wro4j is an open source, multiplatform and freely distributed software project implemented in Java and designed to help web developers who want to effortlessly improve the page loading time of their web applications.
It will make sure that all your JavaScrip and CSS files are well organized, helps you to minify them for faster load times, either at build-time using a Maven plugin or at run-time using a simple filter.
Features at a glance
It is lightweight, easy to setup, easy to understand, preserves licence/copyright headers, supports CSS variables, supports CSS meta frameworks, supports CSS code validation, and supports CSS URL rewriting.
Includes all the modern and powerful web tools
It is a collection of modern and powerful web tools tailored for web developers. Among some of the most popular ones, we can mention JsHint, JsMin, CssLint, Google Closure compressor, UglifyJs, YUI Compressor, Dojo Shrinksafe, JSON Compression, Css Variables Support, Less, CoffeeScript and Sass.
Getting started with wro4j
To use the wro4j program in your web app, you must first add WroFilter to the web.xml file, then create the wro.xml file, and use optimized resources. Detailed usage examples are provided at a glance on the project’s homepage (see link below), as well as on its GitHub page. Official documentation is available at http://code.google.com/p/wro4j/.
Under the hood and supported operating systems
The application is written entirely in the Java programming language, which means that it is cross-platform software, supported on any operating system where the Java Runtime Environment (JRE) is available, including GNU/Linux, Mac OS X and Microsoft Windows. At the moment, the program has been successfully tested on both 32-bit and 64-bit computers.