Bellek Smart Vocabulary B

Stop forgetting the words you look up.

Bellek is a smart vocabulary builder that turns passive reading into active learning in any language. If you've ever looked up a word and forgotten it five minutes later, this vocabulary builder is for you.

Highlight any word on any webpage to get the definition, synonyms, and the translation into your native language instantly. Save it with one click. Bellek captures the source url and the original sentence as context so you always remember where you found it.

Whether you're expanding your English vocabulary, studying for IELTS or TOEFL, reading in a foreign language, or collecting words that catch your eye — this vocabulary builder gives you one place to save, organize, study, and actually remember them.

Bellek is the browser dictionary and vocabulary tracker that replaces scattered word lists, note-taking apps, and translation tools: everything in one place.

🌍 ENGLISH DEFINITIONS + TRANSLATIONS IN 20 LANGUAGES

Highlight any English word to see its definition, synonyms, and translation in your chosen language instantly.

Reading in another language? Bellek detects the page language automatically and translates any word into your chosen native language. Reading a Japanese blog and need it in Turkish? Browsing a Spanish article and want it in German? Set your native language once and Bellek handles the rest.

Supports 20 languages including Turkish, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Japanese, Korean, Hindi, Chinese, Dutch, Polish, Swedish, Thai, Ukrainian, Vietnamese, and Indonesian.

🧠 FLASHCARDS, QUIZZES & SPACED REPETITION

This vocabulary builder doesn't just save words, it helps you actually learn them. Study with flashcards using spaced repetition, test yourself with multiple choice quizzes, or focus on your weak spots with smart review. Track your streak and mastery level for every word. Built for real vocabulary retention, not just word collecting.

📂 ORGANIZE YOUR VOCABULARY

Group words into collections by topic, project, or language. Filter, sort, and search across everything in your vocabulary builder. Import word lists from CSV or export anytime. One vocabulary builder system instead of scattered notes, screenshots, and forgotten bookmarks.

📱 STUDY ON THE GO

Scan the QR code from your extension to open bellek.app on your phone. Review flashcards and study your saved vocabulary on the bus, in a waiting room, or between classes. iOS and Android apps coming soon!

🔒 PRIVATE & LOCAL-FIRST

Your data is stored locally in your browser. No account required, no sign-up, no tracking.

💡 NON-INTRUSIVE DESIGN

Turn the definition popup on or off anytime from the extension icon. Bellek stays out of your way when you don't need it.

💎 FREE VOCABULARY BUILDER

- 30 saved words
- 3 collections
- Unlimited flashcards
- 3 translations per day
- CSV import & export

💎 PREMIUM VOCABULARY BUILDER (7-day free trial)

- Unlimited saved words
- Unlimited collections
- Unlimited translations
- Multiple choice quizzes
- Smart review with spaced repetition

🎯 BUILT FOR

- Anyone who wants to express themselves better
- English (ESL / EFL) learners building everyday vocabulary
- Language learners studying English, French, Spanish, German, Turkish, Japanese, and 14 more languages
- Students preparing for IELTS, TOEFL, GRE, or university exams who need flashcards and spaced repetition
- Avid readers who want to learn new words
- Anyone tired of forgetting the words they look up

What's New in 1.4.2

Guided onboarding tour — New users now get a walkthrough of the dashboard, so you can start building your vocabulary faster from day one.

Source deep links — When you tap "source" on any saved word, you'll jump straight to the exact sentence on the original page where you learned it. (Thanks JeanT!)

🎬 YouTube subtitle lookup (Premium) — Look up any word directly from YouTube subtitles.

📄 Right-click lookup now works in PDFs

Fixed compatibility issues with Brave browser flagged by our users (Thanks LS!)

Bug fixes & polish — Squashed a double-tap bug, and smoothed out several rough edges across the board.