# Desi Lingo

> Learn Hindi from content you love.

Desi Lingo is an immersive Hindi language learning tool — a browser extension and web app that turns any Hindi text into a learning experience. Click any word on any webpage for instant definitions, grammar, and frequency data. Watch YouTube, Netflix, and Prime Video with interactive Hindi subtitles.

## What It Does

- **Popup Dictionary**: 120,000+ word entries from 4 sources. Click any Hindi word on any website for definitions, morphological analysis, transliteration, and word frequency rank.
- **Grammar Detection**: 90+ grammar patterns detected in context — postpositions, verb tenses, compound verbs, conjunctions, and more.
- **Video Subtitles**: Clickable Hindi subtitles on YouTube, Netflix, and Prime Video. Auto-pause study mode, transcript panel, and keyboard shortcuts.
- **Sentence Mining**: One-click sentence capture with screenshots and audio. Export to Anki with the desktop add-on.
- **Vocabulary Tracking**: Track every word across all content. Unknown → Seen → Known progression, synced across extension and web dashboard.
- **Learning Stats**: Heatmaps, streaks, session tracking, daily progress, and vocabulary growth charts.
- **Hindi NLP**: Fully client-side tokenization, lemmatization, compound verb detection, and Devanagari-to-Latin transliteration. Zero API calls.

## Key Pages

- [Homepage](https://desi-lingo.app): Overview and live demo
- [Grammar Guide](https://desi-lingo.app/grammar): 90+ Hindi grammar points with interactive examples
- [Dictionary](https://desi-lingo.app/dictionary): Searchable Hindi-English dictionary (120K+ entries)
- [Dictionary Word Pages](https://desi-lingo.app/dictionary/हम): 48,000+ individual word pages with definitions, frequency rank, transliteration, and grammar links
- [Browser Extension](https://desi-lingo.app/extension): Installation and features
- [Devanagari](https://desi-lingo.app/devanagari): Interactive Devanagari script learning tool
- [User Guide](https://desi-lingo.app/guide/overview): Getting started, features, and troubleshooting
- [FAQ](https://desi-lingo.app/guide/faq): Frequently asked questions
- [Pricing](https://desi-lingo.app/pricing): Free trial and subscription plans
- [Blog](https://desi-lingo.app/blog): Articles about Hindi learning
- [Updates](https://desi-lingo.app/updates): Changelog and new features

## Technical Details

- Browser extension built with WXT (Chrome + Firefox from single codebase)
- Web dashboard built with Next.js, Tailwind CSS, PostgreSQL via Prisma
- All NLP runs client-side — bundled dictionary (120K entries) and forms table (358K inflected forms)
- Custom Devanagari → Latin transliterator
- Word frequency ranks from wordfreq (13K ranked Hindi words)
- 19,061 hand-written curated definitions for the most common Hindi words
- 48,000+ individual dictionary word pages for SEO (statically generated)

## Links

- Website: https://desi-lingo.app
- Privacy Policy: https://desi-lingo.app/privacy
- Terms of Use: https://desi-lingo.app/terms