Still now stops the animations that scripts draw frame by frame. Text and images that zoom, slide or fade into place as a page loads — and the scroll-driven effects on modern marketing sites — simply appear in their final position instead of moving there. Animations hidden inside web components are covered too, along with animations a page starts long after it has loaded, like a menu or dialog that slides closed. Videos stay paused more reliably. Players that kept trying to restart themselves could flicker rapidly; Still now refuses the playback up front, so the video sits still until you press play.