Abhikesh Kumar Giri Logo
Free developer tool

CSS Minifier & Beautifier

Minify CSS to shrink file size and boost page speed, or beautify compressed code for easy editing. Paste your CSS on the left and get instant results.

Working field

Paste your CSS code to transform it.

Result

Your minified or beautified CSS appears here.

Your output will appear here.
This tool is best for compressing stylesheets for production or reformatting them for editing.

CSS Minifier & Beautifier — Minify and Format CSS Code Online

Optimize your site's performance by minifying CSS to cut file size, or beautify compressed code so it is easy to read and maintain. This tool keeps the workflow simple: paste and transform on the left, supporting content below, and the sidebar on the left for popular and related tools.

Minify CSS

Remove whitespace and comments to shrink your stylesheet and speed up load times.

Beautify CSS

Reformat compressed code with clean indentation so it is easy to edit again.

Better performance

Smaller files cut bandwidth use and improve Core Web Vitals scores.

Private by design

Everything runs in your browser, so your CSS never leaves your device.

How it works

  1. Paste your CSS code into the input field above.
  2. Click Minify to compress it, or Beautify to format it cleanly.
  3. View the transformed code in the output panel on the right.
  4. Click Copy Output and drop the result straight into your project.

Why minify CSS?

  • Reduce file size by 30 to 50 percent to improve load times.
  • Lower bandwidth consumption and hosting costs.
  • Improve Core Web Vitals and SEO rankings.
  • Make code harder to copy by stripping formatting.
  • Meet performance budgets for production builds.
  • Optimize for mobile networks and slower connections.

Frequently asked questions

What is CSS minification?

Minification removes unnecessary whitespace, comments, and redundant characters from your CSS so the file gets smaller and your pages load faster, without changing how the styles work.

Will minified CSS still work?

Yes. Minified CSS is fully functional. The tool only strips out non-essential characters that have no effect on styling, so your design looks exactly the same.

Can I reverse minified CSS?

You can. Use the Beautify button here to restore clean formatting, or try the CSS Unminifier tool for extra help with deeply compressed stylesheets.

How much does minification reduce file size?

It usually trims 30 to 50 percent off the file size, depending on how much whitespace and how many comments the original code contains.

Is minified CSS SEO-friendly?

Yes. Smaller files load quicker, which improves page speed and Core Web Vitals. Faster pages tend to rank better and give visitors a smoother experience.

Does this tool store or upload my CSS?

No. All processing happens locally in your browser. Your CSS is never sent to a server or saved anywhere, so your code stays completely private.

For more CSS tools, try the CSS Validator to check your code, the CSS Unminifier.