React Fireworks Background

React fireworks background with click-triggered explosions. Canvas particle physics creates Fourth of July effects with TypeScript and shadcn/ui.

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Who doesn't love fireworks? This React component brings that explosive celebration to your web app. Click anywhere and watch particles arc through the air, explode into brilliant bursts, then fade away with realistic physics. It's like having a fireworks show in your browser, minus the noise complaints.

Interactive celebration effects

Click anywhere to launch fireworks with realistic physics and gravity:

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'use client'; import * as React from 'react'; import { cn } from '@/lib/utils'; const rand = (min: number, max: number): number =>  Math.random() * (max - min) + min; const randInt = (min: number, max: number): number =>  Math.floor(Math.random() * (max - min) + min); const randColor = (): string => `hsl(${randInt(0, 360)}, 100%, 50%)`; type ParticleType = {  x: number;  y: number;  color: string;  speed: number;  direction: number;  vx: number;  vy: number;  gravity: number;  friction: number;  alpha: number;  decay: number;  size: number;  update: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;  isAlive: () => boolean;}; function createParticle(  x: number,  y: number,  color: string,  speed: number,  direction: number,  gravity: number,  friction: number,  size: number,): ParticleType {  const vx = Math.cos(direction) * speed;  const vy = Math.sin(direction) * speed;  const alpha = 1;  const decay = rand(0.005, 0.02);   return {    x,    y,    color,    speed,    direction,    vx,    vy,    gravity,    friction,    alpha,    decay,    size,    update() {      this.vx *= this.friction;      this.vy *= this.friction;      this.vy += this.gravity;      this.x += this.vx;      this.y += this.vy;      this.alpha -= this.decay;    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.globalAlpha = this.alpha;      ctx.beginPath();      ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);      ctx.fillStyle = this.color;      ctx.fill();      ctx.restore();    },    isAlive() {      return this.alpha > 0;    },  };} type FireworkType = {  x: number;  y: number;  targetY: number;  color: string;  speed: number;  size: number;  angle: number;  vx: number;  vy: number;  trail: { x: number; y: number }[];  trailLength: number;  exploded: boolean;  update: () => boolean;  explode: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;}; function createFirework(  x: number,  y: number,  targetY: number,  color: string,  speed: number,  size: number,  particleSpeed: { min: number; max: number } | number,  particleSize: { min: number; max: number } | number,  onExplode: (particles: ParticleType[]) => void,): FireworkType {  const angle = -Math.PI / 2 + rand(-0.3, 0.3);  const vx = Math.cos(angle) * speed;  const vy = Math.sin(angle) * speed;  const trail: { x: number; y: number }[] = [];  const trailLength = randInt(10, 25);   return {    x,    y,    targetY,    color,    speed,    size,    angle,    vx,    vy,    trail,    trailLength,    exploded: false,    update() {      this.trail.push({ x: this.x, y: this.y });      if (this.trail.length > this.trailLength) {        this.trail.shift();      }      this.x += this.vx;      this.y += this.vy;      this.vy += 0.02;      if (this.vy >= 0 || this.y <= this.targetY) {        this.explode();        return false;      }      return true;    },    explode() {      const numParticles = randInt(50, 150);      const particles: ParticleType[] = [];      for (let i = 0; i < numParticles; i++) {        const particleAngle = rand(0, Math.PI * 2);        const localParticleSpeed = getValueByRange(particleSpeed);        const localParticleSize = getValueByRange(particleSize);        particles.push(          createParticle(            this.x,            this.y,            this.color,            localParticleSpeed,            particleAngle,            0.05,            0.98,            localParticleSize,          ),        );      }      onExplode(particles);    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.beginPath();      if (this.trail.length > 1) {        ctx.moveTo(this.trail[0]?.x ?? this.x, this.trail[0]?.y ?? this.y);        for (const point of this.trail) {          ctx.lineTo(point.x, point.y);        }      } else {        ctx.moveTo(this.x, this.y);        ctx.lineTo(this.x, this.y);      }      ctx.strokeStyle = this.color;      ctx.lineWidth = this.size;      ctx.lineCap = 'round';      ctx.stroke();      ctx.restore();    },  };} function getValueByRange(range: { min: number; max: number } | number): number {  if (typeof range === 'number') {    return range;  }  return rand(range.min, range.max);} function getColor(color: string | string[] | undefined): string {  if (Array.isArray(color)) {    return color[randInt(0, color.length)] ?? randColor();  }  return color ?? randColor();} type FireworksBackgroundProps = Omit<React.ComponentProps<'div'>, 'color'> & {  canvasProps?: React.ComponentProps<'canvas'>;  population?: number;  color?: string | string[];  fireworkSpeed?: { min: number; max: number } | number;  fireworkSize?: { min: number; max: number } | number;  particleSpeed?: { min: number; max: number } | number;  particleSize?: { min: number; max: number } | number;}; function FireworksBackground({  ref,  className,  canvasProps,  population = 1,  color,  fireworkSpeed = { min: 4, max: 8 },  fireworkSize = { min: 2, max: 5 },  particleSpeed = { min: 2, max: 7 },  particleSize = { min: 1, max: 5 },  ...props}: FireworksBackgroundProps) {  const canvasRef = React.useRef<HTMLCanvasElement>(null);  const containerRef = React.useRef<HTMLDivElement>(null);  React.useImperativeHandle(ref, () => containerRef.current as HTMLDivElement);   React.useEffect(() => {    const canvas = canvasRef.current;    const container = containerRef.current;    if (!canvas || !container) return;    const ctx = canvas.getContext('2d');    if (!ctx) return;     let maxX = window.innerWidth;    let ratio = container.offsetHeight / container.offsetWidth;    let maxY = maxX * ratio;    canvas.width = maxX;    canvas.height = maxY;     const setCanvasSize = () => {      maxX = window.innerWidth;      ratio = container.offsetHeight / container.offsetWidth;      maxY = maxX * ratio;      canvas.width = maxX;      canvas.height = maxY;    };    window.addEventListener('resize', setCanvasSize);     const explosions: ParticleType[] = [];    const fireworks: FireworkType[] = [];     const handleExplosion = (particles: ParticleType[]) => {      explosions.push(...particles);    };     const launchFirework = () => {      const x = rand(maxX * 0.1, maxX * 0.9);      const y = maxY;      const targetY = rand(maxY * 0.1, maxY * 0.4);      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );      const timeout = rand(300, 800) / population;      setTimeout(launchFirework, timeout);    };     launchFirework();     let animationFrameId: number;    const animate = () => {      ctx.clearRect(0, 0, maxX, maxY);       for (let i = fireworks.length - 1; i >= 0; i--) {        const firework = fireworks[i];        if (!firework?.update()) {          fireworks.splice(i, 1);        } else {          firework.draw(ctx);        }      }       for (let i = explosions.length - 1; i >= 0; i--) {        const particle = explosions[i];        particle?.update();        if (particle?.isAlive()) {          particle.draw(ctx);        } else {          explosions.splice(i, 1);        }      }       animationFrameId = requestAnimationFrame(animate);    };     animate();     const handleClick = (event: MouseEvent) => {      const x = event.clientX;      const y = maxY;      const targetY = event.clientY;      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );    };     container.addEventListener('click', handleClick);     return () => {      window.removeEventListener('resize', setCanvasSize);      container.removeEventListener('click', handleClick);      cancelAnimationFrame(animationFrameId);    };  }, [    population,    color,    fireworkSpeed,    fireworkSize,    particleSpeed,    particleSize,  ]);   return (    <div      ref={containerRef}      data-slot="fireworks-background"      className={cn('relative size-full overflow-hidden', className)}      {...props}    >      <canvas        {...canvasProps}        ref={canvasRef}        className={cn('absolute inset-0 size-full', canvasProps?.className)}      />    </div>  );} export { FireworksBackground, type FireworksBackgroundProps };

