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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.

View all 10 Lottie code examples →
Simple Lottie AnimationLottie Loop AnimationLottie Play OnceLottie Control AnimationLottie with Multiple AnimationsLottie Hover PlayLottie Reverse AnimationLottie Speed ControlLottie Click TriggerLottie Segment Animation

Learn LOTTIE with Real Code Examples

Updated Nov 26, 2025

Explain

Lottie uses JSON-based animation files exported from After Effects.

It renders animations natively using SVG, Canvas, or WebGL depending on the platform.

Supports rich motion graphics without large video files or GIFs.

Integrates easily with web (React, Vue, plain JS), iOS, Android, and Flutter apps.

Enables interactive animations controlled via code (play, pause, loop, speed, and dynamic properties).

Core Features

Bodymovin JSON export from After Effects

Renderers for SVG, Canvas, WebGL, and native mobile layers

Animation controls: play, pause, stop, loop, speed

Dynamic property overrides at runtime

Framework integrations (React, Vue, Flutter, iOS, Android)

Basic Concepts Overview

Animation JSON -> exported file with AE animation data

Renderer -> renders animation on platform (SVG/Canvas/WebGL)

Playback controls -> play, pause, stop, loop

Dynamic properties -> color, size, position can be changed at runtime

Integration -> via JS, React, Vue, iOS, Android, or Flutter

Project Structure

index.html / App.vue / main.dart - animation container

animations/ - JSON files exported from After Effects

components/ - reusable animation wrappers

assets/ - images or fonts referenced in animation

scripts/ - optional code to control playback

Building Workflow

Design animation in After Effects

Export via Bodymovin plugin as JSON

Load JSON into project using Lottie library

Trigger animation via code or class bindings

Optionally manipulate properties dynamically for interactivity

Difficulty Use Cases

Beginner: play static animation in web page

Intermediate: loop and speed control

Advanced: interactive animation based on user input

Expert: dynamically change animation properties at runtime

Architect: integrate Lottie animations across multi-platform app

Comparisons

Lottie vs GIF: higher quality, smaller file size, scalable

Lottie vs CSS Animations: richer AE animation support

Lottie vs Canvas/WebGL: easier integration for designers

Lottie vs AnimXYZ: JSON-based vs CSS utility classes

Lottie vs video: interactive and dynamic control vs static playback

Versioning Timeline

2017 - Lottie launched by Airbnb Design

2018 - lottie-web, lottie-ios, lottie-android SDKs released

2019 - Interactive properties API added

2020 - Lottie-Flutter introduced

2025 - Continuous community contributions and performance improvements

Glossary

Bodymovin - AE plugin to export JSON animations

Renderer - method to render animation (SVG, Canvas, WebGL)

Animation JSON - exported file containing AE animation

Dynamic properties - attributes controlled via code

Loop / Autoplay - playback options for Lottie animations

Installation Setup

Install via npm/yarn: npm install lottie-web (web) or use platform-specific SDKs

Include Lottie player in your project

Load JSON animation file exported from Bodymovin

Initialize animation using Lottie API

Control playback, speed, looping, and interactivity

Environment Setup

Web browser for lottie-web

iOS/Android simulator or device

Flutter dev environment if using lottie-flutter

Include JSON animation files

Optional code for interactivity

Config Files

animations/ - JSON files from AE

components/ - Lottie wrappers

index.html / App.vue / main.dart - containers for animations

assets/ - fonts/images used in animation

scripts/ - optional playback control logic

Cli Commands

npm install lottie-web

flutter pub add lottie

pod install for iOS Lottie SDK

gradle dependency for Android Lottie SDK

Preview animations in LottieFiles or AE plugin

Internationalization

Animations are language-independent

Text layers can be replaced dynamically via AE or runtime

JSON assets can support localized text

Works across all locales without extra setup

Dynamic updates possible for multi-language apps

Accessibility

Animations should respect prefers-reduced-motion

Use semantic UI elements with Lottie overlays

Do not convey critical information solely via animation

Alternative static visuals for screen readers

Avoid rapid flashing content for sensitive users

Ui Styling

Animations integrate into UI container

Independent of app styling except size/position

Responsive-friendly if container scales

Overlays handled via platform UI

Vector graphics remain sharp on all devices

State Management

Playback state: play, pause, stop

Looping and speed adjustments

Dynamic property overrides

User interaction triggers events

No global app state dependency

Data Management

JSON files contain all animation data

Minimal runtime memory footprint

Dynamic properties managed via JS or SDK

Multiple animations can share JSON templates

Cache animations to reduce repeated parsing

Architecture

After Effects -> Bodymovin plugin exports JSON

Lottie library parses JSON

Renderer draws animation (SVG/Canvas/WebGL/Native)

Optional code API manipulates playback and properties

Integrates with UI framework or platform

Rendering Model

JSON animation parsed by Lottie library

Renderer draws frames (SVG, Canvas, WebGL, or native)

