CSS Minifier

Minify CSS to reduce file size or beautify minified CSS for readability. Remove comments, whitespace, and optimize selectors instantly.

0 / 500,000
Result
Enter CSS to minify or beautify
Processes up to 500,000 characters. All processing happens in your browser — your data never leaves your device.

How to Use This Tool

  1. 1

    Paste your CSS

    Paste your CSS code into the input area, or click Load sample to try with example CSS.

  2. 2

    Choose mode

    Select Minify to compress CSS by removing comments and whitespace, or Beautify to format it with proper indentation.

  3. 3

    Review the stats

    See the original size, output size, bytes saved, and percentage reduction at a glance.

  4. 4

    Copy the result

    Click Copy to get the processed CSS. Use minified CSS in production for faster page loads.

Frequently Asked Questions

What does CSS minification do?
CSS minification removes unnecessary characters like comments, whitespace, newlines, and the last semicolons before closing braces — without changing functionality. This reduces file size for faster page loads.
Will minification break my CSS?
No. Minification only removes non-essential characters. Your CSS rules, selectors, and values remain exactly the same and work identically.
What does the Beautify mode do?
Beautify takes minified or messy CSS and reformats it with proper indentation, line breaks, and spacing — making it easy to read and edit.
How much can I reduce file size?
Typically 20-40% for well-formatted CSS with comments. The reduction depends on how much whitespace and comments are in the original code.