Internet is omnipotent these days but what is more important than website is the web application. Most of the business users as well as a large number of common users are usually on portable or mobile devices and they don’t always have an access to a network. With HTML5’s Application Cache, you can provide them with all or some of the functionality they would have online, no matter where they go. To undertake the process of building a cache with HTML5 for offline access, first of all, requires using a cache manifest file. This is quite simple!