Subturtle

Turn video subtitles into English lessons. Learn new vocabulary in context as you watch on YouTube and Netflix.

Learn English While You Read and Stream Stop switching between study apps and the things you actually enjoy. Subturtle turns the time you already spend online into effortless language practice — on YouTube, Netflix, Wikipedia, articles, blogs, and anywhere else you read or watch. It transforms your everyday content into your personal learning companion, helping you understand real-life English in context — without ever opening a textbook. Learning should fit your routine, not interrupt it. Three Ways to Capture Words 1. Watch and learn (YouTube & Netflix). Turn on subtitles, then hover any word for an instant translation and definition: - Single word: just hover. - Multiple words: hold Ctrl (⌘ on Mac) and drag to select the phrase. The translation appears right where you need it. 2. Read and learn (any website). Highlight any text on Wikipedia, an article, a blog, your favorite forum — anywhere. A floating Subturtle icon appears with the translation, ready to save with one click. Don't want it on a particular site? Toggle it off per-domain from the popup. 3. Translate on demand (the toolbar popup). Click the Subturtle icon, paste or type any phrase, and get an instant detailed translation. Perfect for quick lookups while you're reading anywhere — even a paper book. Your Learning Toolkit: - Understand instantly: Quick translations for single words or whole phrases in your native language. - Go deeper: Detailed definitions, parts of speech, and real example sentences — without ever leaving the page. - Build your library: Save any phrase to a custom bundle to review later. - Practice with confidence: Open your dashboard to review your saved vocabulary, run flashcard sessions, and chat with your AI Coach to master what you've learned. - Subturtle works with 100+ target languages — pick yours from the popup. Ready to turn captions and pages into conversations? Add Subturtle and start learning the natural way.