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cssnano-webpack-plugin

This plugin uses cssnano to optimize and minify your CSS.

Fully integrated in Webpack ecosystem: based on compiler hooks, respecting default Webpack output sources and compatible with other plugins like *SourceMapDevToolPlugin* or *webpack-subresource-integrity*.

Just like optimize-css-assets-webpack-plugin but more accurate with source maps and assets using query string.

Works with Webpack 4+.

Getting Started

First, install cssnano-webpack-plugin:

Then add the plugin to your webpack configuration. For example:

webpack.config.js

This will enable CSS optimization only in production mode. If you want to run it also in development, put the plugin configuration in the plugins option array.

Options

test

Type: String|RegExp|Array - default: /\.css(\?.*)?$/i

Test to match files against.

include and exclude options are also supported (see module rules).

sourceMap

Type: Boolean|Object - default: false

Enable (and configure) source map support. Use PostCss SourceMap options. Default configuration when enabled: { inline: false }.

cssnanoOptions

Type: Object - default: { preset: 'default' }

Cssnano optimisations options.

Examples

Use sourcemaps

Don't forget to enable sourceMap options for all loaders.

Remove all comments

Remove all comments (including comments starting with /*!).

License

MIT

Description from the npm listing.