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PostCSS

Organization

Public GitHub footprint of PostCSS

@postcss
View profile on GitHub

PostCSS and plugins based on it

57

Public repositories

64,955

Total stars

427

Followers

The PostCSS organization has a notable presence on GitHub, focusing primarily on JavaScript and TypeScript. It offers a wide range of repositories, including essential tools like postcss, autoprefixer, and postcss-import, which are widely used in the CSS development community.

Top languages

JavaScript 52TypeScript 2

Public repositories

postcss

28,964

Transforming styles with JS plugins

TypeScript
Updated Jun 12, 2026

autoprefixer

22,249

Parse CSS and add vendor prefixes to rules by Can I Use

JavaScript
Updated Jun 12, 2026

postcss-import

1,408

PostCSS plugin to inline at-import rules content

JavaScript
Updated Jun 11, 2026

postcss-nested

1,197

PostCSS plugin to unwrap nested rules like how Sass does it.

JavaScript
Updated Jun 10, 2026

postcss-100vh-fix

951

PostCSS plugin to fix height/min-height: 100vh on iOS

JavaScript
Updated Jun 11, 2026

postcss-cli

857

CLI for postcss

JavaScript
Updated May 20, 2026

gulp-postcss

764

Pipe CSS through PostCSS processors with a single parse

JavaScript
Updated Apr 29, 2026

sugarss

719

Indent-based CSS syntax for PostCSS

JavaScript
Updated Apr 21, 2026

postcss-scss

673

SCSS parser for PostCSS.

JavaScript
Updated Apr 24, 2026

postcss-js

670

PostCSS for React Inline Styles, Free Style and other CSS-in-JS

JavaScript
Updated Jun 11, 2026

postcss-load-config

664

Autoload Config for PostCSS

JavaScript
Updated Jun 2, 2026

postcss-custom-properties

595

Use Custom Properties in CSS

JavaScript
Updated May 9, 2026

postcss-bem-linter

577

A BEM linter for postcss

JavaScript
Updated Nov 29, 2025

postcss-mixins

487

PostCSS plugin for mixins

JavaScript
Updated Apr 21, 2026

postcss-simple-vars

428

PostCSS plugin for Sass-like variables

JavaScript
Updated Apr 24, 2026

postcss-url

382

PostCSS plugin to rebase url(), inline or copy asset.

JavaScript
Updated May 22, 2026

postcss-color-function

323

PostCSS plugin to transform W3C CSS color function to more compatible CSS

JavaScript
Updated Oct 2, 2025

postcss-media-minmax

302

Writing simple and graceful Media Queries!

JavaScript
Updated Jun 3, 2026

postcss-plugin-boilerplate

226

PostCSS Plugin Boilerplate

JavaScript
Updated May 8, 2026

postcss-calc

221

PostCSS plugin to reduce calc()

JavaScript
Updated Jun 11, 2026

postcss-selector-parser

213

A CSS selector parser, integrates with postcss but does not require it.

JavaScript
Updated Jun 11, 2026

postcss-dark-theme-class

163

PostCSS plugin to make dark/light theme switcher by copying styles from media query to special class

JavaScript
Updated Apr 21, 2026

postcss-reporter

162

Log PostCSS messages in the console

JavaScript
Updated Jun 9, 2026

postcss-easings

156

PostCSS plugin to replace easing names to cubic-bezier()

JavaScript
Updated Apr 24, 2026

postcss-use

151

Enable PostCSS plugins directly in your stylesheet.

JavaScript
Updated Mar 25, 2026

postcss-value-parser

147

Transforms css values into the tree

JavaScript
Updated Jun 5, 2026

postcss-safe-parser

126

Fault tolerant CSS parser for PostCSS

JavaScript
Updated Apr 21, 2026

postcss-focus

117

PostCSS plugin to add :focus selector to every :hover for keyboard accessibility

JavaScript
Updated Apr 24, 2026

benchmark

116

PostCSS benchmarks

JavaScript
Updated May 21, 2026

postcss-devtools

91

Log execution time for each plugin in a PostCSS instance.

