Firefox Browser Add-ons

Extensions
Themes
- for Firefox
- Dictionaries & Language Packs
- Other Browser Sites
- Add-ons for Android

Search

Japanese Language Pack by Firefox

Japanese Language Pack

4.2 (128 reviews)4.2 (128 reviews)

302,046 Users302,046 Users

Download Firefox and get the extension

Extension Metadata

Rated 4.2 by 128 reviewers

Log in to rate this language pack

There are no ratings yet

Star rating saved

Read all 128 reviews

More information

Add-on Links: Copy add-on ID
Version: 152.0.20260603.90317
Size: 513.13 kB
Last updated: 2 hours ago (3 Jun 2026)
Licence: Mozilla Public Licence 2.0
Version History: See all versions
Add to collection

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.

Change language