🏆 Best AOS (Animate on Scroll) Libraries in 2025

#animation #css #frontend #html

Scroll animations can make your website more engaging, but which animate on scroll library should you use? Some are too heavy, others lack flexibility. After testing the top options, here’s my ranking of the best AOS libraries—and why Trig.js is the #1 choice.

🔍 Top AOS Libraries Compared

Library	Performance	Ease of Use	File Size	Best For
1. Trig.js	Ultra-fast (CSS-based)	Easiest setup	~4KB	Advanced Control
2. AOS.js	Good	Easy	~6KB	Basic animations
3. ScrollTrigger (GSAP)	High but heavy	Complex	100KB+	Advanced control
4. Sal.js	Fast	Simple	~3KB	AOS alternative
5. WOW.js	OK	Easy	~7KB	Animate.css users
6. Lenis	Smooth	Moderate	Medium	Smooth scrolling
7. Locomotive Scroll	Smooth	Moderate	Large	Full-page scroll effects

🏆 Why Trig.js is #1

Unlike other libraries, Trig.js is CSS-powered, meaning faster animations and better performance without JavaScript overhead. It’s also super lightweight (~4KB) and ridiculously easy to use.

✅ CSS-based = Ultra-fast
✅ Lightweight & optimized (~4KB)
✅ Easiest setup—just add data-trig
✅ Predefined animations with Trig-Animations.css

Also check out our VS posts:
GSAP vs. ScrollMagic vs. Trig.js
Trig.js vs AOS.js vs ScrollTrigger

👉 Try Trig.js today:

Warp is the #1 coding agent.

Warp outperforms every other coding agent on the market, and gives you full control over which model you use. Get started now for free, or upgrade and unlock 2.5x AI credits on Warp's paid plans.

Download Warp