JSDefender

JSDefender

PreEmptive
+

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About

JS-Confuser is a powerful, open source JavaScript obfuscation tool that transforms your source code into a highly unreadable form, deterring reverse engineering, tampering, and unauthorized reuse while preserving full functionality. It offers multiple obfuscation techniques, including variable renaming, control flow flattening, string concealing, and function obfuscation, along with locks such as domain-based or date-based execution constraints and integrity checks to detect runtime modifications. Designed for flexibility, it provides obfuscation presets, ranging from 10 to 21+ transformation layers, and also allows fully customizable configurations to suit performance and protection needs. The tool operates entirely in the browser for fast, private obfuscation workflows, and includes advanced tooling features such as a playground for interactive experimentation, customizable options via JavaScript, integrated code prettification, and debugging support.

About

Cutting-edge JavaScript obfuscation techniques with control-flow flattening, tamper detection and other in-app protection transforms. We would not send our own unprotected code to a remote service controlled by third parties and we would not expect you to either. JSDefender supports major JavaScript frameworks, runtimes, and bundlers including Angular, Node, React, React Native, Webpack and others. Unlike languages like .NET and Java that are compiled to intermediate, stack-based assembly instructions before being distributed in binary form, JavaScript apps are typically distributed in source form. This means that your code is directly visible to anyone with access to the execution environment (like a browser). So, potential attackers can very easily step through the running code using a debugger built into their browser, or use other tools to statically analyze the code for vulnerabilities.

About

JavaScript is a scripting language and programming language for the web that enables developers to build dynamic elements on the web. Over 97% of the websites in the world use client-side JavaScript. JavaScript is one of the most important scripting languages on the web. Strings in JavaScript are contained within a pair of either single quotation marks '' or double quotation marks "". Both quotes represent Strings but be sure to choose one and STICK WITH IT. If you start with a single quote, you need to end with a single quote. There are pros and cons to using both IE single quotes tend to make it easier to write HTML within Javascript as you don’t have to escape the line with a double quote. Let’s say you’re trying to use quotation marks inside a string. You’ll need to use opposite quotation marks inside and outside of JavaScript single or double quotes.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers and teams wanting a tool to secure their JavaScript by transforming it into heavily obfuscated, self-defending code

Audience

IT teams in need of a professional-grade Application Protection solution

Audience

Web developers and anyone looking for a mobile solution for running and developing web content

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

JS-Confuser
United States
js-confuser.com

Company Information

PreEmptive
Founded: 1996
United States
www.preemptive.com/products/jsdefender/

Company Information

JavaScript
Founded: 1995
United States
javascript.com

Alternatives

Alternatives

Alternatives

AssemblyScript

AssemblyScript

The AssemblyScript Project
Dotfuscator

Dotfuscator

PreEmptive
BlueClosure

BlueClosure

Minded Security
BlueClosure

BlueClosure

Minded Security
DashO

DashO

PreEmptive

Categories

Categories

Categories

Integrations

Agentplace
AppMap
Bedrock
BypassCaptcha.com
Claude Opus 4.1
CodeSession
Codesphere
Coframe
CudaText
Ditto
EasyWeek
Loopple
MULTI IDE
Ona
OpenReplay
PouchDB
Scout
VSCodium
Voiceflow
eXTReMe-IP-Lookup

Integrations

Agentplace
AppMap
Bedrock
BypassCaptcha.com
Claude Opus 4.1
CodeSession
Codesphere
Coframe
CudaText
Ditto
EasyWeek
Loopple
MULTI IDE
Ona
OpenReplay
PouchDB
Scout
VSCodium
Voiceflow
eXTReMe-IP-Lookup

Integrations

Agentplace
AppMap
Bedrock
BypassCaptcha.com
Claude Opus 4.1
CodeSession
Codesphere
Coframe
CudaText
Ditto
EasyWeek
Loopple
MULTI IDE
Ona
OpenReplay
PouchDB
Scout
VSCodium
Voiceflow
eXTReMe-IP-Lookup
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