ConverterTools
by Notch Labs
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JavaScript Formatter & Beautifier

Format, beautify, and validate your JavaScript code for better readability and maintenance

Drag & Drop JS File

or click to browse files

Or paste your JavaScript code directly:

Original JavaScript

Formatted JavaScript

Formatted code will appear here...

About JavaScript Formatting

Transform messy, minified, or poorly formatted JavaScript into clean, readable code with proper indentation and structure.

Key Features:

  • 100% client-side processing - your code never leaves your browser
  • Proper indentation and formatting for readability
  • Consistent spacing and brace placement
  • Support for modern JavaScript (ES6+) features

Why Format Your JavaScript?

Benefits of Clean JS:

  • • Improved readability and maintainability
  • • Easier debugging and troubleshooting
  • • Better collaboration with team members
  • • Consistent coding standards
  • • Faster onboarding for new developers

Perfect For:

  • • Minified JS from production environments
  • • Legacy code with inconsistent formatting
  • • Code from different team members with varying styles
  • • Automatically generated JavaScript from tools
  • • Preparing code for documentation or sharing

JavaScript Formatter Tool - Clean and Format Your JS Code

Our free JavaScript Formatter tool helps developers transform messy, compressed, or poorly formatted JS into clean, readable code with consistent indentation and structure. Whether you're working with minified production JavaScript or inherited code with inconsistent formatting, our tool makes it easy to improve readability and maintainability.

How to Use the JavaScript Formatter

  1. Upload your JS file or paste your JavaScript code directly into the input area
  2. Customize formatting options if needed (indentation, semicolons, etc.)
  3. Click the "Format JavaScript" button to format your code
  4. Review the beautifully formatted output in the results panel
  5. Download the formatted JS file or copy to clipboard for immediate use

Why Format Your JavaScript Code?

Well-formatted JavaScript is essential for maintainability, debugging, and collaboration. Our JS Formatter ensures:

  • Consistent indentation with proper nesting of functions and blocks
  • Correct spacing around operators, brackets, and braces
  • Logical organization of code structure
  • Improved readability for developers of all skill levels
  • Easier debugging and troubleshooting of code issues

Advanced JavaScript Formatting Features

Our JavaScript Formatter goes beyond basic formatting with advanced features designed for professional developers:

  • Support for all modern JavaScript features (ES6+) including arrow functions, classes, and modules
  • Proper handling of async/await and promise chains
  • Preservation of important comments and documentation
  • Configurable formatting options to match your team's style guide
  • Compatibility with JSX and React components

Frequently Asked Questions

Is my JavaScript code secure when using this formatter?

Yes! All processing happens entirely in your browser. Your JavaScript code never leaves your computer, ensuring complete privacy and security for your proprietary code.

Does the JavaScript Formatter work with frameworks like React or Vue?

Absolutely. Our tool works with all JavaScript frameworks including React, Vue, Angular, and any other framework you might be using.

Can I customize the formatting rules?

Yes, we provide several formatting options including indentation size (spaces or tabs), semicolon usage, and other common formatting preferences.