A JavaScript library and tool for generating beautiful CSS3 keyframe animations with a simple API.
Bounce.js is a JavaScript library and web tool for generating CSS3 keyframe animations. It solves the problem of creating complex, physics-based animations by providing a simple API to define motion components like scaling, rotation, translation, and skewing, which can be exported as static CSS or applied dynamically to web elements.
Frontend developers and web designers who need to add polished, performant animations to websites or web applications without manually crafting CSS keyframes.
Developers choose Bounce.js for its intuitive chainable API, built-in easing presets, and the ability to generate animations programmatically or as static CSS, saving time over manual animation authoring.
Create beautiful CSS3 powered animations in no time.
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
Methods like scale and rotate are chainable, allowing developers to build complex animations with clean, readable code, as shown in the README examples.
Built-in easing presets like 'bounce' and 'sway' with adjustable bounces and stiffness parameters enable natural, spring-like motion without manual keyframe crafting.
Animations can be defined as reusable CSS keyframes or directly applied to DOM elements with options for looping and callbacks, providing versatility for different use cases.
Leverages CSS3 animations, which are hardware-accelerated, ensuring smooth performance on modern browsers, as highlighted in the project philosophy.
Only offers four easing presets (bounce, sway, hardbounce, hardsway), which may not suffice for projects requiring diverse or custom animation curves.
Requires browsers to support both 3D transforms and keyframe animations, making it unsuitable for environments with legacy browser requirements, as noted in the support section.
Once exported as CSS keyframes, animations are static and cannot be easily modified at runtime, limiting dynamic adaptation based on user interactions.