LingoHey: AI Dictionary & Dual Subtitles for English

Learn English as you browse: AI word lookup, sentence translation, bilingual pages, YouTube & Bilibili dual subtitles.

LingoHey helps Chinese speakers learn English while reading the web and watching YouTube or Bilibili: select a word to see what it means in this sentence, and every word you look up is saved with the sentence you found it in. Why LingoHey • AI explains the word in your sentence: the meaning in context first, then common usage, easily confused words and etymology • Dual subtitles on YouTube and Bilibili: click any word in the subtitles, and use A / S / D to replay sentence by sentence • A vocabulary list that remembers where you met each word: the sentence, the page or the video timestamp 📖 Look up words • Double-click or select a word for US / UK phonetics, pronunciation and concise definitions; the 10,000 most common words open instantly • Inflected forms point to the base form (showed → past tense of show); URLs and code identifiers are split into words • Brand names, cryptocurrencies and programming terms that aren't in the dictionary get a short name card explaining what they are; misspellings get suggestions • AI explanations: meaning in context, usage, confusables and etymology (drawing on Wiktionary); collapse them when you don't need them 📝 Translate sentences and pages • Select a sentence to translate it; long passages are shown sentence by sentence • AI sentence explanations: an AI translation plus notes on idioms, tone and anything that isn't literal • Alt+A shows each paragraph followed by its translation, skipping navigation and code; hold Alt and click to translate one paragraph 🎬 Dual subtitles and video summaries (YouTube, Bilibili) • English subtitles with a translation line; the word being spoken is highlighted • Click a word to look it up and the video pauses; A / S / D for previous, replay, next • One click for an overview, chapters and expressions worth learning, with clickable timestamps 🖼 Images and quick lookup • Right-click an image or drag a box to read and translate the English in it • Copy text or a screenshot in any app and press ⌘⇧2 (Windows: Ctrl+Shift+2) to look it up in a small window 📚 Vocabulary list • When signed in, words are saved by base form with the sentence and source, to review at lingohey.com 💡 Free and Pro • Lookups, machine translation, bilingual pages and dual subtitles are free • AI explanations, AI translation, video summaries and AI-refined subtitles include a free weekly allowance when signed in • Pro raises the weekly allowance — see lingohey.com/pricing 🔒 Privacy • A notice before anything is saved; sensitive URL parameters removed; nothing recorded in incognito windows, on private networks or sign-in pages; exclude sites, delete records or your account any time • Privacy policy: lingohey.com/privacy-policy 🧘 Stays out of your way • Cards appear when results are ready; sign-in, payment and banking pages stay quiet by default; turn off just this time, for a site, or everywhere • Settings sync across your devices with your Chrome account; light and dark themes; Chinese and English interface Languages: dictionary definitions are in Simplified Chinese; AI explanations and translations can be in Simplified Chinese, Traditional Chinese or English. Feedback and help: soarfirework@lingohey.com