CSS Minifier
Minify CSS code by removing whitespace, comments, and unnecessary characters. This reduces file size for faster loading times in production. Perfect for optimizing stylesheets before deployment.
When to use this tool
You are shipping CSS to production and want smaller payloads.
You need to reduce the size of inline CSS blocks.
Examples
Minify a simple rule
Input
.button {
padding: 8px 12px;
background: #0a84ff;
}Output
.button{padding:8px 12px;background:#0a84ff}Whitespace is removed while preserving rule order.
Developer use cases
Minify critical CSS for faster first paint.
Compress a CSS snippet before embedding it into HTML.
Common mistakes to avoid
Minifying vendor-specific hacks without testing older browsers.
Assuming minification will reorder or optimize CSS rules.
Format and behavior notes
Minification preserves selector order and specificity.
For full CSS optimization, use a build tool with PostCSS.
Related Tools
Frequently Asked Questions
How do I minify CSS?
Paste your CSS code into the input field and click Minify. The minified CSS will appear in the output field.
How much file size reduction can I expect?
File size reduction varies, but typically you can expect 20-50% reduction depending on the original code formatting.
Does minification break my CSS?
No, minification only removes whitespace and comments. The functionality of your CSS remains exactly the same.