JavaScript Beautifier
Beautify or minify JavaScript code. Formats messy or minified JS with proper indentation and readability.
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How to Use This Tool
Paste your JavaScript code into the input field. Click Beautify to format it with proper indentation, or Minify to remove whitespace and comments for production use.
Common Use Cases
- Reverse-engineer minified JavaScript from production pages
- Standardise code style before committing to a repo
- Minify scripts for improved page load performance
Frequently Asked Questions
What is a JavaScript beautifier?
A JavaScript beautifier (or formatter) takes minified or poorly-formatted JS code and reformats it with consistent indentation, line breaks, and spacing, making it readable and maintainable.
How does the minifier work?
The minifier strips whitespace, comments, and newlines while preserving the code's functionality, producing a compact version suitable for production.
Is my code sent to a server?
No. Beautification and minification happen entirely in your browser using the js-beautify library. Your code never leaves your machine.