NetEase Cloud Music Tech Team

Jan 7, 2021 · Frontend Development

How Lottie Turns JSON Into Smooth Web Animations: A Deep Dive

This article explains how Lottie uses JSON exported from Adobe After Effects via the Bodymovin plugin to render vector animations on the web, detailing the export workflow, JSON structure, renderer initialization, layer processing, and the requestAnimationFrame‑driven playback loop with code examples.