Developer Tools

CSS Minifier

Minify CSS code to reduce file size

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What This Minifier Does

  • Removes all CSS comments /* ... */
  • Removes extra whitespace and newlines
  • Removes unnecessary spaces around selectors and properties
  • Removes last semicolons before closing braces
  • Optimizes media queries and pseudo-selectors
  • Preserves CSS functionality while reducing file size

How to Use

Minify your CSS code to reduce file size

1

Paste your CSS

Copy and paste your CSS code into the input textarea or click "Load Sample" to see an example

2

View minification

The tool automatically minifies your CSS, showing original and minified sizes

3

Review stats

Check the compression ratio, bytes saved, and number of comments removed

4

Copy output

Click the "Copy" button to copy the minified CSS to your clipboard

Frequently Asked Questions

CSS minification removes unnecessary characters from CSS code like whitespace, newlines, comments, and redundant semicolons without changing functionality. This reduces file size, leading to faster page load times, improved website performance, better Core Web Vitals scores, and improved SEO rankings.

Yes, CSS minification is completely safe when done correctly. Our tool only removes characters that dont affect how styles are applied. The minified CSS will render identically to the original. However, always test your minified CSS before deploying to production.

CSS minification typically reduces file size by 10-30%, depending on how the original CSS is formatted. Files with lots of comments and whitespace will see larger reductions. Combined with gzip compression, you can achieve 70-80% total reduction in CSS file size.

Beautified CSS has proper indentation, line breaks, and spaces for human readability - ideal for development. Minified CSS removes all unnecessary whitespace, putting everything on one line - ideal for production. Both are valid CSS and render identically in browsers.

Keep unminified CSS during development for easier debugging. Minify only for production deployment. Most build tools (Webpack, Vite, Gulp) can automate this process. Source maps can help debug minified CSS if needed.

Yes, indirectly. Faster page load times improve user experience and are a ranking factor for Google. Minified CSS contributes to better Core Web Vitals scores (especially Largest Contentful Paint and First Contentful Paint), which can positively impact search rankings.

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