
Many websites used Adobe’s Flash plug-in for videos, but Flash didn’t work on mobile devices like iPhones.

This meant that it was easier to share GIFs than actual videos, so GIFs stuck around. HTML Didn’t Support Video: Before HTML5 launched in 2014, the HTML standard didn’t support video.(In other words, if this animation doesn’t work, then you’re using an out-of-date version of the Edge browser.) All browsers have supported animated GIFs for a long time now. Need a specific example? Mozilla’s APNG format came out in 2008, but the Microsoft Edge browser only began to support the format this year.

All Browsers Are Different: Browsers have their quirks, and sometimes one stinkin’ browser can prevent the web from moving forward.