Animation playback controlled by API

Dynamic properties updated at runtime

UI framework integrates container and event triggers

Architectural Patterns

Designer exports AE animation as JSON

Developer integrates JSON with platform renderer

Animation triggers controlled via code or UI events

Optional loops, speed, and interactivity management

Reusable animation components in app structure

Real World Architectures

App onboarding and splash screens

Interactive dashboards and UI components

Marketing landing pages with animations

Component libraries with reusable Lottie wrappers

Tutorials and storytelling apps with rich animations

Design Principles

Seamless designer-to-developer workflow

Lightweight, scalable vector animations

Cross-platform consistency

Interactive and dynamic property control

Minimal runtime overhead

Scalability Guide

Reuse JSON animations across multiple components

Batch animation loads to prevent performance spikes

Lazy load animations when offscreen

Optimize AE exports to minimize layers

Monitor rendering performance on mobile devices

Migration Guide

Replace GIF/video animations with JSON

Update playback code to Lottie API

Use dynamic property overrides instead of hard-coded assets

Integrate into existing component architecture

Optimize JSON files for size and performance

Performance Notes

Vector-based animations are lightweight compared to video/GIF

Large or complex animations may require optimization

Reduce unnecessary layers in AE export

Use looping sparingly for mobile performance

Lazy load animations for faster page loads

Security Notes

JSON files are safe, no runtime code execution

Cross-origin loading may require proper CORS headers

No access to sensitive data by default

Safe for embedding in web and mobile apps

Avoid untrusted JSON sources to prevent unexpected behavior

Monitoring Analytics

Check animation load times and frame rate

Track user interaction with animations

Log failed animation loads

Measure memory impact on mobile devices

Benchmark complex animations across devices

Code Quality

Validate JSON exports from AE/Bodymovin

Use wrappers for consistent API usage

Minimize hard-coded values for reusability

Document animation triggers and dynamic properties

Test on all supported platforms

Practical Examples

Animated loader using Lottie JSON

Button click feedback animation

Splash screen animation in Flutter/iOS/Android

Interactive infographic with dynamic Lottie properties

Onboarding screens with sequential animations

Troubleshooting

Check if JSON file path is correct

Verify renderer supports required features (SVG/Canvas/WebGL)

Ensure animation was exported correctly from Bodymovin

Inspect browser console or platform logs for errors

Test animation at different speeds and loop settings

Testing Guide

Preview animations in AE and exported JSON

Test playback across different devices

Validate loop, speed, and interaction behaviors

Inspect performance using DevTools (web) or platform profilers

Check rendering fidelity on mobile and desktop

Deployment Options

Static web hosting with JSON files

CDN delivery of Lottie assets

Embed in native mobile apps

Use in cross-platform frameworks like Flutter

Combine with SPA frameworks for interactive UIs

Tools Ecosystem

Bodymovin plugin for After Effects

lottie-web for web

lottie-ios for iOS apps

lottie-android for Android apps

lottie-flutter for Flutter apps

Integrations

React - lottie-react or lottie-web

Vue - vue-lottie wrapper

Flutter - lottie-flutter package

iOS - Lottie-iOS SDK

Android - Lottie-Android SDK

Productivity Tips

Reuse animation JSON across multiple components

Optimize After Effects layers before export

Use Bodymovin previews to check fidelity

Control interactivity via wrapper functions

Lazy load animations for better performance

Challenges

Complex AE features may not export properly

Dynamic property overrides require coding knowledge

Performance tuning for large animations

Cross-platform consistency

Dependency on After Effects for animation creation

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

Monetization

Premium app onboarding animations

Animated marketing and promotional content

SaaS products with interactive UI animations

In-app animated tutorials and guides

Licensing of animation libraries or templates

Future Roadmap

Support for real-time parametric animations

Better performance for complex animations on mobile

Expanded interactive property APIs

Integration with web frameworks for automatic code binding

Cloud-hosted animation streaming for large apps

When Not To Use

Simple hover or micro animations -> CSS may suffice

Physics-based real-time simulations -> JS/Canvas needed

Highly interactive game graphics -> WebGL preferred

Very complex multi-layer AE animations causing performance issues

Animations requiring dynamic generative content not supported by AE JSON

Final Summary

Lottie bridges designers and developers for high-quality vector animations.

Supports scalable, interactive animations across web and mobile.

JSON-based workflow reduces asset sizes and improves maintainability.

Enables interactive UI/UX animations controlled via code.

Essential tool for modern app onboarding, micro-interactions, and animated storytelling.

