styleDev Tool

CSS Formatter & Minifier

Beautify messy CSS with proper indentation, or minify it for production. Entirely in your browser.

Indent:
warning
Input CSS
Output

Frequently Asked Questions

A CSS formatter (beautifier) reformats CSS with consistent indentation, spacing around braces, and each declaration on its own line. It makes minified or poorly formatted CSS readable and easier to edit without changing how styles apply to your page.
CSS minification removes whitespace, newlines, and comments to reduce file size. Smaller CSS files load faster and reduce bandwidth. A well-minified CSS file is typically 30–60% smaller. All major build tools (webpack, Vite, Parcel) minify CSS automatically for production builds.
No — CSS minification only removes whitespace and comments that browsers already ignore. The resulting styles are functionally identical. The only consideration is source maps: if you rely on CSS source maps for debugging, keep the original formatted source as well.
Sorting CSS properties (alphabetically or by category) makes stylesheets more consistent and easier to scan. Many teams enforce this with Stylelint rules. This tool's "Sort properties" option reorders all declarations within each rule alphabetically.

About the CSS Formatter

Paste minified or messy CSS and get it back properly indented, one property per line, and consistently spaced. You can also go the other way — minify clean CSS into a single compact string for production builds. Supports nested rules and modern CSS syntax.

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