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Efficiently minify CSS code by removing redundant characters to boost page load performance.
Slow page load times are often caused by bloated CSS files. This tool minifies CSS by removing spaces, comments, and other redundant characters. CSS minification is the process of reducing file size by stripping out unnecessary characters, outputting streamlined but functionally equivalent code.
How should I choose the optimization level?
The default Level 1 is suitable for most scenarios. Higher levels require compatibility testing.
What exactly does the Rebase feature do?
When the deployment location of a CSS file changes, it automatically corrects relative URL paths (e.g., url(../img/bg.png)) to prevent resource loading failures.
Ensure your input uses valid CSS syntax. Minification is irreversible, so please back up your source files. If you enable Rebase, verify your resource paths. Always perform compatibility testing before deploying to a production environment.
We recommend using a CSS validator to check syntax integrity after minification. Typical example: Inputting body { margin: 0; /* reset */ } will output body{margin:0}, achieving a 30% compression rate. For complex structures like media queries, Level 2 optimization is recommended.
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