JavaScript Beautifier
Format and beautify JavaScript code online
All processing happens in your browser. Your data never leaves your device.Features
- Beautify minified or messy JavaScript code with proper indentation
- Minify JavaScript to reduce file size for production
- Syntax-aware formatting preserves code logic and structure
- Handles modern ES6+ syntax including arrow functions and template literals
- All processing happens in your browser — your code stays private
How to Use the JavaScript Beautifier
- 1Paste your JavaScript code into the input area
- 2Click "Beautify" to format the code with proper indentation and line breaks
- 3Click "Minify" to compress the code by removing whitespace and comments
- 4Copy the formatted output for use in your project
Frequently Asked Questions
What's the difference between beautify and minify?
Beautify adds indentation, line breaks, and spacing to make code human-readable. Minify removes all unnecessary characters (whitespace, comments, newlines) to reduce file size for faster page loads.
Does this tool check for syntax errors?
This tool focuses on formatting. While it can handle common JavaScript syntax, it doesn't validate or debug code. For syntax checking, use a linter like ESLint or your code editor's built-in checker.
Will minifying break my code?
Basic minification (removing whitespace and comments) is safe. However, advanced minification techniques like variable renaming are not performed by this tool. For production-grade minification, use tools like Terser or UglifyJS.
Can I beautify React/JSX code?
This tool is designed for standard JavaScript. While it may handle some JSX syntax, it's not optimized for it. For React code, use a specialized formatter like Prettier.
Does it support TypeScript?
This tool works best with plain JavaScript. TypeScript-specific syntax (type annotations, interfaces) may not format correctly. Use the TypeScript compiler or Prettier for TypeScript code.