gsap-scrolltrigger

Scroll-linked animations are created by using the GSAP ScrollTrigger plugin to synchronize tweens with scroll position. This eliminates manual scroll event listeners and complex coordinate calculations by handling viewport-based triggers automatically.

The best way to pin a hero section is using ScrollTrigger's pinning and scrubbing behaviors. You attach a tween to the scroll progress so the hero stays fixed while its opacity animates directly in response to the user's scroll position.

GSAP ScrollTrigger works with custom smooth-scrolling libraries by utilizing scroller proxies. This integration method ensures performant scroll-based interactions remain synchronized even when bypassing the browser's native scroll behavior.

You can batch viewport-based triggers using ScrollTrigger's advanced orchestration features. Batching groups multiple parallax animations to fire efficiently upon entering the viewport, preventing layout thrashing and optimizing page performance.

You need to register the ScrollTrigger plugin to ensure performant scroll-based interactions and proper integration with GSAP core. Registration is a required prerequisite that initializes the scroll-linked animation behaviors before execution.

Viewport-based element triggers are needed when creating high-end landing pages where sections pin in place and content fades in and out. They allow scroll-driven timelines to execute precisely when elements enter the user's screen.