Color helpers to ease transformation between formats, gamut, etc

PostCSS loader for webpack

Use Custom Media Queries in CSS

Reduce initial definitions to the actual initial value, where possible.

Autoload Config for PostCSS

PostCSS plugin to unwrap nested rules like how Sass does it

Minify selectors with PostCSS.

Gamut map css colors to fit display specific gamuts

Mix any number of colors with the color-mix function in CSS

Seamless integration between Rollup and PostCSS

PostCSS plugin to discard overridden @keyframes or @counter-style.

Minify colors in your CSS files with PostCSS.

Fault-tolerant CSS parser for PostCSS

Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset

Convert modern CSS into something browsers understand

PostCSS plugin to reduce calc()

Discard empty rules and values with PostCSS.

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

Normalize unicode-range descriptors, and can convert to wildcard ranges.

Convert two value syntax for repeat-style into one value.