JavaScript Formatter & Beautifier
Format, beautify, and minify JavaScript, JSX, and TypeScript code with syntax highlighting and error detection.
Use Cases
- Clean up minified JavaScript from browser DevTools
- Standardize code formatting across team projects
- Minify JavaScript for production to reduce file size
- Debug and understand third-party libraries
- Prepare code snippets for documentation
Features
- Supports JavaScript, TypeScript, and JSX/React
- Syntax highlighting for better readability
- Syntax error detection and reporting
- Configurable indentation (2 spaces, 4 spaces, tabs)
- Minification for production optimization
Quick Examples
Frequently Asked Questions
What is a JavaScript formatter?
A JavaScript formatter is a tool that automatically formats and beautifies JavaScript code according to consistent styling rules. It adds proper indentation, line breaks, and spacing to make code more readable and maintainable. This tool uses industry-standard formatting rules similar to Prettier.
Does this support TypeScript and JSX?
Yes! This formatter supports JavaScript, TypeScript, and JSX/React code. Use the language selector dropdown to switch between modes for optimal formatting. The tool automatically handles type annotations, interfaces, and JSX syntax.
Is my code sent to a server?
No, absolutely not. All formatting happens 100% in your browser using JavaScript. Your code never leaves your device, ensuring complete privacy for sensitive or proprietary code. You can even use this tool offline once the page is loaded.
What's the difference between beautify and minify?
Beautify adds proper indentation, line breaks, and spacing to make code readable and easy to understand. Minify does the opposite - it removes all unnecessary whitespace, comments, and shortens variable names to reduce file size for production deployment.
Can I detect syntax errors?
Yes, the formatter includes syntax error detection. If your code has syntax errors, they will be highlighted with error messages indicating the line and type of error. This helps you identify and fix problems before running your code.