Developer Tools

Beautify JavaScript Online for Free

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Ubify Intelligence Team

EDITORIAL TEAM

~1 min read

~196 words

VERIFIED JUNE 2026

About This Tool

The JavaScript Beautifier formats complex or minified JS code into a structured, readable format — essential for developers debugging scripts or learning from third-party libraries. It applies consistent indentation and spacing while maintaining the original logic and execution flow. This tool is completely free, secure, and processes everything locally on your device.

How to Use

1
Paste your JavaScript code into the input editor.
2
Click Beautify to apply indentation and line breaks, or Minify to compress the code.
3
Review the formatted output — all logic and execution flow remain unchanged.
4
Copy the result or download it as a .js file for your project.

Frequently Asked Questions

Does this JavaScript beautifier support ES6 and modern syntax?

Yes. It handles ESNext, arrow functions, destructuring, async/await, and all modern JavaScript.

Can I use this to unminify third-party JavaScript?

Yes. Paste any minified JS and click Beautify to get a readable, indented version.

Is my JavaScript code safe when I paste it here?

Yes. Processing happens entirely in your browser — your code is never sent to a server.

Why should I beautify my JavaScript?

Beautifying makes code understandable for humans, which is critical for code reviews, debugging, and maintaining long-term projects.