Add to Chrome — it's free
Contextual highlighting
Words are emphasised on the page based on how much attention you want to give them — right where you encounter them.
Chrome extension · Free
Learn English vocabulary while you browse
Vocab Lab turns everyday web pages into an interactive vocabulary lesson. Click any word to see its meaning, pronunciation, audio, usage examples, and Vietnamese translation — right where you read.
Works on any English web page. No account setup required to start.
- Contextual definitions
- Pronunciation & audio
- Vietnamese meaning
- Remembers your words
Three steps to build your vocabulary
No flashcards, no separate app. Learn in the flow of your normal reading.
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1
Install & sign in
Add Vocab Lab to Chrome and sign in. It quietly gets to work on the English pages you already read.
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2
Click any word
Eligible words become clickable. Tap one to open a compact card with its definition, pronunciation, audio, examples, and Vietnamese meaning.
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3
Mark your progress
Tell Vocab Lab how much attention a word needs. It remembers your choice and reuses it across every page you visit.
Everything you need, in context
Pronunciation & audio
Hear how a word sounds and see its phonetic pronunciation so you can say it with confidence.
Vietnamese meaning
Built for Vietnamese learners: each word can show a clear English-to-Vietnamese translation alongside examples.
Remembers your words
Your familiarity with each word is saved and reused across pages, so learning compounds as you read.
Real usage examples
See words used in real sentences to understand meaning and context — not just a dry dictionary entry.
Per-site control
Turn Vocab Lab on or off for any site, so it works only where you want it to.
See Vocab Lab in action
Placeholders below — real product images can drop straight in.
Who it's for
Made for real-world English learners
Whether you're reading news, docs, or research, Vocab Lab helps you notice, understand, and remember new words without breaking your flow.
- Vietnamese speakers learning English
- Students reading English articles and papers
- Professionals working in English every day
- Anyone who wants to grow vocabulary passively
Start learning on the pages you already read
Add Vocab Lab to Chrome and turn browsing into progress.
Add to Chrome — it's freeFrequently asked questions
Is Vocab Lab free?
Yes. Vocab Lab is free to install from the Chrome Web Store.
Which browsers are supported?
Vocab Lab is a Chrome extension built on Manifest V3, so it works in Google Chrome and Chromium-based browsers that support Chrome extensions.
Does it work on every website?
It works on English web pages. Some structural elements and non-English pages are skipped, and you can enable or disable Vocab Lab per site.
Do I need an account?
You sign in to sync your learned words across pages and devices. Your word progress is saved so learning carries over as you read.
Does it support Vietnamese?
Yes. Vocab Lab can show an English-to-Vietnamese translation for words, alongside definitions and examples.