JavaScript Formatter

Format, prettify, and minify JavaScript code. Supports ES6+ and TypeScript syntax.

Input
Paste your JavaScript code
Output
Formatted JavaScript

JavaScript Formatter

This tool formats and beautifies JavaScript code to make it readable and maintainable. It also supports TypeScript syntax.

Features

Format/Prettify

Converts minified or messy JavaScript into well-structured, readable code with proper indentation and line breaks.

Minify

Removes all unnecessary whitespace and comments to reduce file size for production.

Formatting Options

Indent Size

Choose between 2 or 4 spaces for indentation.

Brace Style

  • Collapse - Opening brace on same line
  • Expand - Opening brace on new line
  • End-Expand - Closing brace on new line

Best Practices

Code Readability

  • Use consistent indentation
  • Add spaces around operators
  • Break long lines appropriately
  • Use meaningful variable names

Performance

  • Minify JavaScript for production
  • Keep source files formatted for development
  • Use source maps to debug minified code

Example

Before:

function add(a,b){return a+b;}const greet=(name)=>{console.log("Hello, "+name);}

After:

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

const greet = (name) => {
  console.log("Hello, " + name);
}