Built for React applications with TypeScript and Next.js. The animation runs on HTML5 Canvas with requestAnimationFrame, so you get smooth 60fps explosions. Customize colors, speeds, sizes, and population—from subtle sparkles to full-blown New Year's Eve mayhem.

Installation

npx shadcn@latest add https://www.shadcn.io/registry/fireworks-background.json

npx shadcn@latest add https://www.shadcn.io/registry/fireworks-background.json

pnpm dlx shadcn@latest add https://www.shadcn.io/registry/fireworks-background.json

bunx shadcn@latest add https://www.shadcn.io/registry/fireworks-background.json

Usage

import { FireworksBackground } from "@/components/ui/fireworks-background";

export default function Celebration() {
  return (
    <div className="relative h-screen">
      <FireworksBackground
        population={3}
        color={["#ff0000", "#00ff00", "#0000ff", "#ffff00"]}
        fireworkSpeed={{min: 4, max: 8}}
        particleSize={{min: 2, max: 6}}
      />
      <div className="relative z-10 text-white p-8">
        <h1>Click anywhere to celebrate!</h1>
      </div>
    </div>
  );
}

Why most firework animations look fake

Most developers use pre-made GIFs or simple CSS animations. Static, repetitive, no physics. Some try particle libraries but end up with floating dots that ignore gravity. Real fireworks have weight—they arc up, explode at peak height, then fall down with particle trails.

