Minify CSS online to reduce file size, or beautify it for easier reading. Free CSS minifier and formatter that runs in your browser. Copy in one click.
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About this tool
Minify CSS for compact output or beautify it for easier reading.
How to use CSS Minifier & Beautifier
Paste CSS and choose Minify or Beautify.
Inspect Result and the size summary.
Copy the output and test it with the pages that use those styles.
Worked example
Beautify a compact rule set before reviewing it, then minify a separate copy for delivery.
Does minifying remove unused styles?
No. This tool focuses on text formatting and cleanup, not a project-wide unused-CSS analysis.
Can I skip testing the generated CSS?
No. Keep the source and check layout, custom properties and special syntax in the target browser.
Explore CSS Tools · More practical guides
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