Online JavaScript Code Obfuscation Tool - JS Code Encryption, Compression, Improved Security

This free online JavaScript code obfuscation tool supports variable name obfuscation, string encryption, code compression, and structure complexity, significantly improving the security of JS source code and preventing front-end source code from being directly copied or easily parsed. Built on the open-source javascript-obfuscator technology, this tool is suitable for a variety of scenarios, including front-end source code protection, web application deployment, and third-party plugin distribution. It's easy to use and requires no installation, allowing for one-click installation.

Inspiration

Front-end source code is loaded in plain text in the browser, making it extremely vulnerable to copying and reverse engineering. To address developer needs for front-end source code protection, JS file encryption and obfuscation, and integrated online code compression and obfuscation, this tool leverages the proven javascript-obfuscator technology to integrate obfuscation, compression, variable renaming, and string encryption, helping developers quickly improve source code security.

How to Use

1. Paste the .js file to be obfuscated in the input box at the top of the page.

2. Keep the default settings (variable name obfuscation, string encryption, code compression, and structure complexity all checked), or uncheck/adjust options as needed.

3. Click "Obfuscate Code" and the system will automatically generate the obfuscated JavaScript code in the input box below.

4. Copy and replace it in your project. After confirming functionality and compatibility in a test environment, deploy to a production environment.

Application Scenarios

• Front-end Source Code Protection: Obfuscate and compress core JS files before launching a website or application to prevent direct source code viewing.

• Third-party Plugin and Component Distribution: When releasing closed-source JS plugins, reduce the risk of copying through variable renaming and string encryption.

• SaaS and Web Service Scripts: Suitable for script protection embedded in customer pages, reducing the possibility of reverse engineering and abuse.

Implementation Principle

• The underlying implementation is based on the mature open-source javascript-obfuscator technology

Frequently Asked Questions (FAQ)

1. Can the obfuscated code be restored?

   Restoration cannot be completely avoided, but it will greatly increase the difficulty of reverse engineering and reading. It is recommended that sensitive logic be processed in the backend.

2. Will this affect performance or compatibility?

   Some high-intensity obfuscation (such as control flow deformation) may incur performance overhead. We recommend evaluating this in a test environment first.

3. How can I ensure proper functionality after obfuscation?

   Before deployment, regression testing should be performed in a development environment to confirm compatibility with third-party libraries.

4. Is there a fee?

   No, this tool is permanently free and its core is based on open source technology.