@pixel-puppy/react

Official React library for Pixel Puppy - Transform and optimize images with WebP conversion and smart resizing.

Features

• Simple React Component - Drop-in replacement for <img> tags
• Automatic WebP Conversion - Serve modern image formats for better performance
• Smart Responsive Images - Automatic srcset generation with device breakpoints for optimal loading on all screen sizes
• Multiple Strategies - Intelligent selection between non-responsive, default, width-based, and sizes-based strategies
• TypeScript Support - Fully typed with comprehensive type definitions
• Zero Configuration - Works out of the box with sensible defaults
• Ref Forwarding - Access the underlying img element when needed

Installation

npm

npm install @pixel-puppy/react

Bun

bun add @pixel-puppy/react

Quick Start

import { Image } from '@pixel-puppy/react'

function App() {
  return (
    <Image
      alt="A beautiful photo"
      project="my-project"
      src="https://example.com/photo.jpg"
    />
  )
}

API Reference

Image Component Props

Required Props

• project (string) - Your Pixel Puppy project identifier
• src (string) - The URL of the original image to transform

Transformation Options

• width (number, optional) - The desired width in pixels. The image will be resized to this width while maintaining aspect ratio. When provided without sizes, generates srcset with ALL common breakpoints plus width plus 2x variant.
• format ('webp' | 'png', optional) - The desired output format. Defaults to 'webp' for optimal performance.
• responsive (boolean, optional) - Whether to generate responsive image attributes (srcset, sizes). When false, returns only a single src URL. Defaults to true.
• sizes (string, optional) - HTML sizes attribute value for responsive images. Describes the image's display size across different viewport widths. When provided, uses sizes-based srcset strategy with filtered breakpoints. Example: "(min-width: 768px) 50vw, 100vw"

Standard HTML Img Attributes

The Image component supports all standard HTML img element attributes including:

• alt - Alternative text for accessibility
• className - CSS classes
• style - Inline styles
• loading - Loading strategy ('lazy' | 'eager')
• decoding - Decoding hint ('async' | 'auto' | 'sync')
• crossOrigin - CORS settings
• And all other standard img attributes

Ref Forwarding

The Image component forwards refs to the underlying img element:

import { useRef } from 'react'
import { Image } from '@pixel-puppy/react'

function App() {
  const imgRef = useRef<HTMLImageElement>(null)

  return (
    <Image
      alt="A photo"
      project="my-project"
      ref={imgRef}
      src="https://example.com/photo.jpg"
    />
  )
}

Responsive Image Strategies

The Image component automatically selects the best responsive image strategy based on the props you provide:

1. Non-responsive Strategy (responsive={false}): Returns only a single src URL with no srcset or sizes. Use this when you want a specific image size without responsive behavior.

2. Default Strategy (no width or sizes): Generates srcset with all common device breakpoints (480w, 640w, 750w, 828w, 1080w, 1200w, 1920w, 2048w, 3840w) and sets sizes="100vw". Ideal for full-width images like heroes or banners.

3. Width-based Strategy (width provided, no sizes): Generates srcset with ALL common device breakpoints PLUS your provided width PLUS a 2x variant. Sets sizes="(min-width: 1024px) 1024px, 100vw". Ensures mobile alternatives are always available while supporting high-DPI displays.

4. Sizes-based Strategy (sizes provided): Generates srcset filtered based on the smallest vw value in your sizes attribute. Automatically excludes unnecessary breakpoints for optimal performance.

Usage Examples

Non-responsive Mode (Single URL)

For when you need a specific size without responsive behavior:

import { Image } from '@pixel-puppy/react'

function Avatar() {
  return (
    <Image
      alt="User avatar"
      project="my-project"
      responsive={false}
      src="https://example.com/avatar.jpg"
      width={64}
    />
  )
}

Default Strategy (Full-Width Images)

Automatically generates srcset for all device breakpoints:

import { Image } from '@pixel-puppy/react'

function Hero() {
  return (
    <Image
      alt="Hero image"
      className="w-full h-auto"
      project="my-project"
      src="https://example.com/hero.jpg"
    />
  )
}
// Generates srcset: 480w, 640w, 750w, 828w, 1080w, 1200w, 1920w, 2048w, 3840w
// Sets sizes="100vw"

