CSS 格式化压缩
CSS 美化（统一缩进、注释可保留）与压缩（大小对比）：大括号平衡检查，属性顺序原样保留。
Mode
Indent
Blank line between rules
How it works
The tool first strips comments (respecting strings), then tokenizes by brace depth: at-rules (@media), selectors and declarations are re-emitted with chosen indentation; minify mode collapses runs of whitespace, removes final semicolons and shortens nothing else (no dangerous rewrites like #fff→#fff optimizations or vendor-prefix removal). Brace balance is checked — mismatched braces are reported with the depth found.
如何使用CSS 格式化压缩
粘贴样式表，在 Format 与 Minify 间切换。格式化按两空格缩进重排，注释、自定义属性与 calc() 原样保留；压缩剔除注释与空白，字符串、url() 与 data URI 逐字节保留。
每次运行后看一眼大小对比——手写样式通常缩水两到四成。编辑源保格式化版，发版交压缩版，这个往返每次保存都安全。