Minifiers

CSS Minifier

Shrink CSS by removing unnecessary whitespace and comments and applying safe, semantics-preserving optimizations (like shortening color values), using csso — the same minifier used by many production build tools.

CSS

Minified CSS

CSS Formatter

Beautify CSS, including nesting, media queries, and variables.

HTML Minifier

Minify HTML safely, preserving pre/textarea/script/style content.

PX ↔ REM Converter

Convert between px and rem with a configurable root font size.

Features

Removes unnecessary whitespace and comments
Applies safe, semantics-preserving optimizations
Shows original size, minified size, and percentage reduction

How to use

Paste your CSS into the input.
Click Minify.
Copy or download the minified result.

Example

.a { color: red; background: blue; } → .a{color:red;background:#00f}