KBChan

Name: KBChan
Author: KanjiBreakdown

Companion to KanjiBreakdown Web and Windows Apps Study with Native Japanese Subtitles in any of your favorite streaming services including Crunchyroll, Netflix, Amazon Prime Video, and more.

Overview

Firefox Add-ons Store

Daily users

19 ▲ 2

Data as of 2026-09-08

Version:

0.11

Last updated: 2026-08-27

Features & Capabilities

Companion to KanjiBreakdown Web and Windows Apps. Learn Japanese by adding selectable Japanese subtitles to videos on Crunchyroll, Netflix, Prime, YouTube, and more. Connects with KanjiBreakdown Desktop App and KanjiBreakdown.com to show popup sentence and kanji breakdowns with dictionary definitions, recommended learning order, personal memory aids, shared mnemonic stories, and add items to your SRS learning lists, review known items and more! Learn Japanese with native content and optimized efficient self learning!

Will automatically use Japanese subtitles from the current stream when available, or you can automatically search for Japanese subtitles matching your content or even drag and drop your own custom subtitle files.

Subtitle sidebar support:

Crunchyroll Netflix Amazon Prime Video Stremio Web local video files in your browser

Subtitles only support:

YouTube

User Growth & Download Statistics

Add-on

By:

KanjiBreakdown

Daily users:

19 2

Version:

0.11 Last updated: 2026-08-27

Version code:

6443290

Creation date:

2025-11-14

Firefox add-on GUID:

kb-daishi-d2h5e@kanjibreakdown.com

Firefox add-on numeric ID:

2956101

Weekly download count:

Firefox on Android:

Risk:

Permissions:

Host permissions:

https://www.kanjibreakdown.com/*
<all_urls>
ws://localhost:12654/
file:///*
https://jimaku.cc/*

Content scripts matches:

<all_urls>
*.stremio.com
*.youtube.com
*.primevideo.com
*.netflix.com
*.crunchyroll.com

Size:

54.08MB

Email:

ka*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-09-08

Compare stats and ranking:

Ranking

# 25,138 ▲ 972

Other rankings

#177 in prime keyword 34 ▲ 9

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

KanjiBreakdown

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/kbchan/

Email:

ka*****@gmail.com

Website:

https://www.kanjibreakdown.com/

Permission Change History

2026-08-28: Version 0.10 → 0.11

Add Permissions: tabs

Is KBChan Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

KBChan requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

KBChan is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****