Free Online CSS Minifier & Optimizer
Compress CSS stylesheets by stripping spacing, comments, and empty lines to speed up page loads.
Speed Up Web Page Loading Times
CSS stylesheets contain comments, indents, and spaces to help developers read the code. However, search engines and browsers don't need these formatting characters. Minifying stylesheets reduces file sizes by up to 30%, which speeds up page loads and boosts SEO scores.
Our free online CSS minifier compresses styling code instantly inside your browser.
If you are optimizing assets, you can couple this stylesheet minifier with our JS Minifier to shrink scripts, or format code with our SQL Formatter.
Key Benefits & Features
Removes comment blocks, redundant line breaks, tabs, and spaces.
Displays exact details of bytes saved and compression ratio.
Strips code locally in JS. No files are uploaded to external databases.
How to Use the CSS Minifier Step-by-Step
This utility runs entirely inside your browser using client-side JavaScript. We prioritize your security: none of your inputted text is logged or stored.
- 1
Paste your CSS styling script inside the text editor.
- 2
Click the "Minify CSS" button.
- 3
Review compression stats and copy the minified style script.
Practical Examples
.box {\n margin: 10px;\n color: #fff;\n}
Frequently Asked Questions (FAQ)
Will minifying break my CSS styles?▼
No. The minifier strictly removes cosmetic spacing and comments. The functional syntax remains identical.
How much space can I save?▼
On average, minifying stylesheets reduces code file sizes by 15% to 35%, depending on the number of comments and spaces.
Is my styling code uploaded?▼
No. The compressor runs client-side using Javascript.
Browse our full list of free developer utilities and make your daily content, coding, or math tasks easier.
Related Tools & Utilities
Related Developer Utilities
View allFormat, validate, prettify, minify, and clean JSON payloads.
Encode characters to secure HTML entities or decode safe entities.
Compress and minify raw JavaScript files to speed up web load times.
Beautify, indent, format, and align raw database query statements.