>Fafa Dev Tools

CSS Minifier & Beautifier

Minify CSS to reduce file size or beautify CSS for readability. Free online CSS minifier with size comparison and instant conversion.

0 chars
Output will appear here...

What is CSS Minifier & Beautifier?

CSS minification removes unnecessary characters (whitespace, comments, newlines) from CSS files without changing functionality, reducing file size by 20-40%. Smaller files load faster, improving page speed and Core Web Vitals scores. CSS beautification does the reverse — formatting minified CSS for readability during development.

How to Use

  1. Paste your CSS code in the input area
  2. Click Minify to compress or Beautify to format
  3. The result appears instantly
  4. For minification, see the size savings displayed below the output
  5. Download the result as a .css file

Examples

Minify CSS

Input.container { display: flex; padding: 16px; }
Output.container{display:flex;padding:16px}

Beautify CSS

Input.btn{display:inline-block;padding:8px 16px;border-radius:4px}
Output.btn { display: inline-block; padding: 8px 16px; border-radius: 4px; }

Related Tools

JS

JS Minifier & Beautifier

Minify JavaScript to reduce file size or beautify JS for readability. Free online JavaScript minifier using Terser with size comparison.

{ }

JSON Formatter & Minifier

Format, beautify, and minify JSON online. Free JSON formatter with syntax validation and error highlighting.

SQL

SQL Formatter

Format and beautify SQL queries online. Free SQL formatter supporting MySQL, PostgreSQL, SQL Server, and more. Instant conversion.

<>

XML Formatter & Beautifier

Format and beautify XML documents online. Free XML formatter with minification support. Instant conversion with proper indentation.

Frequently Asked Questions

How much size does minification save?

Typically 20-40% depending on the CSS. Files with lots of whitespace and comments save more. Production CSS should always be minified for best performance.

Does minification change CSS behavior?

No. Minification only removes whitespace, comments, and optional characters. The CSS rules and their specificity remain identical. Always keep the original unminified version for editing.

Should I use a build tool instead?

For production workflows, use PostCSS, cssnano, or your bundler's built-in minifier. This tool is best for one-off minification, debugging, or quick tasks.