JavaScript Beautifier
Format, beautify, and minify JavaScript code instantly in your browser with no upload required. Paste any minified or poorly-indented JavaScript to pretty-print it with consistent 2-space indentation and readable spacing. Handles modern JavaScript including ES6+, arrow functions, async/await, destructuring, and template literals.
How to Use the JavaScript Beautifier
- 1
Paste your JavaScript
Paste your minified, obfuscated, or poorly-indented JavaScript into the input area.
- 2
Click Beautify
Click "Beautify" to apply 2-space indentation and consistent formatting.
- 3
Review the output
The formatted code appears in the output panel. Check that the structure looks correct.
- 4
Copy or minify
Click "Copy" to copy the formatted code, or "Minify" to recompress for production use.
Key Features
Private
Proprietary source code never leaves your browser — safe for unreleased features and internal code.
Modern JS Support
Handles ES6+, arrow functions, async/await, destructuring, template literals, and class syntax.
Instant
Format any size JS file in milliseconds — no build pipeline required.
Pro Tips
Beautified JavaScript is much easier to debug in browser DevTools — paste minified code here first when investigating library issues.
Prettier and ESLint are the right tools for automated formatting in your dev workflow. This tool is for quick one-off tasks without any configuration.
For TypeScript-specific syntax (type annotations, generics, decorators), use Prettier with the TypeScript parser in your editor for full AST awareness.
Privacy Note
All processing in this tool runs entirely in your browser — no data is transmitted to any server. Your input is never logged, stored, or shared. This tool is free to use with no account or registration required.
Frequently Asked Questions
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Your input is processed locally in your browser and is never stored, transmitted, or shared with any server. See our Privacy Policy.