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.
🇪🇸Español
Starter videos

What's Your Apartment Like? — Easy Spanish 401
Apartment vocabulary via street interviews with bilingual subs.

11 Typical Colombian Expressions — Super Easy Spanish 142
Latin-American Spanish slang explained.

Spanish Story for Beginners: "Crash Diet"
Comprehensible-input story at beginner level.

Best Spanish-Speaking Movies You Need to Watch
Spanish cinema discussion at intermediate pace.

Practice Giving Time in Spanish 🇲🇽
Short structured time-vocabulary practice.

IR in the Present Tense — Mastering Spanish Verbs
Quick lesson on the verb 'ir' in present tense.

Learn to Exaggerate in Spanish
Mexican Spanish on natural ways to emphasize.

Have a Conversation in Spanish — 3 verbs to ask & answer
Conversational practice with three foundational verbs.
Channels worth following
Easy Spanish
allStreet interviews across Spain and Latin America — bilingual subtitles, real speech.
@easyspanish
Dreaming Spanish
beginnerComprehensible-input Spanish across all levels — clear Spanish-only captions.
@DreamingSpanish
Notes in Spanish
intermediateConversational Spanish from Madrid — proper subtitles for both speakers.
@notesinspanish
TED en Español
advancedTED talks delivered in Spanish — high-quality auto-captions and translations.
@TEDenEspanol
SpanishPod101
beginnerInnovativeLanguage's Spanish channel — bite-sized structured lessons with captions.
@SpanishPod101
Butterfly Spanish
intermediateConversational Spanish lessons from Mexico — natural pace with clear subtitles.
@butterflyspanish
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