JavaScript Formatter

This tool beautifies (formats) or minifies CSS, HTML, and JavaScript code. Beautifying adds proper indentation and line breaks for readability, while minifying removes whitespace and comments to reduce file size.

Yes. All formatting and minification happens 100% in your browser using client-side JavaScript. Your code is never sent to any server or stored anywhere.

Beautify (or prettify) adds proper indentation, line breaks, and spacing to make code human-readable. Minify does the opposite — it removes unnecessary whitespace, comments, and formatting to create the smallest possible file size for production use.

Yes. You can choose between 2 spaces, 4 spaces, or tabs for indentation when beautifying code. The indent setting applies to all three languages (CSS, HTML, and JavaScript).

Minification typically reduces CSS and JavaScript file sizes by 10-30%, depending on how much whitespace and comments the original code contains. HTML minification usually yields a 5-15% reduction. Actual results vary based on coding style.