What the inspector reports
| Measure | What it tells you |
|---|---|
| Tweens that ran | How much GSAP animation actually played while the page was open and scrolled |
| ScrollTriggers | How many animations are driven by scroll position |
| Scrubbed | How many of them follow the scrollbar back and forth |
| Pinned | How many hold a section in place while they play |
| Easings and durations | The feel of the motion: sharp and quick, or long and soft |
Counting what ran, rather than what is in the bundle, matters: a site can ship GSAP and never use it on the page you are looking at. The longer explanation is in how to check if a website uses GSAP.
How to use it
- Paste the page with the effect. The animation you liked may be on a case study or a product page, not the homepage.
- Read the verdict first. It says whether GSAP ran and whether ScrollTrigger was involved.
- Look at scrubbed and pinned. Many scrubbed triggers point to scroll-driven storytelling. Pinned triggers point to sticky sections.
- Read the easings. Names such as
power3.outorexpodescribe how the motion starts and settles. They are the quickest way to match a feel. - Rebuild it. Our guide to recreating a GSAP scroll animation walks through the steps.
Examples from real sites
Two stored captures from 21 October 2026, taken with the same code the live tool runs. Use the example buttons above to open them.
| Site | Tweens | ScrollTriggers | Scrubbed / pinned | Durations |
|---|---|---|---|---|
| gsap.com | 169 | 21 | 3 / 1 | 0.5s to 4s |
| enrichr.dev | 286 | 112 | 12 / 0 | 0.2s to 1.4s |
The two sites use GSAP very differently. gsap.com runs fewer, longer animations and pins one section. enrichr.dev runs many short ones, mostly small reveals triggered as you scroll. The same library, a different feel.
What the numbers mean for a rebuild
- High tween count, low trigger count: most motion is time-based (on load or hover), so look at timelines.
- High trigger count: motion is tied to scroll. Expect
startandendpositions to matter, and think about a smooth-scroll layer such as Lenis. - Scrubbed triggers: the animation needs a linear or near-linear ease, since the scrollbar is the clock.
- Pinned triggers: plan the page height around the pinned section, or the layout will jump.
Other free tools
FAQ
How do I see the GSAP animations on a website?
Paste the address above. Enrichr loads the page in a real browser, scrolls through it so scroll-triggered animation starts, and reports how many GSAP tweens and ScrollTriggers ran, how many were scrubbed or pinned, and the easings and durations used.
What is the difference between a tween and a ScrollTrigger?
A tween is one animation of one or more properties, for example fading an element in over 0.8 seconds. A ScrollTrigger is a rule that starts, scrubs or pins an animation based on scroll position. A page can have many tweens and few ScrollTriggers, or the reverse.
What does scrubbed mean?
A scrubbed ScrollTrigger ties the animation to the scrollbar: scrolling forward plays it forward and scrolling back plays it in reverse. A non-scrubbed trigger just starts the animation once when the element reaches a point.
What does pinned mean?
A pinned ScrollTrigger holds an element in place while the page scrolls past, usually while a longer animation plays. It is how many sites build a sticky storytelling section.
Why does it say GSAP did not run when the site looks animated?
The motion is probably CSS transitions, CSS keyframes or another library such as Framer Motion. Check the animation library checker for the whole stack. Also try the exact page with the effect: a case study can animate where the homepage does not.
Can it give me the exact easing and timing of one animation?
The free tool reports the summary. Connected to Claude, ChatGPT or Cursor, Enrichr returns each tween's target, duration, easing and delay, and each ScrollTrigger's start, end, scrub and pin settings.
Is it free?
Yes. gsap.com, enrichr.dev and a few other sites answer instantly from stored captures, and your first fresh lookup of any other site is free without an account.
Is GSAP free to use now?
GSAP is free for standard use, including commercial sites, since Webflow acquired it. Check the current licence terms for the plugins you plan to use.