Joshi Koukousei Captcha Service

Name: Joshi Koukousei Captcha Service
Rating: 3.5854 (41 reviews)
Author: araragi-coomtech

Tired of solving captchas all day? Don't want carpal tunnel syndrome young? Have dyslexia? Then Joshi Koukousei's Captcha Service is here for you! Using a small machine learning model, JKCS saves you time by solving 4chan captchas for you!

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Features & Capabilities

Joshi Koukousei Captcha Service is a Chrome extension designed to save you time and effort by automatically solving 4chan captchas. Ideal for users who dislike repetitive captcha entry, suffer from dyslexia, or want to avoid wrist strain like carpal tunnel syndrome. This extension employs a small machine learning model to efficiently handle captchas on your behalf.

Keep updated with the latest versions via the official repository to ensure continued support and performance. Experience a hassle-free browsing experience while navigating 4chan and similar sites with ease.

User Growth & Download Statistics

Add-on AI Accessibility

By:

Daily users:

Rating:

Version:

0.61 Last updated: 2023-09-06

Version code:

5619697

Creation date:

2022-08-04

Risk:

Permissions:

https://*.4chan.org/*
https://*.4channel.org/*
https://sys.4chan.org/*

Content scripts matches:

*.4chan.org
*.4channel.org
sys.4chan.org

Size:

2.40MB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-21

Compare stats and ranking:

Ranking

# 5,145 ▼ 8

Other rankings

#4 in tunneling keyword 45

#7 in service keyword 46

#109 in house keyword 4 ▲ 1

#134 in mouse keyword 64 ▼ 2

#138 in machine keyword 30 ▲ 1

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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:

araragi-coomtech

Firefox Add-ons Store

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

Website:

https://git.coom.tech/araragi/JKCS

User Reviews

The 'Joshi Koukousei Captcha Service' Firefox add-on is praised for effectively autofilling captchas and being a useful tool when operational. However, it often becomes broken or unreliable following captcha system updates, leading to broken autofill functions and user frustration. Despite these intermittent issues, updates have periodically restored its functionality. Overall, users find it innovative and valuable but are critical of its inconsistent performance and the need for more timely fixes.

Pros

When functioning, the add-on works perfectly and autofills captchas effectively.
It is considered a lifesaver by some users for bypassing captchas.
The add-on has been updated and restored to working condition multiple times.
Users appreciate the innovative nature of the tool for handling captchas.
Provides good support for specific captcha types like sliders.

Cons

The add-on frequently breaks and stops working due to updates or changes in captchas.
Autofill feature often fails while some captcha elements like sliders may still work.
Users report prolonged periods of malfunction before fixes are released.
The add-on is dependent on timely updates which seem to lag behind captcha changes.
Multiple users have expressed frustration over its unreliability at times.

Recent reviews

by Fi*****, 2025-03-07

This is a coal extension.

by Ca*****, 2024-12-24

by Zo*****, 2024-11-27

View all user reviews ›

Is Joshi Koukousei Captcha Service 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.

Joshi Koukousei Captcha Service requires very minimum permissions.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
Low ******* ****** ** *** ********* ******** ********** ************

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.

Joshi Koukousei Captcha Service has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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