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CSS Minifier
Minify CSS by removing whitespace and comments.
FreeRuns in browsercss minifierminify css
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About CSS Minifier
Minify CSS by removing whitespace and comments. Minify CSS code by removing whitespace, comments, and unnecessary characters online for free. Compress stylesheets to reduce file size and boost performance. Removes unnecessary whitespace, comments, and redundant syntax to reduce file size significantly. Shows a real-time size comparison so you can see exactly how much space you saved. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.
Related tools: HTML Minifier, JavaScript Minifier, CSS Formatter & Beautifier
How to Use CSS Minifier
- Paste your code into the editor.
- Click Minify to reduce the file size.
- Copy the minified output and compare the size savings.
Frequently Asked Questions
What is CSS Minifier?
Minify CSS code by removing whitespace, comments, and unnecessary characters online for free. Compress stylesheets to reduce file size and boost performance.
How much size reduction can I expect?
Size reduction varies depending on the input, but typical minification removes 30-70% of file size by eliminating whitespace, comments, and unnecessary characters. The tool shows a before-and-after size comparison so you can see the exact savings.
Does minification break my code?
No, minification only removes characters that are syntactically unnecessary, such as whitespace, comments, and optional semicolons. The minified code is functionally identical to the original and will execute the same way.
What optimizations are applied?
The minifier removes whitespace, newlines, and comments. Depending on the language, it may also shorten variable names, collapse redundant syntax, and apply other safe optimizations that reduce size without changing behavior.
Is CSS Minifier free to use?
Yes, minification is entirely free. There are no file size limits, no usage caps, and no account required.
Is my data safe when using CSS Minifier?
Yes, your code never leaves your browser. All minification happens locally, so your source code remains private and secure.