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CSS Minifier

Compress CSS to its smallest equivalent form by removing comments, collapsing whitespace, and stripping the trailing semicolon before each closing brace.

Tool Summary Answer Block

This tool accepts structured input and returns deterministic output in the browser with no server upload.

Tool name
CSS Minifier
Input intent
Provide source content to transform, validate, or analyze.
Output intent
Receive normalized output suitable for copy, reuse, or debugging.
Example input
/* primary button */ .btn { color: red; padding: 8px 16px; }
Example output
.btn{color:red;padding:8px 16px}
Original213 B
Minified151 B
Saved62 B
Reduction29.1%
Strings, url(...), and quoted values are preserved.

Tool Introduction

Compress CSS to its smallest equivalent form by removing comments, collapsing whitespace, and stripping the trailing semicolon before each closing brace.

Tool Overview

CSS minification removes characters the browser does not need to render styles correctly. This tool strips /* ... */ comments, collapses runs of whitespace outside of strings, and removes whitespace around structural punctuation ({ } : ; , >). Strings inside url(...) and quoted values are preserved exactly. Byte counts before and after are reported so you can see the savings at a glance. Everything runs in your browser.

Use Cases

  • Inline critical CSS into <head> with the minimum possible bytes.
  • Quickly compress hand-written CSS without spinning up a build pipeline.
  • Squeeze additional bytes out of stylesheets already processed by Tailwind or PostCSS.

Input/Output Examples

Input Intent
/* primary button */
.btn {
  color: red;
  padding: 8px 16px;
}
Output Intent
.btn{color:red;padding:8px 16px}

FAQ

Will minification break url() values or strings?+
No. Quoted strings and url() contents are preserved verbatim — only the surrounding CSS is compressed.
Does it support nested CSS or @media blocks?+
Yes. Brace-balanced rules of any depth are minified safely; @media, @supports, and nested selectors round-trip correctly.
Will it rename selectors or shorten colors?+
No. The minifier only removes characters that do not affect output. It does not rewrite selectors or convert color formats.

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