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JavaScript Beautifier – Format & Minify JS, JSX & TS

Pretty-print or compress JavaScript, JSX, and TypeScript with indentation controls, syntax validation, and optional minification for production builds.

🟢 Runs locally · no uploads

JavaScript Beautifier

Format and beautify JavaScript code with ES6+ support

lightbulbPopular Use Cases

code
React Components

Format React/JSX components with hooks and state

deployed_code
Node.js Modules

Format Express routes and async/await server code

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ES6+ Features

Format modern JavaScript with arrow functions and destructuring

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Minified Scripts

Beautify minified JavaScript from production builds

JavaScript Input
{ JS }

Start Beautifying JavaScript

Paste your JavaScript, drag & drop a file, or try an example

Beautified JavaScript

Beautified JavaScript will appear here

Quick Examples & Practice
Minified Function
function calculate(a,b){const result=a*b;if(result>100){return result*2}else{return result/2}}const data=[1,2,3,4,5].map(x=>x*2).filter(x=>x>5);console.log(data);
Arrow Functions & Destructuring
const user={name:"John",age:30,email:"john@example.com"};const{name,age}=user;const greet=({name})=>`Hello,${name}!`;const numbers=[1,2,3,4,5];const doubled=numbers.map(n=>n*2);

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› About this tool · FAQ

Stop reading minified JavaScript! Format, beautify, and minify JavaScript code instantly with proper indentation, syntax validation, and optimization. Supports ES6+, JSX, and modern JavaScript features with comprehensive formatting options. Free, works offline, unlimited formatting.

How do I beautify JavaScript?

Paste your JavaScript code, select beautify mode, configure formatting options (indentation, spacing, brace placement, quote style), and format. The tool processes JavaScript instantly with comprehensive formatting and validation.

Is this JavaScript beautifier free?

Yes, completely free with unlimited formatting. No signup required, no watermarks. All formatting happens in your browser for complete privacy of JavaScript files and code.

Are JavaScript files uploaded to servers?

No, all JavaScript beautification happens locally in your browser. Files never leave your computer, ensuring complete privacy for proprietary code and client projects.

What JavaScript features are supported?

The tool supports ES6+ features including arrow functions, template literals, destructuring, async/await, classes, modules, and basic JSX syntax.

Can I customize the formatting style?

Yes, you can configure indentation, spacing around operators and brackets, quote style (single/double), semicolon insertion, and brace placement.

Does it validate JavaScript syntax?

The tool performs basic syntax validation including bracket matching, incomplete statements, and structural issues. For comprehensive linting, use dedicated tools like ESLint.

How does minification work?

Minification removes unnecessary whitespace, comments (optionally), and formatting while preserving code functionality. It doesn't perform variable renaming or advanced optimizations.

What about TypeScript support?

The tool handles basic TypeScript syntax but is primarily designed for JavaScript. For full TypeScript support, use specialized TypeScript formatters.