This React component simulates actual physics. Fireworks launch with initial velocity, slow down due to gravity, explode at peak trajectory, then particles scatter with momentum and fade with realistic decay. Click anywhere and the firework aims for that spot. Canvas rendering keeps it smooth even with hundreds of particles exploding simultaneously.

Examples

High Population

More frequent launches for constant celebration:

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'use client'; import * as React from 'react'; import { cn } from '@/lib/utils'; const rand = (min: number, max: number): number =>  Math.random() * (max - min) + min; const randInt = (min: number, max: number): number =>  Math.floor(Math.random() * (max - min) + min); const randColor = (): string => `hsl(${randInt(0, 360)}, 100%, 50%)`; type ParticleType = {  x: number;  y: number;  color: string;  speed: number;  direction: number;  vx: number;  vy: number;  gravity: number;  friction: number;  alpha: number;  decay: number;  size: number;  update: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;  isAlive: () => boolean;}; function createParticle(  x: number,  y: number,  color: string,  speed: number,  direction: number,  gravity: number,  friction: number,  size: number,): ParticleType {  const vx = Math.cos(direction) * speed;  const vy = Math.sin(direction) * speed;  const alpha = 1;  const decay = rand(0.005, 0.02);   return {    x,    y,    color,    speed,    direction,    vx,    vy,    gravity,    friction,    alpha,    decay,    size,    update() {      this.vx *= this.friction;      this.vy *= this.friction;      this.vy += this.gravity;      this.x += this.vx;      this.y += this.vy;      this.alpha -= this.decay;    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.globalAlpha = this.alpha;      ctx.beginPath();      ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);      ctx.fillStyle = this.color;      ctx.fill();      ctx.restore();    },    isAlive() {      return this.alpha > 0;    },  };} type FireworkType = {  x: number;  y: number;  targetY: number;  color: string;  speed: number;  size: number;  angle: number;  vx: number;  vy: number;  trail: { x: number; y: number }[];  trailLength: number;  exploded: boolean;  update: () => boolean;  explode: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;}; function createFirework(  x: number,  y: number,  targetY: number,  color: string,  speed: number,  size: number,  particleSpeed: { min: number; max: number } | number,  particleSize: { min: number; max: number } | number,  onExplode: (particles: ParticleType[]) => void,): FireworkType {  const angle = -Math.PI / 2 + rand(-0.3, 0.3);  const vx = Math.cos(angle) * speed;  const vy = Math.sin(angle) * speed;  const trail: { x: number; y: number }[] = [];  const trailLength = randInt(10, 25);   return {    x,    y,    targetY,    color,    speed,    size,    angle,    vx,    vy,    trail,    trailLength,    exploded: false,    update() {      this.trail.push({ x: this.x, y: this.y });      if (this.trail.length > this.trailLength) {        this.trail.shift();      }      this.x += this.vx;      this.y += this.vy;      this.vy += 0.02;      if (this.vy >= 0 || this.y <= this.targetY) {        this.explode();        return false;      }      return true;    },    explode() {      const numParticles = randInt(50, 150);      const particles: ParticleType[] = [];      for (let i = 0; i < numParticles; i++) {        const particleAngle = rand(0, Math.PI * 2);        const localParticleSpeed = getValueByRange(particleSpeed);        const localParticleSize = getValueByRange(particleSize);        particles.push(          createParticle(            this.x,            this.y,            this.color,            localParticleSpeed,            particleAngle,            0.05,            0.98,            localParticleSize,          ),        );      }      onExplode(particles);    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.beginPath();      if (this.trail.length > 1) {        ctx.moveTo(this.trail[0]?.x ?? this.x, this.trail[0]?.y ?? this.y);        for (const point of this.trail) {          ctx.lineTo(point.x, point.y);        }      } else {        ctx.moveTo(this.x, this.y);        ctx.lineTo(this.x, this.y);      }      ctx.strokeStyle = this.color;      ctx.lineWidth = this.size;      ctx.lineCap = 'round';      ctx.stroke();      ctx.restore();    },  };} function getValueByRange(range: { min: number; max: number } | number): number {  if (typeof range === 'number') {    return range;  }  return rand(range.min, range.max);} function getColor(color: string | string[] | undefined): string {  if (Array.isArray(color)) {    return color[randInt(0, color.length)] ?? randColor();  }  return color ?? randColor();} type FireworksBackgroundProps = Omit<React.ComponentProps<'div'>, 'color'> & {  canvasProps?: React.ComponentProps<'canvas'>;  population?: number;  color?: string | string[];  fireworkSpeed?: { min: number; max: number } | number;  fireworkSize?: { min: number; max: number } | number;  particleSpeed?: { min: number; max: number } | number;  particleSize?: { min: number; max: number } | number;}; function FireworksBackground({  ref,  className,  canvasProps,  population = 1,  color,  fireworkSpeed = { min: 4, max: 8 },  fireworkSize = { min: 2, max: 5 },  particleSpeed = { min: 2, max: 7 },  particleSize = { min: 1, max: 5 },  ...props}: FireworksBackgroundProps) {  const canvasRef = React.useRef<HTMLCanvasElement>(null);  const containerRef = React.useRef<HTMLDivElement>(null);  React.useImperativeHandle(ref, () => containerRef.current as HTMLDivElement);   React.useEffect(() => {    const canvas = canvasRef.current;    const container = containerRef.current;    if (!canvas || !container) return;    const ctx = canvas.getContext('2d');    if (!ctx) return;     let maxX = window.innerWidth;    let ratio = container.offsetHeight / container.offsetWidth;    let maxY = maxX * ratio;    canvas.width = maxX;    canvas.height = maxY;     const setCanvasSize = () => {      maxX = window.innerWidth;      ratio = container.offsetHeight / container.offsetWidth;      maxY = maxX * ratio;      canvas.width = maxX;      canvas.height = maxY;    };    window.addEventListener('resize', setCanvasSize);     const explosions: ParticleType[] = [];    const fireworks: FireworkType[] = [];     const handleExplosion = (particles: ParticleType[]) => {      explosions.push(...particles);    };     const launchFirework = () => {      const x = rand(maxX * 0.1, maxX * 0.9);      const y = maxY;      const targetY = rand(maxY * 0.1, maxY * 0.4);      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );      const timeout = rand(300, 800) / population;      setTimeout(launchFirework, timeout);    };     launchFirework();     let animationFrameId: number;    const animate = () => {      ctx.clearRect(0, 0, maxX, maxY);       for (let i = fireworks.length - 1; i >= 0; i--) {        const firework = fireworks[i];        if (!firework?.update()) {          fireworks.splice(i, 1);        } else {          firework.draw(ctx);        }      }       for (let i = explosions.length - 1; i >= 0; i--) {        const particle = explosions[i];        particle?.update();        if (particle?.isAlive()) {          particle.draw(ctx);        } else {          explosions.splice(i, 1);        }      }       animationFrameId = requestAnimationFrame(animate);    };     animate();     const handleClick = (event: MouseEvent) => {      const x = event.clientX;      const y = maxY;      const targetY = event.clientY;      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );    };     container.addEventListener('click', handleClick);     return () => {      window.removeEventListener('resize', setCanvasSize);      container.removeEventListener('click', handleClick);      cancelAnimationFrame(animationFrameId);    };  }, [    population,    color,    fireworkSpeed,    fireworkSize,    particleSpeed,    particleSize,  ]);   return (    <div      ref={containerRef}      data-slot="fireworks-background"      className={cn('relative size-full overflow-hidden', className)}      {...props}    >      <canvas        {...canvasProps}        ref={canvasRef}        className={cn('absolute inset-0 size-full', canvasProps?.className)}      />    </div>  );} export { FireworksBackground, type FireworksBackgroundProps };

Variable Sizes and Speeds

Dynamic range parameters for organic, unpredictable effects:

