PostCSS is a tool for transforming CSS with JavaScript. It can be used to develop a template language such as Sass and LESS. The PostCSS core consists of:

CSS parser that generates an abstract syntax tree

Set of classes that comprises the tree

CSS generator that generates a CSS line for the object tree

Code map generator for the CSS changes made#

There are official tools making it possible to use PostCSS with build systems such as Webpack, Gulp, and Grunt. There is also a console interface available. Browserify or Webpack can be used to open PostCSS in a browser.

The complete plugin list can be found on postcss.parts, with some examples listed below.

Autoprefixer to add and clear browser prefixes.

CSS Modules to get CSS selectors isolated and code organized. It is supplied as part of Webpack.

stylelint to analyze CSS code for mistakes and check style consistency.

stylefmt fixes the CSS code according to the stylelint settings.

PreCSS to perform some Sass/Less preprocessing functions.

postcss-preset-env to emulate features from unfinished CSS specification drafts.

cssnano to make CSS smaller in size by getting rid of the spaces and rewriting the code.

RTLCSS to change CSS code so that the design should be suitable for right-to-left writing (such is applied in Arabic and Hebrew).

postcss-assets, postcss-inline-svg and postcss-sprites to work with graphics.

Here are 3,419 public repositories matching this topic...

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egoist / poi

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cssnano / cssnano

A modular minifier, built on top of the PostCSS ecosystem.

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peterramsing / lost

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LostGrid is a powerful grid system built in PostCSS that works with any preprocessor and even vanilla CSS.

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suitcss / suit

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twbs / rfs

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✩ Automates responsive resizing ✩

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evrone / postcss-px-to-viewport

A plugin for PostCSS that generates viewport units (vw, vh, vmin, vmax) from pixel units. The best choice to create a scalable interface on different displays by one design size.