CSS Beautifier & Minifier
What is a CSS Beautifier?
A CSS beautifier is a development tool that formats compressed or poorly structured CSS code into a clean, readable layout with proper indentation and one property per line. A CSS minifier does the opposite, compressing stylesheets by removing whitespace, comments, and optimizing values to reduce file size. Both tools are essential for web developers managing stylesheets during development and deployment.
How to Use the CSS Formatter
- Paste or type your CSS code into the input textarea above.
- Choose your preferred indent size and toggle options.
- Click Beautify to format with proper indentation, or Minify to compress.
- Use Preview Highlight to see syntax coloring for selectors, properties, and values.
- Copy the result to clipboard or download as a .css file.
Features
- Proper brace formatting: selector on its own line, opening brace on new line
- Each CSS property indented and on its own line
- Closing braces on their own line
- Configurable indent size: 2 spaces, 4 spaces, or tab
- Remove all CSS comments (/* ... */)
- Merge duplicate selectors into single rule blocks
- Shorten hex colors: #ffffff to #fff, #aabbcc to #abc
- Syntax highlighting preview with colored selectors, properties, and values
- Handles @media queries, @keyframes, and other at-rules
- Preserves string values and URLs during formatting
- Copy to clipboard and download as file
- Fully client-side - no data leaves your browser
Frequently Asked Questions
Is my CSS code sent to a server?
No. All processing happens entirely in your browser using JavaScript. Your CSS code is never transmitted to any external server.
Does the minifier optimize colors?
Yes. Hex colors like #ffffff are shortened to #fff, and #aabbcc patterns are reduced to the three-character shorthand #abc where possible.
What does "merge duplicate selectors" do?
When enabled, the beautifier combines multiple rule blocks that share the same selector into a single block, removing duplicate property declarations.
Does it handle @media queries and @keyframes?
Yes. The formatter handles nested at-rules like @media, @keyframes, @supports, and @font-face, maintaining proper indentation for nested rule blocks.
What does the syntax highlighting show?
The Preview Highlight button renders your CSS with color coding: purple for selectors, blue for properties, green for values, gray for comments, and pink for at-rules.