JavaScript Formatter

Beautify or minify JavaScript for code clarity or performance.

✅ 100% Free

🔒 Secure & Private

⚡ Fast Processing

🧩 JavaScript Validation

Input JavaScript

Output JavaScript

Formatter Options

Indent Size

Indent Type

Max Consecutive Newlines

Newlines

Preserve existing line breaks

Brace Style

Place braces on new line

Array Formatting

Keep array indentation

Function Formatting

Space before function parentheses

File Formatting

End file with newline

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Secure & Private

Your JavaScript code is processed locally in your browser. No data is sent to our servers, ensuring complete privacy and security of your information.

Features

• Beautify JavaScript with customizable indentation

• Minify JavaScript to reduce file size

• Validate JavaScript syntax with detailed error messages

• Control brace style and function formatting

• Customize array indentation and newline preservation

About JavaScript

JavaScript is a high-level, interpreted programming language that conforms to the ECMAScript specification. It is a core technology of the World Wide Web, enabling interactive web pages and is an essential part of web applications.

Key features of JavaScript include:

First-class functions and event-driven programming
Object-oriented programming with prototypal inheritance
Functional programming capabilities
Dynamic typing and just-in-time compilation
Asynchronous programming with Promises and async/await

JavaScript is used for both frontend and backend development (Node.js), making it one of the most versatile and widely used programming languages. Modern JavaScript (ES6+) includes features like arrow functions, template literals, destructuring, spread syntax, and more.