The following are some of the advantages of HTML5. Have a look.
HTML5 has crisp and short syntax and also had improved and smart security features. Thus, it became very simple to manage and write HTML5 code.
HTML5 also came with temporary client-side data storage with the assistance of SQL. This made it possible for users to browse already loaded content even when they are offline.
HTML5 launched the "audio", "video", and "canvas" tags. These tags made it achievable to use multimedia within the sites and make website more dynamic.
HTML5 is cross-platform which indicates there is no requirement of writing different code for different browsers. Hence, it saves a lot of cost and time.
HTML5 launched semantic tags that are very useful in defining the webpages into meaningful sections. They are very useful in search engine optimization.
HTML5 is also multiple devices friendly.