PostCSS

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.

GitHub: https://github.com/topics/postcss
Wikipedia: https://en.wikipedia.org/wiki/PostCSS
Repo: https://github.com/postcss
Created by: Andrey Sitnik, Ben Briggs, Bogdan Chadkin
Released: November 4, 2013
Related Topics: sass, less, ast,
Last updated: 2026-07-04 00:20:11 UTC
JSON Representation

https://github.com/rnyell/postcss-contains

Style elements based on their existing property or declaration.

css postcss postcss-plugin

Last synced: 11 Feb 2026

https://github.com/lab4studio/postcss-px-to-rem

PostCSS plugin that automatically converts pixel (px) values to rem units in your CSS, allowing for scalable and responsive designs by basing measurements on the root font size.

postcss postcss-plugin px-to-em px-to-rem

Last synced: 27 Feb 2026

https://github.com/divyansh089/apple-airpods-clone

An amazing Apple AirPods UI clone

airpods apple gsap netlify nodejs postcss react tailwindcss

Last synced: 12 Feb 2026

https://github.com/nishathub/lawyer-landing-page

A lawyer portfolio responsive website with night-mode

html5 lawyer-and-law-agency portfolio-website postcss scss

Last synced: 07 Jul 2025

https://github.com/tricinel/postcss-color-hsla-fallback

PostCSS plugin to transform hsl and hsla to hexadecimal

color color-convert css hsl-color postcss postcss-plugin

Last synced: 16 Apr 2026

https://github.com/adn0s/daily-planner

Make your day better with Daily Planner app. Easy to use: add tasks with info like what it's about, when it's due, and how important it is. It's simple to keep track of everything. Get more done with less hassle.

jest postcss react redux tailwindcss typescript

Last synced: 12 Feb 2026

https://github.com/heliolj/nlw-spacetime-web

Front-end usando ReactJS, NextJS, TypeScript e mais tecnologias. Criado durante o evento da Rocketseat NLW.

autoprefixer axios eslint jwt-decode lucide-icons next nextjs postcss prettier react reactjs tailwindcss typescript

Last synced: 08 Apr 2026

https://github.com/thedroelfi/postcss-responsive-css-values

This PostCSS plugin provides you with a function that allows you to use dynamic values instead of static CSS values, which are automatically reduced from a defined breakpoint.

css css-values postcss postcss-plugin responsive-design responsive-web-design