# cssnano

**Repository Path**: mirrors_opencollective/cssnano

## Basic Information

- **Project Name**: cssnano
- **Description**: A modular minifier, built on top of the PostCSS ecosystem.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-09-25
- **Last Updated**: 2026-05-24

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

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    <img width="360" src="https://rawgit.com/cssnano/cssnano/master/media/logo.svg" alt="cssnano">
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> A modular minifier, built on top of the [PostCSS](https://github.com/postcss/postcss) ecosystem.

[![NPM version](https://img.shields.io/npm/v/cssnano.svg)](https://www.npmjs.org/package/cssnano)
[![Build Status](https://dev.azure.com/cssnano/cssnano/_apis/build/status/cssnano.cssnano?branchName=master)](https://dev.azure.com/cssnano/cssnano/_build/latest?definitionId=3&branchName=master)
[![codecov](https://codecov.io/gh/cssnano/cssnano/branch/master/graph/badge.svg)](https://codecov.io/gh/cssnano/cssnano)
[![Gitter](https://img.shields.io/badge/Gitter-Join_the_PostCSS_chat-brightgreen.svg)](https://gitter.im/postcss/postcss)

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](https://github.com/ai/browserslist)
to provide different output depending on the browsers that you support.

For further details check out the [website](http://cssnano.co/):

- [Installation guide for your build process](http://cssnano.co/guides/getting-started).
- [Full list of optimisations](http://cssnano.co/optimisations/).

You can now [try cssnano online](https://cssnano.co/playground/)!

## Contributing

See [CONTRIBUTING.md](CONTRIBUTING.md).

## License

MIT © [Ben Briggs](http://beneb.info)