Minify Maven Plugin

The Minify Maven Plugin is a plugin that allows you to combine and minimize CSS and Javascript files, producing a file minified with the Javascript style sheet and resource files that can be reused throughout the project.

According to the project page, this plugin uses the YUI Compressor and the Google Closure Compiler but there is an abstraction layer between these tools that allows adding new features in the future.

Information on benefits and examples of use can be found at project page.