How to Use the CSS Minifier & Beautifier (Free & Private)

Need to format JSON from an API response? The Wivrix CSS Minifier & Beautifier is free, works in your browser, and takes seconds to use.

What this tool does

Minify CSS to reduce file size or beautify compressed CSS. Upload files, analyze vendor prefixes, view statistics. Free, fast, runs entirely in your browser.

Why use Wivrix?

Many online tools ask you to sign up, add a watermark, or upload your files to a server you cannot see. Wivrix is different:

• Private by design — Everything runs in your browser. Your files and input stay on your device — nothing is uploaded to Wivrix.
• Free — no account, no paywall, no file-size tricks
• Fast — open the page and start working

Step-by-step guide

1. Minify — paste your CSS or upload a .css file, then click Minify CSS to remove all whitespace and unnecessary characters. Great for production.
2. Beautify — paste minified CSS and click Beautify CSS to add proper indentation and line breaks for readability.
3. Remove Comments — toggle this option to strip CSS comments during minification/beautification.
4. Download — download the minified or beautified output as a .css file.

Common uses

• Format json from an api response
• Decode a jwt during debugging
• Test a regular expression quickly
• Convert yaml config to json

Frequently asked questions

Do I need an account?

No. Open the tool and use it straight away.

Is the CSS Minifier & Beautifier really free?

Yes. Wivrix tools are free to use. The site is supported by ads that load only after you consent.

Is my data safe?

Everything runs in your browser. Your files and input stay on your device — nothing is uploaded to Wivrix.

Try it now

Open the free CSS Minifier & Beautifier and follow the steps above. If this guide helped, bookmark the tool or share it with someone who needs the same job done quickly.

Related tools

• HTML Encoder / Decoder — see also our guide
• JSON Formatter & Validator — see also our guide
• Markdown Preview — see also our guide