CleanCss

Clean-css 是一个非常简单的 css 压缩程序，基于Node.js环境开发使用，可以删除 css 中一些无用的空格、评论以及每个选择器后面的分号，还可以压缩通过@import引入的css文件。

环境依赖

Node.js 4.0+ (tested on CentOS,Ubuntu,OS X,and Windows)

npm install clean-css

Clean-css接受下列命令行参数，使用时请将需要优化的css文件<source-file>放置到最后一个参数后面，避免遇到潜在的不可预想的问题。

cleancss [options] source-file,[source-file,...]

-h,--help output usage information

-v,--version output the version number

-b,--keep-line-breaks Keep line breaks

-c,--compatibility [ie7|ie8] Force compatibility mode (see Readme for advanced examples)

-d,--debug Shows debug information (minification time & compression efficiency)

-o,--output [output-file] Use [output-file] as output instead of STDOUT

-r,--root [root-path] Set a root path to which resolve absolute @import rules

-s,--skip-import Disable @import processing

-t,--timeout [seconds] Per connection timeout when fetching remote @imports (defaults to 5 seconds)

--rounding-precision [n] Rounds to `N` decimal places. Defaults to 2. -1 disables rounding

--s0 Remove all special comments,i.e. /*! comment */

--s1 Remove all special comments but the first one

--semantic-merging Enables unsafe mode by assuming BEM-like semantic stylesheets (warning,this may break your styling!)

--skip-advanced Disable advanced optimizations - ruleset reordering & merging

--skip-aggressive-merging Disable properties merging based on their order

--skip-import-from [rules] Disable @import processing for specified rules

--skip-media-merging Disable @media merging

--skip-rebase Disable URLs rebasing

--skip-restructuring Disable restructuring optimizations

--skip-shorthand-compacting Disable shorthand compacting

--source-map Enables building input's source map

--source-map-inline-sources Enables inlining sources inside source maps

网站描述:基于Node.js的CSS代码压缩工具

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