Jargon

🚀 Turn every website into a language lesson

Jargon weaves language learning directly into the pages you already read. No separate app. No flashcard grind. No schedule. Just browse the internet and pick up vocabulary, grammar, and pronunciation naturally along the way.

🌍 Learn 20+ languages

Korean, Mandarin Chinese, Spanish, French, German, Japanese, Portuguese, Italian, Arabic, Hindi, Russian, Dutch, Swedish, Turkish, Thai, Vietnamese, Indonesian, Polish, Greek, and more.

🎯 Built for your goals and level

Studying for TOPIK, HSK, JLPT, DELE, or CEFR? Jargon adapts to your proficiency so beginners get confidence-building recognition, and advanced learners get nuanced, context-heavy challenges.

🧠 How it works

- Quiz Mode: Jargon highlights words and phrases on the page you are reading. Click to get quizzed with questions generated from the actual content, including fill-in-the-blank, matching, synonyms, and definitions.
- Tutor Mode: English words are replaced inline with your target language.
- ✅ Green words are ones you already know.
- 🟣 Indigo words are new at your current level.
- 👀 Hover to peek at meaning.
- 💾 Click to save words to your personal Vocabulary Jar.

🫙 The Floating Jar: your always-ready quiz companion

A lightweight, always-present jar follows you across sites for quick practice sessions, using spaced repetition (SRS) to prioritize reviews that are due and then pull in new context from what you are reading.

⏱️ Spaced repetition that actually works

Built in review intervals: 1 day, 3 days, 1 week, 2 weeks, 1 month, and 3 months.

🧩 Grammar help, right when you need it

Grammar-aware questions adjust to your level. After you answer, you get clear tips, and a dedicated grammar notes section grows as you learn.

🎮 Games that make vocabulary stick

- Speed Round: timed quizzes for fast recall.
- Memory Match: Duolingo-style matching.

Both can filter by SRS status.

🧭 Works on the websites you already use

YouTube, Reddit, Twitter/X, Medium, news sites, blogs, and more. Any English page becomes a lesson.

✨ Start learning today. Install Jargon and turn the web into your classroom