JavaScript
Updated Oct 2, 2025

postcss.org

80

Official website for PostCSS

JavaScript
Updated Mar 5, 2026

postcss-browser-reporter

77

Plugin to display warning messages right in your browser

JavaScript
Updated Feb 12, 2026

postcss-color-rebeccapurple

61

PostCSS plugin to transform rebeccapurple color to rgb()

JavaScript
Updated Feb 27, 2025

postcss-deno

57

Postcss for Deno

JavaScript
Updated Aug 27, 2025

postcss-brand-colors

56

PostCSS plugin to insert branding colors of all the major companies

JavaScript
Updated Feb 13, 2026

postcss-size

52

PostCSS plugin for size shortcut

JavaScript
Updated Apr 24, 2026

postcss-will-change

51

PostCSS plugin to insert 3D hack before will-change property

JavaScript
Updated May 17, 2026

postcss-color-rgba-fallback

50

PostCSS plugin to transform rgba() to hexadecimal.

JavaScript
Updated Jan 25, 2023

postcss-selector-matches

44

PostCSS plugin to transform :matches() W3C CSS pseudo class to more compatible CSS (simpler selectors)

JavaScript
Updated Jan 17, 2023

postcss-smooth-shadow

37

PostCSS plugin to generate more realistic smooth shadows

JavaScript
Updated Apr 21, 2026

postcss-plugin-context

36

Limit a PostCSS processor to a local stylesheet context.

JavaScript
Updated May 2, 2024

postcss-color-hex-alpha

28

Use 4 & 8 character hex color notation in CSS

JavaScript
Updated Jan 28, 2023

postcss-color-gray

27

Use the gray() color function in CSS

JavaScript
Updated Aug 23, 2023

brand

25

PostCSS branding files

JavaScript
Updated Oct 2, 2025

postcss-font-variant

24

PostCSS plugin to transform W3C CSS font variant properties to more compatible CSS (font-feature-settings)

JavaScript
Updated Jan 21, 2025

postcss-filter-plugins

23

Exclude/warn on duplicated PostCSS plugins.

JavaScript
Updated Jun 9, 2026

postcss-parser-tests

23

Base tests for every PostCSS CSS parser

JavaScript
Updated Apr 21, 2026

postcss-color-hwb

21

PostCSS plugin to transform W3C CSS hwb() function to more compatible CSS (rgb() or rgba()).

JavaScript
Updated Jan 15, 2023

eslint-config-postcss

18

An ESLint shareable config for postcss and plugins

JavaScript
Updated Oct 16, 2023

postcss-relative-opacity

15

PostCSS plugin to add opacity to any colors with Relative Color Syntax

JavaScript
Updated Aug 24, 2025

postcss-plugin-suggestion-box

14

Suggestion box for PostCSS plugins

Unknown Language
Updated Jan 17, 2023

fly-postcss

10

UNMAINTAINED

Unknown Language
Updated Jan 17, 2023

postcss-fail-on-warn

8

PostCSS plugin throws a error on any warning from previous PostCSS plugins.

JavaScript
Updated Apr 2, 2026

postcss-sharec-config

6

Best parctices and configs from PostCSS plugin

Unknown Language
Updated Mar 17, 2026

postcss-at-rule-parser

5

A modern CSS at rule parser in PostCSS.

TypeScript
Updated Oct 16, 2023

postcss-color

5

DEPRECATED - PostCSS plugin to transform latest W3C CSS color module syntax to more compatible CSS

JavaScript
Updated Jan 17, 2023

postcss-deno-import

3

postcss-import plugin for Deno

JavaScript
Updated Jun 7, 2024

Frequently asked questions

What does postcss build on GitHub?

PostCSS builds a variety of tools and plugins aimed at enhancing CSS processing. Notable repositories include postcss for transforming styles and autoprefixer for adding vendor prefixes, catering to developers' needs in CSS development.

Which programming languages does postcss use?

PostCSS primarily uses JavaScript and TypeScript across its repositories. These languages are integral to the functionality and performance of its various plugins and tools available on GitHub.

Are postcss's repositories public?

Yes, all of postcss's repositories are public on GitHub. This transparency allows developers to access, contribute to, and audit the codebase, fostering community collaboration and ensuring security.

Is this exposure intended?

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