CSS Minifier

Nén CSS, bỏ khoảng trắng và comment

CSS gốc

Result

CSS Minifier

The CSS Minifier tool compresses your CSS files by stripping out whitespace, line breaks, and comments — reducing file size without altering how your styles work. Minifying CSS is a fundamental front-end optimization that improves page load speed, lowers bandwidth usage, and boosts your site's Core Web Vitals scores. Paste your stylesheet, click minify, and get production-ready CSS in seconds.

Benefits

Minifying CSS delivers measurable performance gains for any website:

Reduces CSS file size by 20–50%, enabling faster downloads and rendering in the browser.
Lowers server bandwidth consumption, which cuts hosting costs at scale.
Improves Core Web Vitals metrics such as First Contentful Paint and Time to Interactive.
Removes all developer comments and redundant whitespace without changing a single style rule.

Use cases

This tool fits naturally into a variety of web development workflows:

Preparing stylesheets for deployment to a production server or CDN.
Optimizing CSS for landing pages, e-commerce sites, or any project where page speed is critical.
Quickly testing the minified output of a stylesheet without setting up a build pipeline like Webpack or Gulp.
Compressing third-party CSS frameworks such as Bootstrap or Tailwind CSS before bundling.

How to use

Getting minified CSS takes just a few steps:

Paste your original CSS code into the input area.
Click the Minify button to process and compress the stylesheet.
Copy the minified CSS from the output area and replace the original file in your project.
If a download option is available, save the result directly as a .css file ready for production.

Frequently asked questions

Will minifying CSS break my website's layout? No — the minifier only removes whitespace and comments; every selector, property, and value in your CSS is preserved exactly as written.

What is the difference between minifying and compressing CSS? Minification removes unnecessary characters from the source code, while compression (Gzip or Brotli) is applied at the server level during transfer — both techniques complement each other and should be used together for best results.

Can I minify multiple CSS files at once? This tool processes one stylesheet at a time; for batch minification across many files, use a build tool like PostCSS with cssnano, integrated into Webpack or Gulp.

Can minified CSS be restored to its original form? Not automatically — comments and original formatting are permanently removed, so always keep your unminified source files in version control.