A modular minifier, built on top of the PostCSS ecosystem.
cssnano is a modern, modular compression tool written on top of the PostCSS ecosystem, which allows us to use a lot of powerful features in order to compact CSS appropriately.
Our preset system allow you to load cssnano in a different configuration depending on your needs; the default preset performs safe transforms, whereas the advanced preset performs more aggressive transforms that are safe only when your site meets the requirements; but regardless of the preset you choose, we handle more than whitespace transforms!
Optimisations range from compressing colors & removing comments, to discarding overridden at-rules, normalising unicode-range descriptors, even mangling gradient parameters for a smaller output value! In addition, where it's made sense for a transform, we've added Browserslist to provide different output depending on the browsers that you support.
For further details check out the website:
You can now try cssnano online!
See CONTRIBUTING.md.
This project exists thanks to all the people who contribute. [Contribute].
Thank you to all our backers! 🙏 [Become a backer]
Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]
MIT © Ben Briggs
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