Web Animations API
Lets you create animations that are run in the browser, as well as inspect and manipulate animations created through declarative means like CSS.
WebP image format
Image format (based on the VP8 video format) that supports lossy and lossless compression, as well as animation and alpha transparency. WebP generally has better compression than JPEG, PNG and GIF and is designed to supersede them. [AVIF](#feat=avif) is designed to supersede WebP.
Method of using SMIL animation in web pages
CSS at-rule: `@media`: `-webkit-animation` media feature