@lottiefiles/dotlottie-web
Advanced tools
🚧 Beta Alert: We're still refining! The APIs in this package may undergo changes.
A JavaScript library for rendering lottie and dotLottie animations in the browser.
dotLottie is an open-source file format that aggregates one or more Lottie files and their associated resources into a single file. They are ZIP archives compressed with the Deflate compression method and carry the file extension of ".lottie".
npm install @lottiefiles/dotlottie-web
After installation, you can import DotLottie in your JavaScript or TypeScript module:
<!-- Canvas element where the animation will be rendered -->
<canvas id="my-canvas" width="300px" height="300px"></canvas>
import { DotLottie } from '@lottiefiles/dotlottie-web';
const dotLottie = new DotLottie({
autoplay: true,
loop: true,
canvas: document.getElementById('my-canvas'),
src: "https://lottie.host/4db68bbd-31f6-4cd8-84eb-189de081159a/IGmMCqhzpt.lottie", // or .json file
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta
name="viewport"
content="width=device-width, initial-scale=1, shrink-to-fit=no"
/>
<title>@lottiefiles/dotlottie-web | basic example</title>
</head>
<body>
<!-- Canvas element where the Lottie animation will be rendered -->
<canvas id="canvas" width="300" height="300"></canvas>
<script type="module">
import { DotLottie } from "https://unpkg.com/@lottiefiles/dotlottie-web@latest/dist/index.js";
new DotLottie({
autoplay: true,
loop: true,
canvas: document.getElementById("canvas"),
src:
"https://lottie.host/5f7f4690-6311-4279-82e4-38c2eab146ab/niPwIBUnGa.json"
});
</script>
</body>
</html>
The DotLottie constructor accepts a config object with the following properties:
| Property name | Type | Required | Default | Description |
|---|---|---|---|---|
autoplay | boolean | false | Auto-starts the animation on load. | |
loop | boolean | false | Determines if the animation should loop. | |
canvas | HTMLCanvasElement | ✔️ | undefined | Canvas element for animation rendering. |
src | string | undefined | URL to the animation data (.json or .lottie). | |
speed | number | 1 | Animation playback speed. 1 is regular speed. | |
data | string | ArrayBuffer | undefined | Animation data provided either as a Lottie JSON string or as an ArrayBuffer for .lottie animations. | |
mode | string | "forward" | Animation play mode. Accepts "forward", "reverse", "bounce", "bounce-reverse". | |
backgroundColor | string | undefined | Background color of the canvas. Accepts 6-digit or 8-digit hex color string (e.g., "#000000", "#000000FF"), | |
segments | [number, number] | [0, totalFrames - 1] | Animation segments. Accepts an array of two numbers, where the first number is the start frame and the second number is the end frame. | |
renderConfig | RenderConfig | {} | Configuration for rendering the animation. |
The renderConfig object accepts the following properties:
| Property name | Type | Required | Default | Description |
|---|---|---|---|---|
devicePixelRatio | number | window.devicePixelRatio | 1 | The device pixel ratio. |
DotLottie instances expose the following properties:
| Property | Type | Description |
|---|---|---|
currentFrame | number | Represents the animation's currently displayed frame number. |
duration | number | Specifies the animation's total playback time in milliseconds. |
totalFrames | number | Denotes the total count of individual frames within the animation. |
loop | boolean | Indicates if the animation is set to play in a continuous loop. |
speed | number | Represents the playback speed factor; e.g., 2 would mean double speed. |
loopCount | number | Tracks how many times the animation has completed its loop. |
direction | string | Reflects the current playback direction; e.g., 1 would mean forward, -1 would mean reverse. |
mode | string | Reflects the current playback mode. |
isPaused | boolean | Reflects whether the animation is paused or not. |
isStopped | boolean | Reflects whether the animation is stopped or not. |
isPlaying | boolean | Reflects whether the animation is playing or not. |
segments | number | Reflects the frames range of the animations. where segments[0] is the start frame and segments[1] is the end frame. |
backgroundColor | string | Gets the background color of the canvas. |
autoplay | boolean | Indicates if the animation is set to auto-play. |
isFrozen | boolean | Reflects whether the animation loop is stopped or not. |
DotLottie instances expose the following methods that can be used to control the animation:
| Method | Description |
|---|---|
play() | Begins playback from the current animation position. |
pause() | Pauses the animation without resetting its position. |
stop() | Halts playback and returns the animation to its initial frame. |
setSpeed(speed: number) | Sets the playback speed with the given multiplier. |
setLoop(loop: boolean) | Configures whether the animation should loop continuously. |
setFrame(frame: number) | Directly navigates the animation to a specified frame. |
addEventListener(event: string, listener: Function) | Registers a function to respond to a specific animation event. |
removeEventListener(event: string, listener?: Function) | Removes a previously registered function from responding to a specific animation event. |
destroy() | Destroys the renderer instance and unregisters all event listeners. This method should be called when the canvas is removed from the DOM to prevent memory leaks. |
load(config: Config) | Loads a new configuration or a new animation. |
setMode(mode: string) | Sets the animation play mode. |
setSegments(startFrame: number, endFrame: number) | Sets the start and end frame of the animation. |
freeze() | Freezes the animation by stopping the animation loop. |
unfreeze() | Unfreezes the animation by resuming the animation loop. |
setBackgroundColor(color: string) | Sets the background color of the canvas. |
resize() | This method adjusts the canvas size to match its bounding box dimensions, considering the device's pixel ratio. This prevents the canvas from appearing blurry on high-resolution screens. Call this method when the window or the canvas element is resized. |
The DotLottie class exposes the following static methods:
| Method | Description |
|---|---|
setWasmUrl(url: string) | Sets the URL to the renderer.wasm binary. |
The DotLottie instance emits the following events that can be listened to via the addEventListener method:
| Event | Description | Event Parameter (Type and Fields) |
|---|---|---|
load | Emitted when the animation is loaded. | LoadEvent { type: 'load' } |
loadError | Emitted when there's an error loading the animation. | LoadErrorEvent { type: 'loadError', error: Error } |
play | Emitted when the animation starts playing. | PlayEvent { type: 'play' } |
pause | Emitted when the animation is paused. | PauseEvent { type: 'pause' } |
stop | Emitted when the animation is stopped. | StopEvent { type: 'stop' } |
loop | Emitted when the animation completes a loop. | LoopEvent { type: 'loop', loopCount: number } |
complete | Emitted when the animation completes. | CompleteEvent { type: 'complete' } |
frame | Emitted when the animation reaches a new frame. | FrameEvent { type: 'frame', currentFrame: number } |
destroy | Emitted when the animation is destroyed. | DestroyEvent { type: 'destroy' } |
freeze | Emitted when the animation is freezed and the animation loop stops. | FreezeEvent { type: 'freeze' } |
unfreeze | Emitted when the animation is unfreezed and the animation loop resumes. | UnfreezeEvent { type: 'unfreeze' } |
pnpm install
pnpm dev
pnpm build
Note: This step is necessary only if you wish to update the src/renderer.cpp file or the thorvg version being used. If not, you can skip this step.
Using Docker (Recommended):
pnpm build:wasm:docker
Using Emscripten SDK:
Ensure Emscripten SDK is installed.
pnpm build:wasm /path/to/emsdk/
FAQs
Lottie and DotLottie player for the web
The npm package @lottiefiles/dotlottie-web receives a total of 101,829 weekly downloads. As such, @lottiefiles/dotlottie-web popularity was classified as popular.
We found that @lottiefiles/dotlottie-web demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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