Clean up and format messy, minified, or obfuscated JavaScript code instantly. Our JS Beautifier takes “ugly” code and transforms it into a structured, readable format. Whether you’re debugging a third-party library or cleaning up your own project, our tool restores line breaks, indentation, and spacing to professional standards.
Modern web development relies on “Minification” to save bandwidth, but minified code is impossible for humans to read. Our tool solves this by:
- Restoring Logical Structure: Automatically applies consistent indentation using spaces or tabs.
- Unpacking Minified Scripts: Converts a single giant line of
.min.js code back into a readable multi-line script.
- Enhanced Debugging: Properly formatted code makes it easier to spot syntax errors, unclosed braces
}, or logic flaws.
- Clean Syntax: Ensures consistent spacing around operators (
=, +, -), loops, and conditional statements.
Key Features
- Instant Formatting: Paste your code and see the “beautified” version in milliseconds.
- Deep Nesting Support: Perfectly handles complex nested functions, objects, and arrays.
- Local Privacy: All processing happens in your browser’s memory. We never save, store, or transmit your proprietary scripts to any server.
- ES6+ Compatible: Supports modern JavaScript syntax, including arrow functions, template literals, and async/await.
How to Beautify Your JavaScript
- Paste: Copy your unformatted or minified JS into the input field.
- Format: Click the “Beautify JS” button to run the formatting engine.
- Copy: Use the “Copy to Clipboard” button to move the clean code back to your IDE.
Pro Tip: If you’ve finished debugging and are ready to go live, use our JS Minifier to compress your file back down for maximum production performance.