A modular minifier, built on top of the PostCSS ecosystem.

css, compress, minify, optimise, optimisation, postcss, postcss-plugin
npm install cssnano@4.0.0-rc.2


Ben Briggs Greenkeeper Bogdan Chadkin Andy Jansson Selwyn Chris Eppstein GU Yiling Ivan Buryak Charlike Mike Reagent Olsten Larck (old Charlike) Evilebot Tnawi Aarni Koskela Sindre Sorhus pigcan Matt Basta Stephen Way Thomas McDonald Maxime Thirouin Steven Vachon Simon Lydell Dmitry Semigradsky Vlad Magdalin Shinnosuke Watanabe Paweł Lesiecki

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A modular minifier, built on top of the PostCSS ecosystem.

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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 via Runkit!




MIT © Ben Briggs