JavaScript-Java Bridge

Name: JavaScript-Java Bridge
Rating: 4.2857 (21 reviews)
Author: Advanced Machine Controls

A replacement for the Java Plugin so Java Applets without graphics continue to work on browsers that no longer support NPAPI plugins. Java's LiveConnect API is emulated — data & method calls can be exchanged, and Java can manipulate the webpage DOM.

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Features & Capabilities

JavaScript-Java Bridge is a Firefox extension and Java library designed to replace the deprecated Java Plugin, enabling Java Applets without graphics to work in browsers that no longer support NPAPI plugins. It emulates Java's LiveConnect API, allowing bidirectional data and method exchange between Java and JavaScript, including DOM manipulation from Java code.

This extension offers an efficient alternative to rewriting Java Applets as backend APIs communicating via AJAX or modern frameworks. It maintains the remote procedure call and remote DOM manipulation paradigm, simplifying synchronization between frontend and backend. Licensed under the DevWheels Licence, it supports free use for testing and development, with a licensing fee for production installations. Developers are encouraged to contribute enhancements to the main project for collaborative improvement.

User Growth & Download Statistics

Add-on Developer Tools Programming

By:

Advanced Machine Controls

Daily users:

27,819 258

Rating:

4.29

(21)

Version:

1.82 Last updated: 2026-04-08

Version code:

6187847

Creation date:

2019-03-01

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

22.48KB

Email:

js*****@advancedcontrols.com.au

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-15

Compare stats and ranking:

Ranking

# 434 ▲ 3

Other rankings

#36 in Web Development

#3 in javascript keyword 45

#10 in script keyword 28

#31 in continue keyword 9 ▼ 1

#65 in scrape keyword 54 ▼ 1

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Other platforms

JavaScript-Java Bridge (v1.81)

10,000 1.00

(2)

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:

Advanced Machine Controls

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/javascript-java-bridge/

Email:

js*****@advancedcontrols.com.au

Website:

https://github.com/mrj/jsjbridge

Permission Change History

2026-04-09: Version 1.81 → 1.82

Add Optional permissions: <all_urls>

User Reviews

Several reviews indicate that the JavaScript-Java Bridge add-on does not function properly, with users reporting that it 'DOES NOT WORK.' Additionally, there are repeated posts containing promotional content and links not directly relevant to the add-on's functionality, suggesting possible spamming or irrelevant comments rather than substantive feedback.

Pros

Cons

Does not work as expected or is non-functional

Recent reviews

by 退出*****, 2025-03-27

by 远离*****, 2025-02-12

DOES NOT WORK ?????

by Fi*****, 2024-02-07

View all user reviews ›

Is JavaScript-Java Bridge 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.

JavaScript-Java Bridge requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Medium *********** ************* ******* ********** *** ****** ************* ******* *** **** ** ******* **********

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.

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

Risk likelihood analysis details

Medium This extension was updated in the past 3 months. New updates may not be stable or safe.
Medium **** ********* *** ****** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******