What does CSS minification do?

Minification removes all comments, unnecessary whitespace, newlines, and the last semicolon in each rule block. The result is functionally identical CSS in fewer bytes.

How much does CSS minification reduce file size?

Typical savings are 20–40% depending on how much whitespace and comment content the original has. Well-structured source CSS with comments saves the most.

Does minification change how the CSS behaves?

No. Minification only removes non-functional characters. The browser applies identical styles from minified and unminified CSS.

Is my CSS sent to a server?

No. All processing runs in your browser as JavaScript string operations. Your code is never transmitted.

Can I also format / beautify CSS?

Yes. Switch to Format mode to expand minified CSS into a readable multi-line format with consistent indentation.

CSS Minifier & Formatter — Compress and Beautify CSS Online | Toolivon

CSS Minifier & Formatter

Minify CSS for production or format it for readability. Shows exact size reduction.

Input CSS

Output CSS

Output will appear here…

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How to Minify CSS

1
Choose Minify or Format
Select Minify to compress CSS for production, or Format to beautify CSS for readability.
2
Paste your CSS
Paste your stylesheet or CSS block into the left input panel.
3
Click Minify CSS / Format CSS
The processed output appears in the right panel with the size reduction percentage.
4
Copy the result
Click the copy button to grab the minified or formatted CSS.

Frequently Asked Questions

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