env.dev

CSS Minifier / Beautifier

Minify and beautify CSS online. Strip whitespace and comments to shrink stylesheet size, or reformat compressed CSS for readability — runs entirely in your browser.

Last updated:

Input CSS
Output

How to Use CSS Minifier / Beautifier

  1. 1Paste your CSS code into the input editor.
  2. 2Choose "Minify" to remove whitespace and comments, or "Beautify" to format with consistent indentation.
  3. 3View the result in the output panel along with the file size difference.
  4. 4Click "Copy" to copy the minified or beautified CSS to your clipboard.

Frequently Asked Questions

What is CSS minification?

CSS minification is the process of removing unnecessary characters from CSS code — such as whitespace, newlines, comments, and redundant semicolons — without changing how the browser interprets it. The result is a smaller file that loads faster.

How much file size does minification save?

Typical savings range from 10% to 30% depending on how the original CSS is formatted. Heavily commented and well-indented stylesheets see the largest reductions. Combined with gzip compression, total transfer size can drop by 70% or more.

Does minification change how CSS works?

No. Minification only removes characters that have no effect on rendering. The browser interprets minified CSS identically to the original. Your styles, selectors, and media queries all behave exactly the same.

Is my CSS sent to a server?

No. All minification and beautification is performed entirely in your browser. Your CSS never leaves your device.

Related Tools

JSON Formatter & Validator

Format, prettify, validate, and minify JSON online. Syntax highlighting, configurable indent, and clear errors on invalid JSON — runs entirely in your browser.

SQL Formatter

Format and beautify SQL for MySQL, PostgreSQL, SQLite, and SQL Server. Uppercase keywords, indent clauses, and make CTEs and stored procedures readable.

Markdown Preview

Preview Markdown as HTML in real time. Headings, lists, bold, italic, inline code, and blockquotes render instantly — perfect for docs and README writing.