chinese, Japanese, Korean and other languages that have subtitles. DUAL SUBTITLES ON YOUTUBE • Bilingual subtitles on the video: the original line plus a translation in your language. • Interactive transcript beside the video, synced sentence by sentence — karaoke-style, each word lights up as it's spoken. • Real sentences instead of broken lines: English auto-generated captions (even without punctuation) and uploaded captions are re-split into sentences, and [Music] tags are removed. • Pick the VocaMax lesson, uploaded or auto-generated captions for each video, and fix subtitles that run early or late (±0.25 s, saved per video). CLICK ANY WORD TO TRANSLATE • Pronunciation, CEFR / HSK level, dictionary meanings and the meaning in this exact sentence. • Words to learn: for English videos, about 10 words just above your level, with meanings in context — save or practice them in one click. • Translate selected text on any website: right-click, Alt+T, or an optional "Look up" button. • Translations use Chrome's built-in on-device translator when available. PRACTICE LISTENING AND SPEAKING • Dictation: type what you hear and get word-by-word feedback. • Fill in the blanks and quiz on the key words of each sentence. • Shadowing: repeat the sentence and get a score for words, pace and volume. • Listening tools with keyboard shortcuts: replay, previous / next sentence, loop, pause after each sentence, 0.5×–1.25× speed. BUILD YOUR VOCABULARY • Save words with the original sentence and video timestamp; export to CSV for Anki. • Practice saved words in Chrome's side panel: flashcards, meaning, listening and typing questions — words you often get wrong come first. • Sign in with a free VocaMax account to sync words to your notebook, review with spaced repetition on the web, the app and the extension, and see today's words on a "Review" button. OPTIONAL ON-DEVICE AI (experimental) • On computers with Chrome's built-in Gemini Nano: explain a sentence's meaning and grammar, and summarize English videos part by part. It runs on your device. No account needed to start — your notebook stays on your device and guests get a few practice sessions a day. Signing in is free and adds syncing, a review schedule, unlimited practice and server translation for video subtitles.