CSS Minifier
Paste readable CSS and get back a compacted version with whitespace and redundant syntax stripped, without changing how any of it renders.
Overview
Minified CSS parses identically to the original but ships fewer bytes over the network — smaller stylesheets mean a faster first paint, which matters more on slow connections than most other performance work. This tool does that compaction in your browser, useful for a quick one-off file or checking what a build pipeline's output should roughly look like.
Examples & Sample Data
Compacting a rule set
.box {
color: red;
margin: 0px;
}
.box{color:red;margin:0}
How It Works
- Paste your CSS into the input box.
- Click Minify to get a compacted version, ready to copy.
Frequently Asked Questions
No. Minification runs entirely in your browser.
No — minification only removes whitespace and redundant syntax that don't affect how styles are applied.
Not for production pipelines — those tools integrate with bundlers and run automatically on every build. This tool is for quick, one-off minification without setting up a build step.
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