Node.js library for CSS validation
a CSS selector compiler/engine
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
Selectors decision tree - choose matching selectors, fast
Algorithms to help you parse CSS from an array of tokens.
CSS minifier with structural optimisations
Tokenize CSS
Solve CSS math expressions
Powerful and compliant CSS selector parser.
Parse CSS color values
parse a css color string
Use oklab() and oklch() color functions in CSS
A CSS Modules transform to extract local aliases for inline imports
The custom `sort` method (mobile-first / desktop-first) of CSS media queries for `postcss-sort-media-queries`, `css-mqpacker` or `pleeease` (which uses css-mqpacker) or, perhaps, something else ))
CSS syntax patches for CSS tree
A CSS Modules transform to extract export statements from local-scope classes
Color helpers to ease transformation between formats, gamut, etc
Inlines img, script and link tags into the same file.
A esbuild plugin to bundle css modules into js(x)/ts(x), based on extremely fast [Lightning CSS](https://lightningcss.dev/)
css-animation
Normalize unicode-range descriptors, and can convert to wildcard ranges.
CSS selectors parser
Display resolution-dependent images using the image-set() function in CSS
PostCSS plugin to transform W3C font-variant properties to more compatible CSS (font-feature-settings)