Beta · Language Reactor for the open web
Watch & learn
Watch any YouTube video with side-by-side captions, click words for definitions, save them to a deck, and study at your level. Curated learner channels in 4 languages.
🇬🇧English
Starter videos
Conversations in British Pubs — Easy English 225
Street interviews in UK pubs with bilingual subtitles.
Everyday Conversations with Strangers — Easy English 224
Real conversational English from the streets.
ADVANCED LEARNERS: Stop making these ADVANCED grammar mistakes!
British English grammar at advanced level with clear captions.
Are YOU Mispronouncing These 50 Common English Words?
Pronunciation drill of 50 common English words.
My Morning Routine: English Vocabulary Lesson
Conversational American English on a daily-life topic.
SPEAK With Me: English Speaking Practice
Interactive speaking-practice format with prompts.
Listening Comprehension — The Networking Elevator
Structured listening lesson with on-screen captions.
Improve Your English with Shadowing — Tongue Twisters
Shadowing technique for advanced English learners.
Channels worth following
VOA Learning English
beginnerVoice of America's slow-paced English news for learners, with reliable captions.
@voalearningenglish
BBC Learning English
allBBC's flagship English-learning channel — vocabulary, pronunciation, news in slow English.
@bbclearningenglish
Easy English
intermediateStreet interviews around the UK / English-speaking world — natural everyday speech with bilingual subtitles.
@easyenglishvideos
Rachel's English
allAmerican English pronunciation and accent training — extremely clear captions.
@rachelsenglish
English with Lucy
intermediateBritish English grammar and pronunciation — long-time favorite of intermediate learners.
@EnglishwithLucy
Speak English with Vanessa
allAmerican English conversation, pronunciation, and idioms — friendly and clear.
@SpeakEnglishWithVanessa
EnglishClass101
beginnerInnovativeLanguage's English channel — short structured lessons with on-screen captions.
@EnglishClass101
linguamarina
advancedVlog-style English content from a non-native speaker — relatable for advanced learners.
@LinguaMarina
Phase 1 · what works today
- YouTube IFrame player + side-by-side caption strip pulled from YT's public timedtext feed
- Curated starter videos + recommended channels in 4 languages
- Paste any YouTube URL or video ID to watch + read captions
Phase 2 · coming next
- Click-to-define popovers (JMdict for 🇯🇵, Wiktionary for 🇪🇸/🇫🇷)
- Furigana ふりがな over kanji via kuromoji.js
- YouGlish-style word search across captioned videos