Enable Gzip
To Compress every js and css files and generate a gzipped version (gzip option doesn't remove input file):
<project>
...
<build>
<plugins>
...
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>compress</goal>
</goals>
</execution>
</executions>
<configuration>
<gzip>true</gzip>
</configuration>
</plugin>
...
</plugins>
</build>
...
</project>