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'use client'; import * as React from 'react'; import { cn } from '@/lib/utils'; const rand = (min: number, max: number): number =>  Math.random() * (max - min) + min; const randInt = (min: number, max: number): number =>  Math.floor(Math.random() * (max - min) + min); const randColor = (): string => `hsl(${randInt(0, 360)}, 100%, 50%)`; type ParticleType = {  x: number;  y: number;  color: string;  speed: number;  direction: number;  vx: number;  vy: number;  gravity: number;  friction: number;  alpha: number;  decay: number;  size: number;  update: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;  isAlive: () => boolean;}; function createParticle(  x: number,  y: number,  color: string,  speed: number,  direction: number,  gravity: number,  friction: number,  size: number,): ParticleType {  const vx = Math.cos(direction) * speed;  const vy = Math.sin(direction) * speed;  const alpha = 1;  const decay = rand(0.005, 0.02);   return {    x,    y,    color,    speed,    direction,    vx,    vy,    gravity,    friction,    alpha,    decay,    size,    update() {      this.vx *= this.friction;      this.vy *= this.friction;      this.vy += this.gravity;      this.x += this.vx;      this.y += this.vy;      this.alpha -= this.decay;    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.globalAlpha = this.alpha;      ctx.beginPath();      ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);      ctx.fillStyle = this.color;      ctx.fill();      ctx.restore();    },    isAlive() {      return this.alpha > 0;    },  };} type FireworkType = {  x: number;  y: number;  targetY: number;  color: string;  speed: number;  size: number;  angle: number;  vx: number;  vy: number;  trail: { x: number; y: number }[];  trailLength: number;  exploded: boolean;  update: () => boolean;  explode: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;}; function createFirework(  x: number,  y: number,  targetY: number,  color: string,  speed: number,  size: number,  particleSpeed: { min: number; max: number } | number,  particleSize: { min: number; max: number } | number,  onExplode: (particles: ParticleType[]) => void,): FireworkType {  const angle = -Math.PI / 2 + rand(-0.3, 0.3);  const vx = Math.cos(angle) * speed;  const vy = Math.sin(angle) * speed;  const trail: { x: number; y: number }[] = [];  const trailLength = randInt(10, 25);   return {    x,    y,    targetY,    color,    speed,    size,    angle,    vx,    vy,    trail,    trailLength,    exploded: false,    update() {      this.trail.push({ x: this.x, y: this.y });      if (this.trail.length > this.trailLength) {        this.trail.shift();      }      this.x += this.vx;      this.y += this.vy;      this.vy += 0.02;      if (this.vy >= 0 || this.y <= this.targetY) {        this.explode();        return false;      }      return true;    },    explode() {      const numParticles = randInt(50, 150);      const particles: ParticleType[] = [];      for (let i = 0; i < numParticles; i++) {        const particleAngle = rand(0, Math.PI * 2);        const localParticleSpeed = getValueByRange(particleSpeed);        const localParticleSize = getValueByRange(particleSize);        particles.push(          createParticle(            this.x,            this.y,            this.color,            localParticleSpeed,            particleAngle,            0.05,            0.98,            localParticleSize,          ),        );      }      onExplode(particles);    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.beginPath();      if (this.trail.length > 1) {        ctx.moveTo(this.trail[0]?.x ?? this.x, this.trail[0]?.y ?? this.y);        for (const point of this.trail) {          ctx.lineTo(point.x, point.y);        }      } else {        ctx.moveTo(this.x, this.y);        ctx.lineTo(this.x, this.y);      }      ctx.strokeStyle = this.color;      ctx.lineWidth = this.size;      ctx.lineCap = 'round';      ctx.stroke();      ctx.restore();    },  };} function getValueByRange(range: { min: number; max: number } | number): number {  if (typeof range === 'number') {    return range;  }  return rand(range.min, range.max);} function getColor(color: string | string[] | undefined): string {  if (Array.isArray(color)) {    return color[randInt(0, color.length)] ?? randColor();  }  return color ?? randColor();} type FireworksBackgroundProps = Omit<React.ComponentProps<'div'>, 'color'> & {  canvasProps?: React.ComponentProps<'canvas'>;  population?: number;  color?: string | string[];  fireworkSpeed?: { min: number; max: number } | number;  fireworkSize?: { min: number; max: number } | number;  particleSpeed?: { min: number; max: number } | number;  particleSize?: { min: number; max: number } | number;}; function FireworksBackground({  ref,  className,  canvasProps,  population = 1,  color,  fireworkSpeed = { min: 4, max: 8 },  fireworkSize = { min: 2, max: 5 },  particleSpeed = { min: 2, max: 7 },  particleSize = { min: 1, max: 5 },  ...props}: FireworksBackgroundProps) {  const canvasRef = React.useRef<HTMLCanvasElement>(null);  const containerRef = React.useRef<HTMLDivElement>(null);  React.useImperativeHandle(ref, () => containerRef.current as HTMLDivElement);   React.useEffect(() => {    const canvas = canvasRef.current;    const container = containerRef.current;    if (!canvas || !container) return;    const ctx = canvas.getContext('2d');    if (!ctx) return;     let maxX = window.innerWidth;    let ratio = container.offsetHeight / container.offsetWidth;    let maxY = maxX * ratio;    canvas.width = maxX;    canvas.height = maxY;     const setCanvasSize = () => {      maxX = window.innerWidth;      ratio = container.offsetHeight / container.offsetWidth;      maxY = maxX * ratio;      canvas.width = maxX;      canvas.height = maxY;    };    window.addEventListener('resize', setCanvasSize);     const explosions: ParticleType[] = [];    const fireworks: FireworkType[] = [];     const handleExplosion = (particles: ParticleType[]) => {      explosions.push(...particles);    };     const launchFirework = () => {      const x = rand(maxX * 0.1, maxX * 0.9);      const y = maxY;      const targetY = rand(maxY * 0.1, maxY * 0.4);      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );      const timeout = rand(300, 800) / population;      setTimeout(launchFirework, timeout);    };     launchFirework();     let animationFrameId: number;    const animate = () => {      ctx.clearRect(0, 0, maxX, maxY);       for (let i = fireworks.length - 1; i >= 0; i--) {        const firework = fireworks[i];        if (!firework?.update()) {          fireworks.splice(i, 1);        } else {          firework.draw(ctx);        }      }       for (let i = explosions.length - 1; i >= 0; i--) {        const particle = explosions[i];        particle?.update();        if (particle?.isAlive()) {          particle.draw(ctx);        } else {          explosions.splice(i, 1);        }      }       animationFrameId = requestAnimationFrame(animate);    };     animate();     const handleClick = (event: MouseEvent) => {      const x = event.clientX;      const y = maxY;      const targetY = event.clientY;      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );    };     container.addEventListener('click', handleClick);     return () => {      window.removeEventListener('resize', setCanvasSize);      container.removeEventListener('click', handleClick);      cancelAnimationFrame(animationFrameId);    };  }, [    population,    color,    fireworkSpeed,    fireworkSize,    particleSpeed,    particleSize,  ]);   return (    <div      ref={containerRef}      data-slot="fireworks-background"      className={cn('relative size-full overflow-hidden', className)}      {...props}    >      <canvas        {...canvasProps}        ref={canvasRef}        className={cn('absolute inset-0 size-full', canvasProps?.className)}      />    </div>  );} export { FireworksBackground, type FireworksBackgroundProps };

