Examples
See what this tool can do.
Shrink a stylesheet
Cut comments and spacing to reduce CSS size.
Inline compact CSS
Produce tight CSS to inline in a page head.
Tips & tricks
Get the most out of it.
- 1Keep a readable source file and minify as a build step.
- 2For unused-CSS removal, use a dedicated build tool.
- 3Test the page after minifying to confirm styles are intact.
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About CSS Minifier
What this tool does
CSS Minifier compresses stylesheets by stripping comments and extra whitespace.
How to use it
- Paste your CSS.
- Minify it.
- Copy the compact output.
How it works
The tool removes CSS comments and collapses whitespace around braces, colons and semicolons while keeping the rules intact.
Important considerations
- This is whitespace-level minification, not a full optimiser — it won't merge rules or remove unused CSS.
Privacy
This tool runs entirely in your browser. The text, HTML or settings you enter are processed locally and never uploaded to a server.
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Frequently asked questions
No. It performs safe whitespace and comment removal. Removing unused selectors requires a tool that analyses your pages.