JavaScript Beautifier

Format and beautify JavaScript code with customizable options

Input JavaScript
Enter or paste your JavaScript code

193 characters

Quick Examples
Statistics

0

Input Bytes

0

Output Bytes

0

Lines

Output JavaScript
Beautified JavaScript result
Before & After

Minified → Beautified:

Before:

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

After (2 spaces):

function add(a, b) {
  return a + b;
}
Use Cases
  • • Format minified JavaScript
  • • Improve code readability
  • • Debug JavaScript code
  • • Clean up generated code
  • • Prepare code for documentation
  • • Standardize coding style
  • • Code review preparation
  • • Learn JavaScript formatting
Features
  • • 4 indentation styles
  • • Operator spacing control
  • • Automatic semicolon insertion
  • • Brace formatting
  • • String preservation
  • • Comment preservation
  • • Copy formatted output
  • • Download as .js file
  • • Quick example templates
  • • Statistics display
Tips
  • • Use 2 spaces for web standards
  • • Enable operator spacing for clarity
  • • Use consistent quote style
  • • Test output before using
  • • Validate syntax after formatting
  • • Follow ESLint rules
Supported Features
  • • Functions (regular & arrow)
  • • ES6+ classes
  • • Objects and arrays
  • • Template literals
  • • Conditionals & loops
  • • Async/await syntax
  • • Destructuring
  • • Comments (single & multi-line)
Limitations

This is a basic beautifier that:

  • • Focuses on structure & indentation
  • • Handles common JavaScript patterns
  • • Preserves strings & comments
  • • May not handle complex edge cases

For advanced formatting, use Prettier or ESLint