HTML5 is basically a combination of HTML and XHTML to encourage more interoperable implementations; its extentions, improves and rationalize the markup available for documents. HTML5 also used for cross-platform mobile applications having many features with the consideration of being able to run on low-powered devices such as smartphones and tablets. The features include new video, audio and canvas elements, as well as the integration of scalable vector graphics (SVG) content (replacing generic tags)..