Framer Motion

Framer Motion is a production-ready motion and animation library for React created by the Framer team in 2019, providing declarative animations through a component-based API that integrates seamlessly with React, enabling complex animations, gestures, scroll-linked effects, layout transitions, and drag interactions with minimal code, adopted by companies including Linear, Vercel, andPitch for polished user interface animations in production applications. The declarative animation API uses motion components that accept animate, initial, exit, and transition props, with the animation values automatically interpolated and rendered through a high-performance animation engine that uses the browser compositor thread for transform and opacity animations, achieving sixty frames per second without blocking the main thread, while spring physics with configurable stiffness, damping, and mass create natural-feeling organic motion. The layout animations automatically animate elements between positions when the layout changes due to data updates, list reordering, or conditional rendering, with shared layout animations through layoutId that smoothly transition an element between different locations in the component tree, creating the polished effect of an element flying from one position to another. The gesture system provides drag with constraints, momentum, and elastic boundaries, pan and pinch gestures for touch interaction, hover and tap animations, and scroll-linked animations through useScroll that drive animation progress based on scroll position. The exit animations through AnimatePresence enable smooth enter and exit transitions for elements being added or removed. The SVG path drawing through pathLength. Designed for React developers building animated interfaces.