At this point in my life, I just don't have time. I basically use either mp4 or PNG for all web "images/animation" when doing web pages. I don't detect browsers or the like. Unless there is some revolutionary new image/video tech, I'll stick with them for the foreseeable future. I only bother with JPEG when it's straight from the phone/camera and I don't want any reduction in quality from the original high rez.