Many websites used to be created with flash or include flash contents. The weakness gradually appears especially with the development of html5. Html5 is more mobile friendly. It allows websites to function like mobile apps via offering design capability. Thus, for attracting more mobile visitors, it is necessary to convert flash to html5 animation for those websites created with flash or include flash contents.
More people own smartphones and tend to surf the web with them.
The survey (released on March, 2013) from Pew Internet & American Life Project reveals that 78% of young people, ages 12 to 17, now have mobiles. Nearly half of those are smartphones and a share is increasing steadily. This will exert an effect on how, and where many young people are accessing the Web.