ScrollTrigger is the GSAP plugin that ties animation to the scrollbar: it can pin a section while a timeline plays, scrub an animation to the scroll position, or fire a reveal when an element enters the view. Most award-style scroll sites rely on it.
The examples below are real effects from the library, picked across different kinds of scroll work. Each one runs live in the page preview, has Playground knobs for the values that matter, and a reduced-motion fallback. Subscribers get the exact prompt and the source; everyone can see how it behaves.
If you are new to it, start with a reveal or a scrubbed text effect, then move to pinned sequences. If you build with an AI tool, a prompt with exact timings, eases and trigger points matters far more than a loose description, which is the point of the prompts here.