CSS Formatter & Beautifier

CSS sent to browsers is often minified: all newlines, indentation, and optional spaces are stripped so the whole stylesheet collapses onto one line to save bytes. That is great for download size but painful to read or debug. A formatter reverses the cosmetic part: it re-inserts line breaks and indentation so each declaration sits on its own line, opening braces get a space before them, and every rule is separated by a blank line. It does not change which selectors match or how the cascade resolves; the parsed result is identical. This particular tool is deliberately lightweight. It works by running a handful of regular-expression substitutions over the text: it collapses runs of whitespace, then breaks after each { and ; and around }, then indents two spaces. Because it is a regex pass rather than a real CSS parser, it handles ordinary rules well but does not understand context. Semicolons or braces that appear inside string values, data: URIs, or /* comments */ are treated like real syntax and can be split onto the wrong line. Nested at-rules such as @media or @supports blocks are not re-indented an extra level. For everyday hand-written CSS the output is clean and correct; for tricky edge cases reach for a full parser-based tool like Prettier or stylelint.