A JavaScript motion graphics library for creating fast, retina-ready, and customizable web animations.
mo · js is a JavaScript motion graphics library for the web that provides a fast, retina-ready, and modular solution for creating animations. It offers a declarative API for complete control over animation customization, enabling developers to build visually engaging motion graphics that enhance user experience and content.
Web developers and motion designers who need to create complex, high-quality animations for websites, applications, or interactive media, particularly those using modern JavaScript bundlers.
Developers choose mo · js for its unique declarative API that prioritizes ease of customization and precise control, along with built-in components like shapes, swirls, and bursts for quick starts, and companion tools like @mojs/player and @mojs/curve-editor for natural animation crafting.
The motion graphics toolbelt for the web
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The declarative API provides complete customization over animations, making it easy to tweak timing, easing, and properties for precise motion graphics, as emphasized in the intro.
Includes ready-to-use elements like shapes, swirls, bursts, and staggers, allowing developers to start animating quickly without building from scratch, as listed in the key features.
Designed for modern bundlers with flexible integration, and ensures high-quality graphics on high-resolution displays, enhancing visual fidelity across devices.
Supports tools like @mojs/player and @mojs/curve-editor for intuitive animation crafting and playback, as mentioned in the user guide and tool integration section.
Officially supports only modern browsers like Chrome 49+ and Firefox 70+, with no guarantees for older versions, which can be a barrier for projects needing wider compatibility.
While CDN is available, the README encourages using bundlers for advantages like compression, adding complexity for simple projects or those not using build tools.
Has a different syntax and structure compared to other animation libraries, which might require more time to master, especially for those familiar with alternatives like GSAP.