JavaScript Beautifier & Formatter

Free online tool to beautify, format, and clean up your JavaScript code. Features include smart indentation, syntax highlighting, ES6+ support, and customizable formatting options for modern JavaScript development.
JavaScript Tools Guide

Understanding JavaScript Formatting

JavaScript is the programming language of the web, powering interactive websites and modern applications. Our JavaScript Beautifier helps you maintain clean, readable, and professional code that follows best practices.

Key Features of Our JavaScript Beautifier:

  • Smart Formatting: Intelligent code formatting with proper indentation and spacing
  • ES6+ Support: Full support for modern JavaScript features and syntax
  • Syntax Highlighting: Color-coded elements for better code readability
  • Customizable Options: Adjust indentation, line length, and formatting preferences
  • Minification: Compress JavaScript for production deployment
  • Real-time Processing: See formatting changes as you type

Whether you're working on frontend applications, Node.js backends, or any JavaScript project, our formatter ensures your code is clean, consistent, and maintainable.

JavaScript Formatting Best Practices

Consistent Indentation

Use 2 or 4 spaces consistently throughout your codebase. Avoid mixing tabs and spaces to maintain readability across different editors.

Semicolon Usage

Always use semicolons to terminate statements. While JavaScript has automatic semicolon insertion, explicit semicolons prevent unexpected behavior.

Function Spacing

Add proper spacing around functions, operators, and control structures to improve readability and make your code easier to understand.

Modern Syntax

Use modern ES6+ features like arrow functions, template literals, and destructuring while maintaining compatibility with your target environments.