For web designers, publishers and developers, one cannot stress enough the importance of keeping web pages or web applications as lightweight as possible. There are various design strategies and client/server-side techniques that can be exploited to achieve this goal.
Install YUI Compressor on Linux
The YUI Compressor is written in Java, and its pre-built JAR file (as well as its source code) is available for download. Here we are going to use the JAR executable.
First, install Java run-time, which is required to run YUI Compressor.
Download and install YUI Compressor as follows.
$ sudo wget https://github.com/yui/yuicompressor/releases/download/v2.4.8/yuicompressor-2.4.8.jar -P /usr/share/java
Create a start-up script named yc, with the following content.
#!/bin/sh java -jar /usr/share/java/yuicompressor-2.4.8.jar "$@"
Now you can use yc command to launch YUI Compressor.
YUICompressor Version: 2.4.8 Usage: java -jar yuicompressor-2.4.8.jar [options] [input file] Global Options -V, --version Print version information -h, --help Displays this information --type
To compress or minify a CSS file, use the following command:
Check how much size is reduced before and after CSS compression:
756 1097 14007 default.css 0 163 5745 default-min.css
In this example, the total byte count for the original CSS file is reduced from 14KB to 5.7KB after compression.
A compressed/minified CSS file looks like the following:
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