Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of HighVocab: Vocabulary Builder

HighVocab: Vocabulary Builder by Sun-J

HighVocab vocabulary builder: highlights, translation, flashcards, quiz. Perfect for IELTS, TOEFL, GRE, and academic learners.

5 (2 reviews)5 (2 reviews)
13 Users13 Users
You'll need Firefox to use this extension
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
Choose Vocabulary packsAccess Your Vocab and Phrase Lists Anytime, Anywhere
About this extension
Whether you're studying for IELTS, TOEFL, GRE, or just want to level up your academic, intermediate, or advanced vocabulary, HighVocab makes it easy and fun.

🧩 Choose Word Packs by Goal (Like IELTS or TOEFL)
Pick word collections like “Common 1”, “Academic”, or “IELTS Prep” to focus on the vocabulary you need.

📘 Smart Word Highlights
Saved words get highlighted on any page. Hover to see meaning, pronunciation, and examples instantly.

✨ One-Click Word Saving
Click any word or phrase to translate and save it with examples and audio.

🧠 Interactive Flashcards & Quizzes
Review your saved words with flashcards and quizzes to remember faster.

🔄 AI Sentence Rephrasing
Improve your writing! Paste a sentence and get smart suggestions using your saved words.

🌍 Instant Translation
Translate any word into your native language on the spot.

📅 Word of the Day + Reminders
Learn one useful word every day and track your progress.

🖼️ Image Support for Words
Boost memory with pictures that match your vocabulary.

📊 Personal Dashboard
See how many words you've mastered and track improvement.

📤 Export Your Words
Download your list anytime (CSV format) for studying or sharing

Start learning smarter with HighVocab. Perfect for exam prep, reading practice, or everyday language growth.

Download now and learn while you browse!
Rated 5 by 2 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
2
4
0
3
0
2
0
1
0
Read all 2 reviews
Permissions and dataLearn more

Required permissions:

  • Access your data for all websites

Optional permissions:

  • Access your data for all websites
More information
Add-on Links
  • Support site
  • Support Email
Version
1.6.0
Size
1.56 MB
Last updated
17 days ago (Jul 29, 2025)
Related Categories
  • Language Support
License
All Rights Reserved
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Add to collection
Report this add-on
Release notes for 1.6.0
Hello, we've made UI/UX updates.

Here is the test account:
username: info@highvocab.com
password: 123456

Thanks
More extensions by Sun-J
  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.