CSS Beautifier

A CSS beautifier is a tool that takes minified or messy CSS and rewrites it with consistent indentation, line breaks, and spacing so a human can read it. When you ship CSS to production it is usually minified into one long line with no spaces, which is great for download size but impossible to read in a browser's DevTools or a code review. This beautifier reverses that: it puts each declaration on its own line, indents the contents of every rule block, adds a space after each colon, and separates rules with blank lines so the structure is obvious at a glance. It works on plain CSS including complex selectors, descendant and attribute selectors, @media and @supports queries, @font-face and @keyframes blocks, and CSS custom properties (variables). An optional pass can sort declarations alphabetically within each rule, which makes diffs cleaner and helps you spot duplicate or conflicting properties. A few things to know about edge cases. The beautifier reformats whitespace only, it does not change selector specificity, merge rules, or alter values, so the rendered result is identical. It is built for standard CSS, so preprocessor syntax such as SCSS nesting, Less mixins, or interpolation may not indent perfectly because that syntax is not valid CSS on its own. Comments are preserved in place. Because everything runs locally in your browser through JavaScript, your stylesheets are never uploaded to a server, which matters when the CSS belongs to an unreleased product or a client project. Use the companion CSS Minifier for the reverse operation when you need a small production file.