JavaScript Beautifier: Online Format & Minify JS Code

Transform minified or messy JavaScript into clean, formatted code with our free online JS beautifier. Supports modern ES6+ syntax and custom indentation styles for better readability. Fully secure and browser-based, ensuring your proprietary scripts are never transmitted.

Source Code

JS / TS

Formatted Result

Load From CDN

Instantly fetch and format popular JavaScript libraries.

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Does it support ES6+ and TypeScript syntax?

Yes, the beautifier fully supports modern JavaScript including arrow functions, destructuring, template literals, async/await, optional chaining, and TypeScript syntax.

How does the minification process work?

Minification removes all unnecessary whitespace, comments, and line breaks. It also shortens variable names where safe, reducing file size significantly for faster production deployment.

Can I load code directly from a CDN?

Yes! Use the 'Load From CDN' section below the editors to instantly fetch and format popular libraries like React, Lodash, jQuery, and more — great for studying how production code is structured.