JavaScript Beautifier

JavaScript Beautifier & Formatter

Transform minified, compressed, or messy JavaScript code into beautifully formatted, human-readable code with proper indentation, spacing, and structure.

What is JavaScript Beautification?

JavaScript beautification (also called formatting or pretty-printing) reorganizes your JS code to make it easier to read, understand, and maintain while preserving all functionality.

Features

• Smart Indentation - Automatically indents code blocks, functions, and objects
• Brace Formatting - Consistent placement of curly braces
• Line Breaks - Adds appropriate line breaks for readability
• Operator Spacing - Adds spaces around operators
• Comment Preservation - Keeps all comments intact
• String Safety - Preserves string literals exactly

Use Cases

• Debug Minified JavaScript - Make compressed JS readable for debugging
• Code Review - Format code before submitting for review
• Reverse Engineering - Understand third-party minified scripts
• Learning - Study JavaScript structure with formatted code
• Clean Up - Format auto-generated or copied code

Formatting Options

• Indent size (2 spaces, 4 spaces, tabs)
• Brace style (same line, new line, Allman)
• Preserve empty lines
• Maximum line length
• Semicolon insertion

Before & After Example

Before (Minified):

function add(a,b){return a+b}const result=add(5,3);console.log(result);

After (Beautified):

function add(a, b) {
    return a + b;
}

const result = add(5, 3);
console.log(result);

All formatting is performed locally in your browser for privacy and security.