About the CSS Minifier
Minify CSS code to reduce file size and speed up your website. This free tool measures the real page and its resources — no account, extension or download required.
How to use the CSS Minifier
- Fill in the fields above (a URL, domain, keyword or text — whatever the tool asks for).
- Click the button to run the tool.
- Review the results and use the copy or download buttons to save them.
Frequently asked questions
Is the CSS Minifier free?
Yes. The CSS Minifier on SEO Tools Pro is completely free to use — no sign-up or account needed.
How does the CSS Minifier work?
Minify CSS code to reduce file size and speed up your website. It measures the real page and its resources, so the results reflect the current state of the web.
Do I need to install anything?
No. The tool runs online in your browser on desktop and mobile — just enter your details and click the button.
Related Speed tools
⚡Page Speed AnalyzerTest page loading speed with a speed score and detailed performance checks.→💠Core Web Vitals CheckerCheck Core Web Vitals (LCP, CLS, INP/TBT) and speed signals of any page.→🖼️Image Size OptimizerCompress and resize images (JPG, PNG, WebP) in your browser and download the smaller file.→🏞️Image Alt Text CheckerFind all images on a page that are missing alt text.→📜JavaScript MinifierMinify and compress JavaScript code safely with Terser.→🧾HTML MinifierMinify HTML by removing comments and extra whitespace.→