Free Online JavaScript Formatter
Format, beautify, and minify JavaScript code instantly. Supports ES6+ syntax highlighting and local browser processing.
javascript Input JavaScript
code Output Result
Key Features
Syntax Highlighting
Color-coded JavaScript keywords, strings, numbers, and functions for better readability.
ES6+ Support
Full support for modern JavaScript including arrow functions, template literals, destructuring, and async/await.
Instant Processing
All operations run locally in your browser for instant results with no server roundtrips.
Privacy Protected
Your code never leaves your browser. No server storage or tracking.
Frequently Asked Questions
Getting Started
What is a JavaScript formatter?
A JavaScript formatter takes compressed or inconsistently styled JS code and rewrites it with uniform indentation, spacing, and line breaks. It supports modern ES6+ syntax including arrow functions, template literals, destructuring, and async/await.
Is this JavaScript formatter free?
Yes. All tools are completely free and run locally in your browser. No signup, no limits, no hidden costs.
Does the tool store my code?
No. Your JavaScript code never leaves your browser. All processing happens locally on your device.
Features & Usage
How do I format JavaScript?
Simply paste your JavaScript into the input area and click the "Format JavaScript" button. The tool uses js-beautify for professional-grade formatting with 2-space indentation.
Does the formatter handle template literals?
Template literals with ${expression} interpolation are preserved as-is. The formatter does not break or modify content inside template literals.
Does it support JSX or TypeScript?
This tool targets standard JavaScript (ES6+). JSX and TypeScript are not fully supported. Use a dedicated formatter like Prettier for those environments.
Troubleshooting
Will minifying change my variable names?
No. This tool performs whitespace minification only. It does not rename variables, shorten function names, or remove dead code.
Can I use this tool offline?
Yes! Once you've visited the page, all functionality works offline thanks to service workers and local processing.