JSDefender

JSDefender

PreEmptive
+
+

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About

EdgeComet is an open source middleware solution designed to make JavaScript-heavy websites fully visible to search engines and AI crawlers by rendering dynamic content into static HTML that bots can understand. It sits behind a reverse proxy and selectively intercepts bot traffic, executing JavaScript through a headless Chrome rendering service and delivering fully rendered pages instead of empty client-side shells. This approach addresses the core limitation where crawlers cannot execute JavaScript, leaving content from frameworks like React, Vue, or Angular effectively invisible. EdgeComet works through a three-step pipeline, rendering dynamic pages, caching the generated HTML for fast reuse, and scaling delivery through a distributed architecture with millisecond response times. It includes advanced bot detection with over 20 predefined crawler patterns, flexible routing rules, and device-specific rendering for mobile or desktop indexing.

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.

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

SEO-focused developers and companies running JavaScript-heavy websites who need to make their content visible to search engines and AI crawlers without rewriting their frontend

Audience

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

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

No information available.
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

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

Company Information

EdgeComet
United States
edgecomet.com

Company Information

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

Alternatives

Alternatives

Dotfuscator

Dotfuscator

PreEmptive
eViewer

eViewer

MS Technology
DashO

DashO

PreEmptive
BlueClosure

BlueClosure

Minded Security

Categories

Categories

Integrations

Angular
JavaScript
React
ChatGPT
GitHub
Google AI Mode
Google Chrome
HTML
Node.js
Perplexity
React Native
Redis
Vue.js

Integrations

Angular
JavaScript
React
ChatGPT
GitHub
Google AI Mode
Google Chrome
HTML
Node.js
Perplexity
React Native
Redis
Vue.js
Claim EdgeComet and update features and information
Claim EdgeComet and update features and information
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