There are many Flash capabilities that have no direct counterpart in HTML5 (see Comparison of HTML5 and Flash). However, HTML5 on its own cannot be used for animation or interactivity – it must be supplemented with CSS3 or JavaScript. Both include features for playing audio and video within web pages, and for using Scalable Vector Graphics. While some features of HTML5 are often compared to Adobe Flash, the two technologies are very different. So I don’t have to remember to keep any standalone Flash plugins up to date with the latest security patches. The advantage to that security-wise for me is that Chrome updates include the latest secure version of the Flash plugin. If I run across a site that needs Flash to display properly, I then open it up in Chrome (not my default browser). I do not install or enable the Flash plugin in any of my browsers, with the exception that Google Chrome comes with a Flash plugin pre-installed. I find those sites that are lagging behind to be annoying, because you still need the Flash plugin to play the Flash content. Some websites still host Flash content, but eventually they will drop it in favor of the new open standard. Flash is being replaced by the open format HTML5 video element, with full support by all major browsers, so no plugin is required for HTML5 content playback:
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