The definition of HTML5 is higher and fast approaching and getting world wide web design popularity these days. HTML5 is currently under development as the next major revision of the HTML standard. HTML5 is a standard for structuring and presenting content on the World Wide Web.Most are familiar with the new tags like header, section and footer and everybody is aware of the new video tags. There is no dependence on third party browser like plug in such as adobe, Microsoft Silverlight, and Google Gears.
Advantages of html 5:
1 short hand coding
2 easy to do on page optimization seo .
3 w3c standard validation
4 easy crawling by search engine and this have no error.
5 we can use video and no dependency on third party browsers.
6 no longer time of loading a web page.