Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HTML5 provides the mobile device users to get richer web applications and improved usability. The new features of HTML5 standardize the use cases and technologies that are common in smartphone-optimized mobile web applications. In today's Mobile Web of WML or XHTML-MP or HTML 4 documents, these features are implemented using proprietary device and browser APIs. With HTML5, advanced web application features are available in all mobile browsers supporting the markup language, using the same standard syntax and displaying the same standard behavior.