Adobe announced that after December 31st, 2020, it will no longer support the flash player plug-in. Following this announcement, Google, Microsoft, and Mozilla also announced that the Flashplayer plug-in will be disabled by default in their browsers by the end of 2020.
Converting Flash to HTML5 is necessary as Flash-based content will no longer function after 2020.
Adobe Flash Player was created for the PC era, but with the world rapidly transitioning to mobile and on-the-go learning, Flash falls short in many ways.