rlugojr/cssnano

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

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


cssnano is a modular minifier that aims to utilise small modules from the PostCSS ecosystem, rather than being an all-encompassing module that may be difficult to contribute to. Because it is written on top of PostCSS, it is able to do more than simple whitespace transforms - including advanced optimisations such as custom identifier reduction, z-index rebasing, and adjacent selector merging.

Note that cssnano enables aggressive optimisations by default, which might not always be what you want. Set options.safe to true if you want to disable this. In future versions, only safe options will be enabled by default, starting from version 4.

For further details check out the website:

• Installation guide for your build process.
• Full list of optimisations.
• Customise the output (options documentation).

You can now try cssnano online via Runkit!

Contributing

See CONTRIBUTING.md.

Links

Please help to support this project by purchasing a cssnano sticker.

License

MIT © Ben Briggs