postcss 0,10,11,36,14,0,21,0 editorconfig eslint travis-ci npm

Transforming styles with JS plugins

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PostCSS is a tool for transforming styles with JS plugins. These plugins can lint your CSS, support variables and mixins, transpile future CSS syntax, inline images, and more.

PostCSS is used by industry leaders including Wikipedia, Twitter, Alibaba, and JetBrains. The Autoprefixer PostCSS plugin is one of the most popular CSS processors.

Twitter account: @postcss. page: postcss. Support / Discussion: Gitter.

For PostCSS commercial support (consulting, improving the front-end culture of your company, PostCSS plugins), contact Evil Martians at [email protected].

Sponsored by Evil Martians


Currently, PostCSS has more than 200 plugins. You can find all of the plugins in the plugins list or in the searchable catalog. Below is a list of our favorite plugins — the best demonstrations of what can be built on top of PostCSS.

If you have any new ideas, PostCSS plugin development is really easy.

Solve Global CSS Problem

  • postcss-use allows you to explicitly set PostCSS plugins within CSS and execute them only for the current file.
  • postcss-modules and react-css-modules automatically isolate selectors within components.
  • postcss-autoreset is an alternative to using a global reset that is better for isolatable components.
  • postcss-initial adds all: initial support, which resets all inherited styles.
  • cq-prolyfill adds container query support, allowing styles that respond to the width of the parent.

Use Future CSS, Today

Better CSS Readability

  • precss contains plugins for Sass-like features, like variables, nesting, and mixins.
  • postcss-sorting sorts the content of rules and at-rules.
  • postcss-utilities includes the most commonly used shortcuts and helpers.
  • short adds and extends numerous shorthand properties.

Images and Fonts


  • stylelint is a modular stylesheet linter.
  • stylefmt is a tool that automatically formats CSS according stylelint rules.
  • doiuse lints CSS for browser support, using data from Can I Use.
  • colorguard helps you maintain a consistent color palette.


  • postcss-rtl combines both-directional (left-to-right and right-to-left) styles in one CSS file.
  • cssnano is a modular CSS minifier.
  • lost is a feature-rich calc() grid system.
  • rtlcss mirrors styles for right-to-left locales.


PostCSS can transform styles in any syntax, not just CSS. If there is not yet support for your favorite syntax, you can write a parser and/or stringifier to extend PostCSS.

  • sugarss is a indent-based syntax like Sass or Stylus.
  • postcss-scss allows you to work with SCSS (but does not compile SCSS to CSS).
  • postcss-sass allows you to work with Sass (but does not compile Sass to CSS).
  • postcss-less allows you to work with Less (but does not compile LESS to CSS).
  • postcss-less-engine allows you to work with Less (and DOES compile LESS to CSS using true Less.js evaluation).
  • postcss-js allows you to write styles in JS or transform React Inline Styles, Radium or JSS.
  • postcss-safe-parser finds and fixes CSS syntax errors.
  • midas converts a CSS string to highlighted HTML.


More articles and videos you can find on awesome-postcss list.



You can start using PostCSS in just two steps:

  1. Find and add PostCSS extensions for your build tool.
  2. Select plugins and add them to your PostCSS process.


Use postcss-loader in webpack.config.js:

module.exports = {
    module: {
        rules: [
                test: /\.css$/,
                exclude: /node_modules/,
                use: [
                        loader: 'style-loader',
                        loader: 'css-loader',
                        options: {
                            importLoaders: 1,
                        loader: 'postcss-loader'

Then create postcss.config.js:

module.exports = {
    plugins: [


Use gulp-postcss and gulp-sourcemaps.

gulp.task('css', function () {
    var postcss    = require('gulp-postcss');
    var sourcemaps = require('gulp-sourcemaps');

    return gulp.src('src/**/*.css')
        .pipe( sourcemaps.init() )
        .pipe( postcss([ require('precss'), require('autoprefixer') ]) )
        .pipe( sourcemaps.write('.') )
        .pipe( gulp.dest('build/') );

npm run / CLI

To use PostCSS from your command-line interface or with npm scripts there is postcss-cli.

postcss --use autoprefixer -c options.json -o main.css css/*.css


If you want to compile CSS string in browser (for instance, in live edit tools like CodePen), just use Browserify or webpack. They will pack PostCSS and plugins files into a single file.

To apply PostCSS plugins to React Inline Styles, JSS, Radium and other CSS-in-JS, you can use postcss-js and transforms style objects.

var postcss  = require('postcss-js');
var prefixer = postcss.sync([ require('autoprefixer') ]);

prefixer({ display: 'flex' }); //=> { display: ['-webkit-box', '-webkit-flex', '-ms-flexbox', 'flex'] }



For other environments, you can use the JS API:

const fs = require('fs');
const postcss = require('postcss');
const precss = require('precss');
const autoprefixer = require('autoprefixer');

fs.readFile('src/app.css', (err, css) => {
    postcss([precss, autoprefixer])
        .process(css, { from: 'src/app.css', to: 'dest/app.css' })
        .then(result => {
            fs.writeFile('dest/app.css', result.css);
            if ( ) fs.writeFile('dest/',;

Read the PostCSS API documentation for more details about the JS API.

All PostCSS runners should pass PostCSS Runner Guidelines.


Most PostCSS runners accept two parameters:

  • An array of plugins.
  • An object of options.

Common options:

  • syntax: an object providing a syntax parser and a stringifier.
  • parser: a special syntax parser (for example, SCSS).
  • stringifier: a special syntax output generator (for example, Midas).
  • map: source map options.
  • from: the input file name (most runners set it automatically).
  • to: the output file name (most runners set it automatically).

Editors & IDE Integration


Sublime Text



WebStorm 2016.3 has built-in PostCSS support.

Related Repositories



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Top Contributors

ai ben-eb davidtheclark jedmao MoOx jonathantneal TrySound seaneking morishitter lydell MadLittleMods MohammadYounes maximkoretskiy Siilwyn andrepolischuk azat-io andyjansson johnotander pascalduez Semigradsky cvrebert vanesyan simonsmith andreypopp shvaikalesh ismamz archana-s markfinger marcustisater yuezk


package version
chalk ^2.0.1
source-map ^0.5.6
supports-color ^4.2.0
dev babel-core ^6.25.0
babel-eslint ^7.2.3
babel-plugin-add-module-exports ^0.2.1
babel-plugin-precompile-charcodes ^1.1.0
babel-preset-env ^1.6.0
concat-with-sourcemaps ^1.0.4
del ^3.0.0
docdash ^0.4.0
eslint ^4.2.0
eslint-config-postcss ^2.0.2
fs-extra ^4.0.0
gulp ^3.9.1
gulp-babel ^6.1.2
gulp-changed ^3.1.0
gulp-eslint ^4.0.0
gulp-jest ^2.0.0
gulp-run ^1.7.1
gulp-sourcemaps ^2.6.0
jest ^20.0.4
jsdoc ^3.5.3
lint-staged ^4.0.2
postcss-parser-tests ^6.0.2
pre-commit ^1.2.2
run-sequence ^2.0.0
size-limit ^0.7.0
strip-ansi ^4.0.0
yaspeller-ci ^0.6.0


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