imágenes

Si deseas usar un proveedor de la nube para optimizar imágenes en lugar de utilizar la API de Optimización de Imágenes integrada de Next.js, puedes configurar next.config.js con lo siguiente:

next.config.js
module.exports = {
  images: {
    loader: 'custom',
    loaderFile: './my/image/loader.js',
  },
}

Este loaderFile debe apuntar a un archivo relativo a la raíz de tu aplicación Next.js. El archivo debe exportar una función predeterminada que devuelva una cadena, por ejemplo:

my/image/loader.js
export default function myImageLoader({ src, width, quality }) {
  return `https://example.com/${src}?w=${width}&q=${quality || 75}`
}

Alternativamente, puedes usar la prop loader para pasar la función a cada instancia de next/image.

Para aprender más sobre cómo configurar el comportamiento de la API de Optimización de Imágenes integrada y el Componente de Imagen, consulta las Opciones de Configuración de Imagen para ver las opciones disponibles.

Ejemplos de Configuración de Cargadores

Akamai

// Docs: https://techdocs.akamai.com/ivm/reference/test-images-on-demand
export default function akamaiLoader({ src, width, quality }) {
  return `https://example.com/${src}?imwidth=${width}`
}

AWS CloudFront

// Docs: https://aws.amazon.com/developer/application-security-performance/articles/image-optimization
export default function cloudfrontLoader({ src, width, quality }) {
  const url = new URL(`https://example.com${src}`)
  url.searchParams.set('format', 'auto')
  url.searchParams.set('width', width.toString())
  url.searchParams.set('quality', (quality || 75).toString())
  return url.href
}

Cloudinary

// Demo: https://res.cloudinary.com/demo/image/upload/w_300,c_limit,q_auto/turtles.jpg
export default function cloudinaryLoader({ src, width, quality }) {
  const params = ['f_auto', 'c_limit', `w_${width}`, `q_${quality || 'auto'}`]
  return `https://example.com/${params.join(',')}${src}`
}

Cloudflare

// Docs: https://developers.cloudflare.com/images/transform-images
export default function cloudflareLoader({ src, width, quality }) {
  const params = [`width=${width}`, `quality=${quality || 75}`, 'format=auto']
  return `https://example.com/cdn-cgi/image/${params.join(',')}/${src}`
}

Contentful

// Docs: https://www.contentful.com/developers/docs/references/images-api/
export default function contentfulLoader({ src, width, quality }) {
  const url = new URL(`https://example.com${src}`)
  url.searchParams.set('fm', 'webp')
  url.searchParams.set('w', width.toString())
  url.searchParams.set('q', (quality || 75).toString())
  return url.href
}

Fastly

// Docs: https://developer.fastly.com/reference/io/
export default function fastlyLoader({ src, width, quality }) {
  const url = new URL(`https://example.com${src}`)
  url.searchParams.set('auto', 'webp')
  url.searchParams.set('width', width.toString())
  url.searchParams.set('quality', (quality || 75).toString())
  return url.href
}

Gumlet

// Docs: https://docs.gumlet.com/reference/image-transform-size
export default function gumletLoader({ src, width, quality }) {
  const url = new URL(`https://example.com${src}`)
  url.searchParams.set('format', 'auto')
  url.searchParams.set('w', width.toString())
  url.searchParams.set('q', (quality || 75).toString())
  return url.href
}

ImageEngine

// Docs: https://support.imageengine.io/hc/en-us/articles/360058880672-Directives
export default function imageengineLoader({ src, width, quality }) {
  const compression = 100 - (quality || 50)
  const params = [`w_${width}`, `cmpr_${compression}`)]
  return `https://example.com${src}?imgeng=/${params.join('/')`
}

Imgix

// Demo: https://static.imgix.net/daisy.png?format=auto&fit=max&w=300
export default function imgixLoader({ src, width, quality }) {
  const url = new URL(`https://example.com${src}`)
  const params = url.searchParams
  params.set('auto', params.getAll('auto').join(',') || 'format')
  params.set('fit', params.get('fit') || 'max')
  params.set('w', params.get('w') || width.toString())
  params.set('q', (quality || 50).toString())
  return url.href
}

PixelBin

// Doc (Resize): https://www.pixelbin.io/docs/transformations/basic/resize/#width-w
// Doc (Optimise): https://www.pixelbin.io/docs/optimizations/quality/#image-quality-when-delivering
// Doc (Auto Format Delivery): https://www.pixelbin.io/docs/optimizations/format/#automatic-format-selection-with-f_auto-url-parameter
export default function pixelBinLoader({ src, width, quality }) {
  const name = '<your-cloud-name>'
  const opt = `t.resize(w:${width})~t.compress(q:${quality || 75})`
  return `https://cdn.pixelbin.io/v2/${name}/${opt}/${src}?f_auto=true`
}

Sanity

// Docs: https://www.sanity.io/docs/image-urls
export default function sanityLoader({ src, width, quality }) {
  const prj = 'zp7mbokg'
  const dataset = 'production'
  const url = new URL(`https://cdn.sanity.io/images/${prj}/${dataset}${src}`)
  url.searchParams.set('auto', 'format')
  url.searchParams.set('fit', 'max')
  url.searchParams.set('w', width.toString())
  if (quality) {
    url.searchParams.set('q', quality.toString())
  }
  return url.href
}

Sirv

// Docs: https://sirv.com/help/articles/dynamic-imaging/
export default function sirvLoader({ src, width, quality }) {
  const url = new URL(`https://example.com${src}`)
  const params = url.searchParams
  params.set('format', params.getAll('format').join(',') || 'optimal')
  params.set('w', params.get('w') || width.toString())
  params.set('q', (quality || 85).toString())
  return url.href
}

Supabase

// Docs: https://supabase.com/docs/guides/storage/image-transformations#nextjs-loader
export default function supabaseLoader({ src, width, quality }) {
  const url = new URL(`https://example.com${src}`)
  url.searchParams.set('width', width.toString())
  url.searchParams.set('quality', (quality || 75).toString())
  return url.href
}

Thumbor

// Docs: https://thumbor.readthedocs.io/en/latest/
export default function thumborLoader({ src, width, quality }) {
  const params = [`${width}x0`, `filters:quality(${quality || 75})`]
  return `https://example.com${params.join('/')}${src}`
}

ImageKit.io

// Docs: https://imagekit.io/docs/image-transformation
export default function imageKitLoader({ src, width, quality }) {
  const params = [`w-${width}`, `q-${quality || 80}`]
  return `https://ik.imagekit.io/your_imagekit_id/${src}?tr=${params.join(',')}`
}

Nitrogen AIO

// Docs: https://docs.n7.io/aio/intergrations/
export default function aioLoader({ src, width, quality }) {
  const url = new URL(src, window.location.href)
  const params = url.searchParams
  const aioParams = params.getAll('aio')
  aioParams.push(`w-${width}`)
  if (quality) {
    aioParams.push(`q-${quality.toString()}`)
  }
  params.set('aio', aioParams.join(';'))
  return url.href
}

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