Format and beautify JavaScript code with customizable options.
javascript
formatter
beautifier
About JavaScript Beautifier & Formatter
This free online JavaScript beautifier and formatter tool helps you format, beautify, and organize JavaScript code with customizable indentation options. Essential for code maintenance, debugging, and improving readability.
Key Features
Code beautification to transform minified JavaScript into readable format
Customizable indentation with 2, 4, or 8 spaces, or tab options
Real-time JavaScript syntax validation with detailed error messages
File upload and download capabilities for batch processing
Auto-validation to check syntax as you type
Copy to clipboard or download formatted code as .js files
Client-side fallback support for reliable processing
Intelligent brace and whitespace formatting
Use Cases
Code review - format code for better readability before reviews
Debugging - make minified production code readable for troubleshooting
Code maintenance - clean up and organize existing JavaScript files
Learning - understand complex code structure through proper formatting
Development - ensure consistent formatting across projects
Documentation - prepare clean code examples for guides
Supported Formats
JavaScript (ES5, ES6+)
Minified JavaScript
Node.js Code
React/JSX Components
TypeScript (basic)
JSON Objects and Arrays
Related Keywords
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Development Tip
Use this tool to format minified JavaScript from production builds when debugging. The beautified code will be much easier to read and understand, helping you identify issues more quickly.
Privacy & Security
All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.
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