What is GSAP?

GSAP (GreenSock Animation Platform) is a JavaScript library for creating high-performance web animations. It handles everything from simple fades to complex, synchronised sequences with precise control and cross-browser compatibility.

By D85 Estudio from Chile.

Why consider GSAP?

• Complex animations made simple - Handles intricate timing, sequencing, and easing with minimal code
• Cross-browser consistency - Works reliably everywhere without browser-specific workarounds
• Performance focused - Optimised for smooth, stutter-free animations, especially on mobile
• Interactive and dynamic - Responds to user actions and adapts based on data
• Strong ecosystem - Extensive documentation and active community support

Key considerations

• Do you need it? - CSS animations might suffice for basic transitions
• Learning curve - Mastering GSAP's features takes time and practice
• Bundle size - External library adds weight to your site
• Client-side only - Animations don't run during server-side rendering

GSAP vs alternatives

For simple hover effects and basic transitions, CSS animations are lighter and faster. For complex sequences, morphing shapes, or data-driven animations, GSAP shines where CSS struggles.

Next.js compatibility

Works well with Next.js but remember:

• Animations only run client-side after hydration
• Adds to your JavaScript bundle size
• Consider lazy loading for animation-heavy components

Making the decision

Choose GSAP when:

• You need complex, interactive animations
• Performance and cross-browser support are crucial
• You're building animation-heavy experiences

Stick with CSS when:

• Animations are simple transitions
• Bundle size is a major concern
• You're prototyping or working with tight deadlines