Free JavaScript Beautifier Online
Format and prettify your JavaScript code instantly. Improve readability with automatic indentation and spacing.
38K+ uses/month
Auto Indentation
Syntax Preservation
Options:
Input JS
Beautified Output
How to Use
1
Paste Code
Enter your JavaScript code or upload a .js file
2
Adjust Settings
Choose indentation size (2, 4, or 8 spaces)
3
Beautify
Click the button to format your code
4
Export
Copy or download the formatted file
Frequently Asked Questions
Is this tool safe?
Yes, fully secure. All processing happens in your browser - no code is ever sent to a server.
Does it support TypeScript?
Yes, standard TypeScript syntax is supported as it follows similar formatting rules to JavaScript.
Can it handling minified code?
Absolutely. It helps unpack minified code files to make them readable again.