Learn Lottie - 10 Code Examples & CST Typing Practice Test
Lottie is an open-source animation library that renders Adobe After Effects animations in real-time on web, mobile, and desktop platforms. It allows designers and developers to ship high-quality animations as JSON files exported via Bodymovin.
Learn LOTTIE with Real Code Examples
Updated Nov 26, 2025
Learning Path
Learn After Effects basics
Export animation via Bodymovin plugin
Load JSON into web or mobile project using Lottie
Control playback, speed, and looping
Implement interactive animations via dynamic properties
Skill Improvement Plan
Week 1: simple animation playback in web/mobile
Week 2: learn JSON structure and property overrides
Week 3: integrate Lottie into app components
Week 4: create interactive animations triggered by user input
Week 5: optimize animations for performance and bundle size
Interview Questions
How does Lottie render After Effects animations on web/mobile?
Explain JSON-based animation workflow using Bodymovin.
How would you dynamically control a Lottie animation property?
Compare Lottie vs GIF in terms of performance and quality.
What are the limitations of using Lottie in production apps?
Cheat Sheet
lottie.loadAnimation({container, path, renderer, loop, autoplay})
animation.play()
animation.pause()
animation.stop()
animation.setSpeed(speed)
Books
Mastering Lottie Animations
Interactive Motion Design with Lottie
Cross-Platform Animations using Lottie
High-Fidelity UI Animation Patterns
JSON Animation Workflows for Developers
Tutorials
Getting started with Lottie-web
Creating Lottie animations in Flutter
Dynamic property control
Integrating Lottie in React/Vue/iOS/Android
Optimizing Lottie JSON files
Official Docs
https://airbnb.io/lottie/
https://docs.lottiefiles.com/
Community Links
LottieFiles community
GitHub Lottie repositories
Airbnb design team resources
Reddit / StackOverflow discussions
Flutter, iOS, Android dev forums
Community Support
LottieFiles community
GitHub repositories for web and mobile SDKs
Designer forums for AE to Lottie workflow
Slack/Discord channels for mobile and web developers
Official Airbnb Lottie resources
Frequently Asked Questions about Lottie
What is Lottie?
Lottie is an open-source animation library that renders Adobe After Effects animations in real-time on web, mobile, and desktop platforms. It allows designers and developers to ship high-quality animations as JSON files exported via Bodymovin.
What are the primary use cases for Lottie?
App onboarding animations. Micro-interactions (buttons, loaders, checkmarks). Marketing website animations. Animated illustrations and icons. Interactive storytelling and tutorials
What are the strengths of Lottie?
Reduces app bundle size compared to GIF/video animations. Scalable vector-based animations. Interactive animations controllable via code. Seamless designer-to-developer workflow. High-quality playback across multiple platforms
What are the limitations of Lottie?
Requires After Effects for creation. Some complex AE effects may not export properly. JSON files can become large for very complex animations. Limited real-time physics or dynamic simulations. Editing requires re-export from After Effects
How can I practice Lottie typing speed?
CodeSpeedTest offers 10+ real Lottie code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.