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

Language Annotator by KL

Highlight, save, translate, and review vocabulary while browsing the web.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
Highlight and annotate words in any language to learn them.

Language Annotator is a Chrome extension designed to enrich the language learning experience for learners, readers, and the innately curious. It effortlessly integrates new vocabulary learning and contextual translation into your web browsing experience. Whether you're delving into a new language or aiming to broaden your existing vocabulary, Language Annotator provides an efficient, seamless way to achieve your goals.

Key Features:

Word Highlighting: Automatically highlights words you've previously marked as learning targets, offering instant recognition and recall as you navigate the web.

Add Words Instantly: Encounter a new word? Right-click to add it directly to your personal vocabulary list, with options for adding your own definitions or memorable notes.

Contextual Learning & Translation: Beyond remembering words, understand them. Language Annotator not only helps you see words in their natural context but now also offers instant translation of selected text into your browser's default language, enhancing both comprehension and retention.

Automatic Translation: Newly added, the automatic translation feature instantly displays translations in a non-intrusive overlay when you select text. Tailored to your browser's language settings, it's designed to support a wide range of languages, ensuring understanding is just a selection away.

Sync Across Devices: Your vocabulary and learning progress are always with you, synced across all your devices. Learn on the go—whether you're transitioning from your laptop at a café to your phone in transit, your learning journey continues uninterrupted.

Embrace an enriched learning experience with Language Annotator—your companion for exploring new languages and enhancing your vocabulary, one click at a time.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for all web sites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support site
  • Support Email
Version
1.3.2
Size
95.18 kB
Last updated
2 days ago (2 Mar 2026)
Related Categories
  • Language Support
Licence
Mozilla Public Licence 2.0
Version History
  • See all versions
Tags
  • scholar
  • translate
Add to collection
Report this add-on
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 Licence v3.0 or any later version.