Fault-tolerant CSS parser for PostCSS
Convert modern CSS into something browsers understand
PostCSS plugin to reduce calc()
Discard empty rules and values with PostCSS.
Normalize multiple value display syntaxes into single values.
Normalize unicode-range descriptors, and can convert to wildcard ranges.
Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset
Convert two value syntax for repeat-style into one value.
Reduce transform functions with PostCSS.
Minify at-rule params with PostCSS
Normalize CSS animation/transition timing functions.
Trim whitespace inside and around CSS rules & declarations.
Use the :focus-visible pseudo-selector in CSS
Normalize keyword values for position into length values.
PostCSS plugin to transform :not() W3C CSS level 4 pseudo class to :not() CSS level 3 selectors
Normalize URLs with PostCSS
Ensure CSS selectors are unique.
Nest rules inside each other in CSS
Use unquoted format on @font-face CSS definitions.
Use a place-* shorthand for align-* and justify-* in CSS
PostCSS plugin to transform percentage-based opacity values to more compatible floating-point values.
Use two values display syntax for inner and outer display types.
Use the :focus-within pseudo-selector in CSS
SCSS parser for PostCSS