Fixed Parameters

Consistent sizing for uniform, controlled patterns:

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'use client'; import * as React from 'react'; import { cn } from '@/lib/utils'; const rand = (min: number, max: number): number =>  Math.random() * (max - min) + min; const randInt = (min: number, max: number): number =>  Math.floor(Math.random() * (max - min) + min); const randColor = (): string => `hsl(${randInt(0, 360)}, 100%, 50%)`; type ParticleType = {  x: number;  y: number;  color: string;  speed: number;  direction: number;  vx: number;  vy: number;  gravity: number;  friction: number;  alpha: number;  decay: number;  size: number;  update: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;  isAlive: () => boolean;}; function createParticle(  x: number,  y: number,  color: string,  speed: number,  direction: number,  gravity: number,  friction: number,  size: number,): ParticleType {  const vx = Math.cos(direction) * speed;  const vy = Math.sin(direction) * speed;  const alpha = 1;  const decay = rand(0.005, 0.02);   return {    x,    y,    color,    speed,    direction,    vx,    vy,    gravity,    friction,    alpha,    decay,    size,    update() {      this.vx *= this.friction;      this.vy *= this.friction;      this.vy += this.gravity;      this.x += this.vx;      this.y += this.vy;      this.alpha -= this.decay;    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.globalAlpha = this.alpha;      ctx.beginPath();      ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);      ctx.fillStyle = this.color;      ctx.fill();      ctx.restore();    },    isAlive() {      return this.alpha > 0;    },  };} type FireworkType = {  x: number;  y: number;  targetY: number;  color: string;  speed: number;  size: number;  angle: number;  vx: number;  vy: number;  trail: { x: number; y: number }[];  trailLength: number;  exploded: boolean;  update: () => boolean;  explode: () => void;  draw: (ctx: CanvasRenderingContext2D) => void;}; function createFirework(  x: number,  y: number,  targetY: number,  color: string,  speed: number,  size: number,  particleSpeed: { min: number; max: number } | number,  particleSize: { min: number; max: number } | number,  onExplode: (particles: ParticleType[]) => void,): FireworkType {  const angle = -Math.PI / 2 + rand(-0.3, 0.3);  const vx = Math.cos(angle) * speed;  const vy = Math.sin(angle) * speed;  const trail: { x: number; y: number }[] = [];  const trailLength = randInt(10, 25);   return {    x,    y,    targetY,    color,    speed,    size,    angle,    vx,    vy,    trail,    trailLength,    exploded: false,    update() {      this.trail.push({ x: this.x, y: this.y });      if (this.trail.length > this.trailLength) {        this.trail.shift();      }      this.x += this.vx;      this.y += this.vy;      this.vy += 0.02;      if (this.vy >= 0 || this.y <= this.targetY) {        this.explode();        return false;      }      return true;    },    explode() {      const numParticles = randInt(50, 150);      const particles: ParticleType[] = [];      for (let i = 0; i < numParticles; i++) {        const particleAngle = rand(0, Math.PI * 2);        const localParticleSpeed = getValueByRange(particleSpeed);        const localParticleSize = getValueByRange(particleSize);        particles.push(          createParticle(            this.x,            this.y,            this.color,            localParticleSpeed,            particleAngle,            0.05,            0.98,            localParticleSize,          ),        );      }      onExplode(particles);    },    draw(ctx: CanvasRenderingContext2D) {      ctx.save();      ctx.beginPath();      if (this.trail.length > 1) {        ctx.moveTo(this.trail[0]?.x ?? this.x, this.trail[0]?.y ?? this.y);        for (const point of this.trail) {          ctx.lineTo(point.x, point.y);        }      } else {        ctx.moveTo(this.x, this.y);        ctx.lineTo(this.x, this.y);      }      ctx.strokeStyle = this.color;      ctx.lineWidth = this.size;      ctx.lineCap = 'round';      ctx.stroke();      ctx.restore();    },  };} function getValueByRange(range: { min: number; max: number } | number): number {  if (typeof range === 'number') {    return range;  }  return rand(range.min, range.max);} function getColor(color: string | string[] | undefined): string {  if (Array.isArray(color)) {    return color[randInt(0, color.length)] ?? randColor();  }  return color ?? randColor();} type FireworksBackgroundProps = Omit<React.ComponentProps<'div'>, 'color'> & {  canvasProps?: React.ComponentProps<'canvas'>;  population?: number;  color?: string | string[];  fireworkSpeed?: { min: number; max: number } | number;  fireworkSize?: { min: number; max: number } | number;  particleSpeed?: { min: number; max: number } | number;  particleSize?: { min: number; max: number } | number;}; function FireworksBackground({  ref,  className,  canvasProps,  population = 1,  color,  fireworkSpeed = { min: 4, max: 8 },  fireworkSize = { min: 2, max: 5 },  particleSpeed = { min: 2, max: 7 },  particleSize = { min: 1, max: 5 },  ...props}: FireworksBackgroundProps) {  const canvasRef = React.useRef<HTMLCanvasElement>(null);  const containerRef = React.useRef<HTMLDivElement>(null);  React.useImperativeHandle(ref, () => containerRef.current as HTMLDivElement);   React.useEffect(() => {    const canvas = canvasRef.current;    const container = containerRef.current;    if (!canvas || !container) return;    const ctx = canvas.getContext('2d');    if (!ctx) return;     let maxX = window.innerWidth;    let ratio = container.offsetHeight / container.offsetWidth;    let maxY = maxX * ratio;    canvas.width = maxX;    canvas.height = maxY;     const setCanvasSize = () => {      maxX = window.innerWidth;      ratio = container.offsetHeight / container.offsetWidth;      maxY = maxX * ratio;      canvas.width = maxX;      canvas.height = maxY;    };    window.addEventListener('resize', setCanvasSize);     const explosions: ParticleType[] = [];    const fireworks: FireworkType[] = [];     const handleExplosion = (particles: ParticleType[]) => {      explosions.push(...particles);    };     const launchFirework = () => {      const x = rand(maxX * 0.1, maxX * 0.9);      const y = maxY;      const targetY = rand(maxY * 0.1, maxY * 0.4);      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );      const timeout = rand(300, 800) / population;      setTimeout(launchFirework, timeout);    };     launchFirework();     let animationFrameId: number;    const animate = () => {      ctx.clearRect(0, 0, maxX, maxY);       for (let i = fireworks.length - 1; i >= 0; i--) {        const firework = fireworks[i];        if (!firework?.update()) {          fireworks.splice(i, 1);        } else {          firework.draw(ctx);        }      }       for (let i = explosions.length - 1; i >= 0; i--) {        const particle = explosions[i];        particle?.update();        if (particle?.isAlive()) {          particle.draw(ctx);        } else {          explosions.splice(i, 1);        }      }       animationFrameId = requestAnimationFrame(animate);    };     animate();     const handleClick = (event: MouseEvent) => {      const x = event.clientX;      const y = maxY;      const targetY = event.clientY;      const fireworkColor = getColor(color);      const speed = getValueByRange(fireworkSpeed);      const size = getValueByRange(fireworkSize);      fireworks.push(        createFirework(          x,          y,          targetY,          fireworkColor,          speed,          size,          particleSpeed,          particleSize,          handleExplosion,        ),      );    };     container.addEventListener('click', handleClick);     return () => {      window.removeEventListener('resize', setCanvasSize);      container.removeEventListener('click', handleClick);      cancelAnimationFrame(animationFrameId);    };  }, [    population,    color,    fireworkSpeed,    fireworkSize,    particleSpeed,    particleSize,  ]);   return (    <div      ref={containerRef}      data-slot="fireworks-background"      className={cn('relative size-full overflow-hidden', className)}      {...props}    >      <canvas        {...canvasProps}        ref={canvasRef}        className={cn('absolute inset-0 size-full', canvasProps?.className)}      />    </div>  );} export { FireworksBackground, type FireworksBackgroundProps };

