Lanmma - AI Powered YouTube Captions Analyzer

Master languages naturally on YouTube. Instant AI translations, context analysis, and examples with just one click.

Lanmma: Master Languages Naturally via YouTube Lanmma is an AI-powered language learning extension designed to turn YouTube into an immersive classroom. Instead of pausing videos to look up words in external dictionaries, Lanmma allows you to interact with captions in real-time to gain deep, contextual understanding of any language. Whether you are watching news, movies, or educational content, Lanmma helps you bridge the gap between "studying" a language and actually "absorbing" it. Core Features Contextual AI Word Analysis Powered by Google Gemini AI, Lanmma goes beyond simple translations. It analyzes the specific sentence you are watching to explain how a word is used in that exact context, including its grammatical nuances and cultural register. Vocabulary Library Save any word or phrase with a single click. Your personal library automatically stores the original video link and the exact timestamp, allowing you to revisit the context whenever you need a refresher. Premium Speech Synthesis Listen to accurate, high-quality pronunciations. Lanmma integrates with industry-leading TTS engines like ElevenLabs and Google Translate to ensure you hear the correct native-level intonation. Interactive Caption Overlay A seamless, high-performance UI that overlays YouTube captions without interfering with the viewing experience. It supports auto-detection of languages and respects bidirectional text (RTL/LTR). Privacy and Transparency Lanmma is built with a "Privacy First" philosophy. No user data is ever collected or transmitted to external servers. All your settings, API keys, and saved vocabulary are stored locally on your device. The extension operates directly between your browser and the trusted API services you choose to connect. Getting Started Install the extension and complete the quick "Auto Setup" to link your API key. Open any YouTube video that has captions. Use the Lanmma toggle button below the video player to activate the overlay. Click any word to receive an instant, native-level explanation. Lanmma is designed for serious learners who want to master a language through authentic content. Stop translating and start learning.