Faq

Can I use Lottie without After Effects? -> No, AE + Bodymovin required for export

Is Lottie cross-platform? -> Yes, web and mobile SDKs available

Are JSON files lightweight? -> Usually smaller than GIF/video

Can I control animation dynamically? -> Yes, via JS/SDK API

Does Lottie support interactivity? -> Yes, for property overrides and triggers

Code Sample Descriptions

1

Simple Lottie Animation

# lottie/demo/index.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="animation" style="width:200px;height:200px;"></div>
    <script>
        const animation = lottie.loadAnimation({
        targets: document.getElementById('animation'),
        path: 'data/animation.json',
        renderer: 'svg',
        loop: true,
        autoplay: true
        });
    </script>
    </body>
</html>

A basic Lottie-web example that loads and plays a JSON animation in a web page.

Let’s Try →
2

Lottie Loop Animation

# lottie/demo/loop.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="loopAnim" style="width:200px;height:200px;"></div>
    <script>
        const anim = lottie.loadAnimation({
        container: document.getElementById('loopAnim'),
        path: 'data/loop.json',
        renderer: 'svg',
        loop: true,
        autoplay: true
        });
    </script>
    </body>
</html>

Plays a Lottie animation on loop.

Let’s Try →
3

Lottie Play Once

# lottie/demo/play_once.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="playOnce" style="width:200px;height:200px;"></div>
    <script>
        lottie.loadAnimation({
        container: document.getElementById('playOnce'),
        path: 'data/play_once.json',
        renderer: 'svg',
        loop: false,
        autoplay: true
        });
    </script>
    </body>
</html>

Plays a Lottie animation once without looping.

Let’s Try →
4

Lottie Control Animation

# lottie/demo/control.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="controlAnim" style="width:200px;height:200px;"></div>
    <button onclick="anim.play()">Play</button>
    <button onclick="anim.stop()">Stop</button>
    <script>
        const anim = lottie.loadAnimation({
        container: document.getElementById('controlAnim'),
        path: 'data/control.json',
        renderer: 'svg',
        loop: true,
        autoplay: false
        });
    </script>
    </body>
</html>

Controls playback of a Lottie animation via buttons.

Let’s Try →
5

Lottie with Multiple Animations

# lottie/demo/multiple.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="anim1" style="width:150px;height:150px;"></div>
    <div id="anim2" style="width:150px;height:150px;"></div>
    <script>
        lottie.loadAnimation({ container: document.getElementById('anim1'), path: 'data/anim1.json', renderer: 'svg', loop: true, autoplay: true });
        lottie.loadAnimation({ container: document.getElementById('anim2'), path: 'data/anim2.json', renderer: 'svg', loop: true, autoplay: true });
    </script>
    </body>
</html>

Displays multiple Lottie animations on the same page.

Let’s Try →
6

Lottie Hover Play

# lottie/demo/hover_play.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="hoverAnim" style="width:200px;height:200px;"></div>
    <script>
        const anim = lottie.loadAnimation({ container: document.getElementById('hoverAnim'), path: 'data/hover.json', renderer: 'svg', loop: false, autoplay: false });
        document.getElementById('hoverAnim').addEventListener('mouseenter', () => { anim.goToAndPlay(0,true); });
    </script>
    </body>
</html>

Plays a Lottie animation when hovered.

Let’s Try →
7

Lottie Reverse Animation

# lottie/demo/reverse.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="reverseAnim" style="width:200px;height:200px;"></div>
    <script>
        const anim = lottie.loadAnimation({ container: document.getElementById('reverseAnim'), path: 'data/reverse.json', renderer: 'svg', loop: true, autoplay: true });
        anim.setDirection(-1);
    </script>
    </body>
</html>

Plays a Lottie animation in reverse.

Let’s Try →
8

Lottie Speed Control

# lottie/demo/speed.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="speedAnim" style="width:200px;height:200px;"></div>
    <script>
        const anim = lottie.loadAnimation({ container: document.getElementById('speedAnim'), path: 'data/speed.json', renderer: 'svg', loop: true, autoplay: true });
        anim.setSpeed(2);
    </script>
    </body>
</html>

Changes playback speed of a Lottie animation.

Let’s Try →
9

Lottie Click Trigger

# lottie/demo/click_trigger.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="clickAnim" style="width:200px;height:200px;"></div>
    <script>
        const anim = lottie.loadAnimation({ container: document.getElementById('clickAnim'), path: 'data/click.json', renderer: 'svg', loop: false, autoplay: false });
        document.getElementById('clickAnim').addEventListener('click', () => { anim.goToAndPlay(0,true); });
    </script>
    </body>
</html>

Plays Lottie animation when clicked.

Let’s Try →
10

Lottie Segment Animation

# lottie/demo/segment.html
<html>
    <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.9.6/lottie.min.js"></script>
    </head>
    <body>
    <div id="segmentAnim" style="width:200px;height:200px;"></div>
    <script>
        const anim = lottie.loadAnimation({ container: document.getElementById('segmentAnim'), path: 'data/segment.json', renderer: 'svg', loop: true, autoplay: false });
        anim.playSegments([0,50], true);
    </script>
    </body>
</html>

Plays only a segment of the animation.

Let’s Try →

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.

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