How to Use
- 1.
Paste CSS code into the input editor.
- 2.
Choose whether to remove safe CSS comments from the output.
- 3.
Click Minify CSS to compress whitespace and punctuation spacing.
- 4.
Review original size, minified size, saved bytes, savings percentage, and line count.
- 5.
Copy the compact CSS or download it as a .css file.
- 6.
Test unusual hacks, generated CSS, or preprocessor syntax before production use.
Features
CSS minifier and compressor
Optional safe comment removal
Preserves quoted strings
Keeps important license comments
Original and minified size stats
Saved bytes and percentage summary
Copy minified CSS to clipboard
Download output as a .css file
Frequently Asked Questions
What is CSS minification?+
CSS minification removes unnecessary spaces, line breaks, and optional comments from stylesheet code so the output becomes smaller while normal CSS behavior stays the same.
How do I minify CSS online?+
Paste your CSS into the input box, choose whether to remove comments, click Minify CSS, then copy or download the compressed output.
Does this CSS compressor remove comments?+
Yes, when the remove comments option is enabled. Important license comments that begin with an exclamation mark are preserved.
Will minified CSS work the same?+
For normal CSS, it should work the same. Review output before using it with unusual browser hacks, generated CSS, or preprocessor syntax.
Can I download the minified CSS file?+
Yes. After minifying, click Download .css to save the compressed stylesheet as a file.
Is my CSS uploaded to WebToolsEdge?+
No. Minification, stats, copy, and download actions run locally in your browser.
About this tool
Free CSS Minifier
Use this free CSS Minifier Online to compress CSS code directly in your browser. Paste stylesheet code from a website, landing page, WordPress theme, component file, email template, or static project and create compact CSS that is easier to ship, store, or test. CSS minification removes unnecessary whitespace, line breaks, and optional comments without changing normal CSS behavior. A smaller stylesheet can help reduce file size, make snippets easier to embed, and keep production code cleaner. This browser-based CSS compressor is useful when you need a quick one-off cleanup, want to compare size savings, or are working with styles copied from a CMS, page builder, or design handoff. The tool compresses spacing around selectors, braces, colons, semicolons, commas, and common combinators while preserving quoted strings. It also keeps important license comments that start with an exclamation mark when comment removal is enabled. For normal CSS snippets and stylesheets, the output should behave the same. If your code contains unusual hacks, preprocessor-only syntax, generated CSS, or framework-specific edge cases, review and test the minified output before production use. Use this tool together with other developer utilities when preparing front-end assets. Minify markup with an HTML Minifier, format API payloads with a JSON Formatter, or convert content snippets between HTML and Markdown when writing documentation. All processing happens locally in your browser. Your CSS is not uploaded to WebToolsEdge. Copy the minified output or download it as a .css file when you are ready.
Preparing front-end assets? Compress page markup with the HTML Minifier, minify small JavaScript snippets with the JS Minifier, format data snippets with the JSON Formatter & Validator, or convert documentation snippets with the HTML to Markdown Converter. More code-focused utilities are available in Developer Tools.