Ranked in these QuestionsQuestion Ranking
Pro Whitespace & final semicolon removal
Trims whitespace inside and around rules, selectors & declarations, plus removes the final semicolon inside every selector.
Pro Comment removal
postcss-discard-comments removes comments in and around rules, selectors & declarations. Note that any special comments marked with ! are kept by default.
Pro Duplicate rules removed
Pro Calc Function
Add needed prefixes and remove unnecessary based on its browsers option and can I use data