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: