A website that does not require a browser plug-in in order to view it. For example, many websites contain Flash videos, and a Flash plug-in is required in the browser to play them. Users prefer plug-in free solutions for several reasons. When a new computer is purchased, the necessary plug-ins have to be installed. Users often come across a website that requires a newer version of the plug-in they have, and whenever a new version of the browser itself is updated, the existing plug-ins may not be compatible with the new browser version.
HTML5 to the Rescue!
One of the major features of the HTML5 Web page format is that it natively supports most of the functions that normally require browser plug-ins. See browser plug-in