Anime.js is a fast and flexible JavaScript animation library designed to help developers create dynamic animations for web applications using a single, unified API. It works across multiple types of targets, including CSS properties, DOM attributes, SVG elements, and even plain JavaScript objects, making it highly versatile for frontend development.

The library provides an intuitive yet powerful API that allows developers to define animations using keyframes, easing functions, and per-property parameters. It simplifies the process of animating complex sequences while still offering fine-grained control over timing, delays, and playback behavior.

Anime.js includes built-in utilities for advanced animation scenarios such as timelines for sequencing animations, staggering functions for creating coordinated motion effects, and scroll-based triggers for interactive experiences. It also features specialized tools for SVG animations, including shape morphing, motion paths, and line drawing.

The library is lightweight and modular, allowing developers to import only the features they need to keep bundle sizes small. It is commonly used in modern web applications, landing pages, and interactive UI designs where smooth, customizable animations are required without relying solely on CSS or heavier frameworks.

Anime.js is open-source and widely adopted in the frontend ecosystem as a flexible alternative to CSS animations and more heavyweight animation engines.

Key features include:

• Unified API for animating CSS, SVG, DOM, and JavaScript objects
• Timeline system for sequencing and synchronizing animations
• Built-in easing functions, keyframes, and per-property controls
• Staggering utilities for coordinated multi-element animations
• Scroll-based animation triggers and callbacks
• SVG animation tools including morphing and motion paths

Common use cases include:

• Creating interactive UI animations
• Building animated landing pages
• Designing motion-rich user interfaces
• Animating SVG graphics
• Implementing scroll-based storytelling experiences

Anime.js is developed and maintained by Julian Garnier as an open-source JavaScript animation library.