JavaScript Beautifier

Deobfuscate and Organize Your Code

Reading minified or messy JavaScript is nearly impossible. Our JavaScript Beautifier solves this by parsing your code and applying professional formatting standards instantly. It restores structure, fixes indentation, and separates logic blocks, allowing you to debug scripts or review third-party code with ease.

Unlike server-side tools that require you to upload your scripts, this tool runs 100% in your web browser. This ensures maximum privacy for your proprietary code while delivering zero-latency results. Whether you are unminifying a library to see how it works or cleaning up a quick prototype, this tool provides the clarity you need.

How to Format JavaScript

1. Paste: Copy your minified or unformatted JS string into the input box above.
2. Configure: Select your preferred indentation (2 spaces, 4 spaces, or tabs).
3. Beautify: Click "Beautify JS" to restructure the code instantly.
4. Use: Copy the output to your clipboard for use in your IDE or debugger.

Frequently Asked Questions

What is a JavaScript beautifier?

A JavaScript beautifier is a developer utility that converts condensed (minified) or disorganized code into a human-readable format. It systematically adds line breaks, whitespaces, and indentation to reveal the logical structure of the script.

How do you make JavaScript code readable?

The most efficient way is to use an automated formatter. By applying consistent syntax highlighting and indentation rules, tools like this turn "spaghetti code" into structured logic, making it easier to trace variables and functions.

How do I format JS code in VS Code?

In Visual Studio Code, you can format your active file by pressing Shift + Alt + F (Windows) or Shift + Option + F (Mac). For this to work efficiently, ensuring you have a default formatter (like Prettier) installed is recommended.

What is the difference between minify and beautify?

Minification is the process of removing all unnecessary characters (whitespace, comments) to make the file size smaller for computers to read quickly. Beautification is the exact opposite: it adds these characters back to make the code easier for humans to read.

Is there an online tool to deobfuscate JavaScript?

Yes. While heavy obfuscation requires specialized decryption, a JavaScript Beautifier acts as the first layer of deobfuscation by expanding the layout. This allows developers to see the variable names and control flow, which is the first step in reverse engineering or debugging complex scripts.