Metheus Extension: Language Immersion Engine

Turn the web and streaming video into your language-learning workspace.

Learn languages through videos, browsing, and the content you actually love. 100% free. Metheus turns YouTube, Netflix, social media, and any website into your personal language learning platform. Enjoy native content without switching tabs, breaking your flow, or paying expensive subscriptions. ✨ Beginners → Build a strong foundation from day one with +1,000 built-in essential decks & courses. ✨ Intermediate & Advanced → Consume native content much sooner using interactive subtitles and context-aware reading tools. 🚀 How It Works Browse 🌐 → Open any video, news article, or website that interests you. Explore 🔍 → Click any unknown word or press Ctrl+D for instant contextual definitions. Mine ⚡ → Create media-rich flashcards (sentence, audio, screenshot, and source URL) with a single click. Master 📈 → Review and sync all your progress seamlessly on metheus.app. 🌟 WHAT MAKES METHEUS UNIQUE 🎯 +1,000 Essential Decks & Courses • Integrated vocabulary lists focusing on high-frequency words. Start learning immediately without spending hours building decks from scratch. 🎬 Video & Streaming Immersion • Interactive subtitles across your favorite video platforms. • Custom keyboard shortcuts to repeat dialogue, auto-pause, and capture vocabulary on the fly. 📖 Instant Contextual Dictionary (Ctrl+D) • Real-time lookups on any webpage. Get the precise definition for the specific sentence you're reading, not just generic entries. 🎨 Smart Text Highlighting • Metheus color-codes words on any website based on your learning status (Known, Learning, or New) so you can track progress visually. ⚡ 1-Click Media-Rich Flashcards • Capture full flashcards containing the target word, surrounding sentence, native audio, screenshot, and original source link. 🆓 100% Free & Unlimited • Unlimited access to every immersion and mining feature with no paywalls, trial periods, or credit cards required. 🔒 Privacy & Permissions: Metheus requests page access strictly to render overlay tools, subtitles, and dictionary popups. It runs using local storage, contains zero ad trackers, and respects your privacy.