websights JavaScript Protection | Jscrambler

JavaScript Protection

Protect your JavaScript with polymorphic obfuscation, code locks, and self-defensive capabilities to prevent code theft, abuse, and tampering.

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Reducing Your App’s Attack Surface

JavaScript powers the whole web

JavaScript enables companies, from startups to enterprises, to develop highly advanced web, mobile, and desktop apps in record time.

Attacks targeting JS are growing

Because JavaScript/HTML5 can’t be feasibly encrypted and often has to run on the client-side, it can be targeted by attackers and increase the attack surface.

A key business threat

Exposed JavaScript/HTML5 leads to attacks such as automated abuse, piracy, intellectual property theft and data leakage.
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Security From Day One

Protect Your Investment

Protect important algorithms that are vital to your competitive advantage and prevent competitors from retrieving and redistributing them.

Reduce The Attack Surface

Minimize your exposure to data breaches and to attacks that use exposed code as a vector for capturing credentials and sensitive data.

Secure Your Revenue Streams

Prevent attackers from bypassing restrictions or abusing your app to unlock illegitimate benefits that can greatly hurt your business model.

How Jscrambler Protects Javascript Apps

Polymorphic JavaScript Obfuscation

Each time you protect your JavaScript code with Jscrambler, you get a new highly protected version that conceals any important logic while keeping the original functionality.

Runtime Protection

Your application will detect debugging and tampering attempts, derailing execution to prevent attackers from analyzing or modifying your code at runtime
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JavaScript Code Locks

You can lock your code to only run in specific domains, OSes, browsers and date ranges. Any lock violation will break the app.


You can trigger automatic reactions to thwart attacks, such as redirecting the attacker, getting a real-time notification or calling a custom function.

Addressing Application Security Standards

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Protect your source code

Conceal and protect your source code with resilient obfuscation, environment checks, and runtime protection, preventing tampering, poisoning, and reverse engineering.
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Maximize your app's resilience

Meet all the required resilience controls for mobile apps outlined in OWASP MASVS-R and recommended by Gartner, whether they are fully native apps or hybrid mobile apps.
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Breaking Barriers in Application Security

Recognized By The Industry

Our technology is recognized by Gartner on the Market Guides for ln-App Protection and Online Fraud Detection, and the Hype Cycle for Application Security. Jscrambler is also recognized by Deloitte as one of EMEA's fastest-growing tech companies.
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Unmatched Capabilities

Jscrambler Code Integrity has the largest and most powerful set of JavaScript code transformations, many of which are unique, like Jscrambler’s Control Flow Flattening and Self-Healing. It also includes features that minimize performance hits.

Mature Technology

Our sophisticated testing process ensures every new feature is compatible with all browsers, JS frameworks, and libraries. If a single test fails, our build fails. Unlike other tools, Jscrambler will never break your code or add malware.

Browser compatibility

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Check Jscrambler's compatibility with major browsers

Framework compatibility

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Check Jscrambler's compatibility with major frameworks

Endorsed by Industry Leaders


Jscrambler's technology is trusted by companies listed among the Fortune 500, top 20 banks, and top 5 OTT providers.


Our business partners include GitLab, PCI SSC, Verimatrix, Zimperium, Intertrust, and FriendMTS.

Test our protection features in your own code.

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Projeto Co-Financiado por (Mais info)Norte 2020, Portugal 2020, FEDR