Width-based Strategy (Fixed Width with Mobile Alternatives)

Provides ALL breakpoints plus your width plus 2x for retina:

import { Image } from '@pixel-puppy/react'

function ProductImage() {
  return (
    <Image
      alt="Product photo"
      project="my-project"
      src="https://example.com/product.jpg"
      width={800}
    />
  )
}
// Generates srcset: 480w, 640w, 750w, 800w, 1600w (2x), 1920w, 2048w, 3840w
// Sets sizes="(min-width: 1024px) 1024px, 100vw"
// Sets width={800}

Sizes-based Strategy (Custom Responsive Behavior)

Filter breakpoints based on your layout needs:

import { Image } from '@pixel-puppy/react'

function SidebarImage() {
  return (
    <Image
      alt="Sidebar image"
      project="my-project"
      sizes="(min-width: 1024px) 33vw, (min-width: 768px) 50vw, 100vw"
      src="https://example.com/sidebar.jpg"
      width={600}
    />
  )
}
// Automatically filters breakpoints based on smallest vw (33vw)
// Only includes breakpoints >= ~160px (33% of 480px)

Custom Format

import { Image } from '@pixel-puppy/react'

function Logo() {
  return (
    <Image
      alt="Company logo"
      format="png"
      project="my-project"
      src="https://example.com/logo.png"
      width={200}
    />
  )
}

Lazy Loading

import { Image } from '@pixel-puppy/react'

function ProductGrid() {
  return (
    <div className="grid grid-cols-3 gap-4">
      {products.map((product) => (
        <Image
          key={product.id}
          alt={product.name}
          className="rounded-lg"
          loading="lazy"
          project="my-project"
          src={product.imageUrl}
          width={400}
        />
      ))}
    </div>
  )
}

Responsive Images for Different Screen Sizes

import { Image } from '@pixel-puppy/react'

function ResponsiveImage() {
  return (
    <picture>
      <source
        media="(min-width: 1024px)"
        srcSet="https://pixelpuppy.io/api/image?project=my-project&url=https://example.com/photo.jpg&format=webp&width=1920"
      />
      <source
        media="(min-width: 768px)"
        srcSet="https://pixelpuppy.io/api/image?project=my-project&url=https://example.com/photo.jpg&format=webp&width=1024"
      />
      <Image
        alt="Responsive photo"
        project="my-project"
        src="https://example.com/photo.jpg"
        width={640}
      />
    </picture>
  )
}

With Tailwind CSS

import { Image } from '@pixel-puppy/react'

function Card() {
  return (
    <div className="max-w-sm rounded overflow-hidden shadow-lg">
      <Image
        alt="Card image"
        className="w-full"
        project="my-project"
        src="https://example.com/card-image.jpg"
        width={400}
      />
      <div className="px-6 py-4">
        <div className="font-bold text-xl mb-2">Card Title</div>
        <p className="text-gray-700 text-base">Card description</p>
      </div>
    </div>
  )
}

TypeScript Support

This library is written in TypeScript and provides comprehensive type definitions:

import { Image, type ImageProps } from '@pixel-puppy/react'

const imageProps: ImageProps = {
  alt: 'A photo',
  format: 'webp',
  project: 'my-project',
  src: 'https://example.com/photo.jpg',
  width: 800
}

function MyImage() {
  return <Image {...imageProps} />
}

How It Works

The Image component uses the @pixel-puppy/javascript library under the hood to build optimized image URLs. When you provide a project, src, and optional transformation options, it constructs a Pixel Puppy API URL that:

1. Fetches your original image
2. Converts it to the specified format (WebP by default)
3. Resizes it to the specified width (if provided)
4. Serves the optimized result through a global CDN

The component is a thin wrapper around the standard HTML <img> element, forwarding all standard attributes and supporting ref forwarding.

Related Packages

• @pixel-puppy/javascript - Core JavaScript/TypeScript library for building Pixel Puppy URLs

Contributing

Contributions are welcome! Please see CONTRIBUTING.md for details.

License

MIT License - see LICENSE for details.

Support

• Documentation: https://pixelpuppy.io/docs
• Issues: https://github.com/Artmann/pixel-puppy-react/issues
• Email: [email protected]