Javascript Beautifier

Prettify, format, and un-minify messy or minified JavaScript and TypeScript code into clean, readable code with proper indentation, brace formatting, and line breaks.

Why Use This Tool?

• Un-minify Production JS Code: Format minified single-line JavaScript files from browser developer tools or production bundles.
• Code Readability: Clean up messy JavaScript code before code reviews.
• TypeScript Support: Prettify both JavaScript (ES6+) and TypeScript files.

How to Use

1. Paste minified or messy JavaScript code into the editor.
2. Select Indentation (2 spaces, 4 spaces, or tab).
3. Click "Beautify JavaScript" and copy formatted code.

Real Working Example

Input:

Minified JS: function add(a,b){return a+b;}console.log(add(2,3));

Output Result:

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

console.log(add(2, 3));

Important Technical Details & Specifications

• js-beautify AST Engine: Powered by `js-beautify` library for accurate JavaScript AST formatting.
• Preserves Comments & Strings: Preserves inline comments, block comments, template literals, and regex patterns.
• Local Memory Execution: Zero network overhead.

Related Developer Tools

• JS Minifier: Minify JavaScript code.
• SQL Formatter: Format SQL queries.
• JSON Formatter: Format JSON strings.