Features

Click-to-launch interactivity aiming fireworks toward cursor position
Realistic physics simulation with gravity, momentum, and particle decay
Configurable parameters for population, colors, speeds, and sizes
Range or fixed values supporting both random and consistent effects
Canvas-based rendering with smooth 60fps animations
TypeScript definitions for all configuration options
Automatic cleanup preventing memory leaks on unmount
shadcn/ui compatible with responsive container sizing

API Reference

FireworksBackground

Main component for the fireworks animation canvas.

Prop	Type	Default	Description
`population`	`number`	`1`	Launch frequency (higher = more fireworks)
`color`	`string \| string[]`	`randColor()`	Single color or array for fireworks
`fireworkSpeed`	`{min: number, max: number} \| number`	`{min: 4, max: 8}`	Launch velocity range or fixed speed
`fireworkSize`	`{min: number, max: number} \| number`	`{min: 2, max: 5}`	Trail thickness range or fixed size
`particleSpeed`	`{min: number, max: number} \| number`	`{min: 2, max: 7}`	Explosion particle speed range
`particleSize`	`{min: number, max: number} \| number`	`{min: 1, max: 5}`	Explosion particle size range
`canvasProps`	`ComponentProps<'canvas'>`	-	Additional canvas element props

Parameter Types

// Range for randomized values
type Range = { min: number; max: number };

// Fixed value for consistent effects
type Fixed = number;

// Color options
type Color = string | string[];

Common gotchas

Canvas sizing issues: The canvas auto-resizes to its container. If fireworks aren't showing, check that the parent has explicit dimensions like h-screen.

Performance with high population: Each firework spawns dozens of particles. Population above 5 might lag on weak devices. Test on target hardware.

Click detection problems: Click handlers are on the canvas element. Z-index conflicts with overlays can block interaction. Ensure the canvas is clickable.

Memory leaks with rapid mounting: The component cleans up requestAnimationFrame automatically, but rapidly changing props might cause issues. Use stable keys when possible.

Colors not showing: Color arrays need valid CSS color strings. Hex, RGB, and named colors all work. Invalid colors fall back to random generation.

Explore other celebratory background components for React applications:

React Fireworks Background

Interactive celebration effects

Installation

Usage

Why most firework animations look fake

Examples

High Population

Variable Sizes and Speeds

Fixed Parameters

Features

API Reference

FireworksBackground

Parameter Types

Common gotchas

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