Firefox Browser Add-ons
Log in
Preview of Yomitan

Yomitan by Darius Jahandarie

Powerful and versatile pop-up dictionary for language learning used by 100,000+ language learners.

4.9 (69 reviews)4.9 (69 reviews)
19,698 Users19,698 Users
You’ll need Firefox to use this extension
Download Firefox
Download file

Extension Metadata

Screenshots
Looking up a Japanese word by hovering over itLooking up a kanji character by hovering over itLooking up an English word by directly searching it
About this extension
Yomitan helps you to decipher texts in 20+ languages which would be otherwise too difficult tackle.

Yomitan provides powerful features not available in other browser-based dictionaries:
💬 Interactive popup window for displaying dictionary definitions.
🔍 Search page for easily looking up words.
🌎 Support for more than 20 languages ranging from Japanese to Spanish to Arabic.
🔊 Play native pronunciation audio from multiple sources with the ability to add your own custom audio sources.
📝 Automatic flashcard creation for the Anki flashcard program via the AnkiConnect plugin.
📚 Add multiple dictionaries from recommended and custom sources. Slang, kanji, and pronunciation dictionaries. There are thousands of available dictionaries online
☁️ Works fully offline. No internet connection needed.
💲 Completely free and open-source.
🛡️ Privacy-conscious: we transmit only the minimum amount required of data outside of the extension by default (i.e., we only transmit the single word you are looking up if and only if you click the audio playback button on it). All data transmission is configurable. More information is available in our privacy policy.

More info: Yomitan Wiki
Rated 4.9 by 69 reviewers
Sign in to rate this extension
There are no ratings yet

Star rating saved

5
66
4
1
3
0
2
0
1
2
Read all 69 reviews
Permissions and dataLearn more

Required permissions:

  • Input data to the clipboard
  • Block content on any page
  • Access your data for all websites

Optional permissions:

  • Exchange messages with programs other than Firefox
  • Get data from the clipboard
  • Access your data for all websites
More information
Add-on Links
  • Homepage
  • Support site
Version
25.6.3.0
Size
14.75 MB
Last updated
2 months ago (Jun 9, 2025)
Related Categories
  • Appearance
  • Language Support
License
GNU General Public License v3.0 only
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Add to collection
Report this add-on
More extensions by Darius Jahandarie
  • 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.