#images

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frigid stratus
#

how can i load images that aren't in the public folder?

unkempt vineBOT
#

Hi @frigid stratus. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

In Next.js, there are two main approaches to loading images that aren't in the public folder:

1. Import Local Images from Within Your Project

You can import images directly from any folder in your project (not just public) using ES module imports:

import Image from 'next/image'
import profilePic from './me.png' // Image file in the same directory as your component

export default function Page() {
  return (
    <Image
      src={profilePic}
      alt="Picture of the author"
      // width and height are automatically provided
    />
  )
}

When you import an image file directly, Next.js will:

  • Automatically determine the width and height
  • Provide the correct aspect ratio
  • Prevent layout shift during loading
  • Optimize the image at build time

Next.js Documentation - Local Images

2. Use a Custom Loader

If your images are stored in a location outside your project structure (but not on a remote server), you can configure a custom loader:

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

Then create your loader file:

// my/image/loader.js
'use client'

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

This approach allows you to define custom logic for generating image URLs.

Next.js Documentation - Images Configuration

#

Remember that for imported images, the import must be static (not dynamic) so it can be analyzed at build time. Dynamic await import() or require() are not supported for image imports.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@frigid stratus Kapa.ai is still learning and improving, please let me know how I did by reacting below.

frigid stratus
#

@unkempt vine i have them stored in a directory outside of public, but they are custom, so i probably can't import tham manually

unkempt vineBOT
#

Let me check the knowledge base for you again. Give me one moment! :books:

#

If your images are stored in a directory outside of the public folder and you can't import them manually, you have a few options in Next.js:

1. Use process.cwd() to Read Files

You can use Node.js file system methods with process.cwd() to read images from any directory on your server:

import { promises as fs } from 'fs'
import path from 'path'
import Image from 'next/image'

// This function runs on the server at build time or request time
export async function getStaticProps() {
  const postsDirectory = path.join(process.cwd(), 'your-external-directory')
  const filenames = await fs.readdir(postsDirectory)
  
  const images = filenames.map(filename => ({
    filename,
    path: `/api/images/${filename}` // You'll need to create this API route
  }))
  
  return {
    props: {
      images,
    },
  }
}

export default function Gallery({ images }) {
  return (
    <div>
      {images.map(image => (
        <Image 
          key={image.filename}
          src={image.path}
          alt={image.filename}
          width={500}
          height={300}
        />
      ))}
    </div>
  )
}

Reading files: Use process.cwd()

2. Create an API Route to Serve Images

You'll need to create an API route to serve these images:

// pages/api/images/[filename].js
import { createReadStream } from 'fs'
import path from 'path'

export default function handler(req, res) {
  const { filename } = req.query
  const filePath = path.join(process.cwd(), 'your-external-directory', filename)
  
  const imageStream = createReadStream(filePath)
  imageStream.pipe(res)
}

3. Configure a Custom Loader

If your images follow a predictable pattern, you can create a custom loader:

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

// my-image-loader.js
export default function myLoader({ src, width, quality }) {
  return `/api/images/${src}?w=${width}&q=${quality || 75}`
}

4. Create Symlinks

Another approach is to create a symlink from your external directory to the public folder:

// In a setup script or during build
const fs = require('fs')
const path = require('path')

// Create a symlink from external directory to public/images
fs.symlinkSync(
  path.resolve('./your-external-directory'),
  path.resolve('./public/images'),
  'dir'
)

This approach was mentioned by a user in a GitHub issue as a working solution for accessing external media while still using Next.js image optimization:

GitHub Issue - Fill property for Next Image

Remember to configure remotePatterns or domains in your next.config.js if you're serving these images through an API route.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@frigid stratus Kapa.ai is still learning and improving, please let me know how I did by reacting below.

frigid stratus
#

@unkempt vine im using the app router

unkempt vineBOT
#

Let me check the knowledge base for you again. Give me one moment! :books:

#

I understand you're using the App Router in Next.js. This is important context for handling images from external directories. Here are the approaches that work specifically with the App Router:

1. Use Server Components to Access External Files

With App Router, you can leverage Server Components to read files from external directories:

// app/page.js (Server Component)
import { promises as fs } from 'fs'
import path from 'path'
import Image from 'next/image'

export default async function Gallery() {
  const imagesDirectory = path.join(process.cwd(), 'your-external-directory')
  const filenames = await fs.readdir(imagesDirectory)
  
  return (
    <div>
      {filenames.map(filename => (
        <Image 
          key={filename}
          src={`/api/images/${filename}`} // Point to an API route
          alt={filename}
          width={500}
          height={300}
        />
      ))}
    </div>
  )
}

2. Create a Route Handler for Images

In the App Router, you can create a route handler to serve your external images:

// app/api/images/[filename]/route.js
import { createReadStream } from 'fs'
import path from 'path'
import { NextResponse } from 'next/server'

export async function GET(request, { params }) {
  const { filename } = params
  const filePath = path.join(process.cwd(), 'your-external-directory', filename)
  
  // Return the file as a stream
  const fileBuffer = await fs.promises.readFile(filePath)
  return new NextResponse(fileBuffer, {
    headers: {
      'Content-Type': 'image/jpeg', // Adjust based on your image type
      'Cache-Control': 'public, max-age=31536000, immutable'
    }
  })
}

3. Create a Symlink (Recommended Approach)

Creating a symlink from your external directory to the public folder works well with the App Router and allows you to use Next.js image optimization:

# 
// In a setup script that runs before your app
const fs = require('fs')
const path = require('path')

// Create a symlink from external directory to public/images
fs.symlinkSync(
  path.resolve('./your-external-directory'),
  path.resolve('./public/images'),
  'dir'
)

Then you can reference these images in your components:

import Image from 'next/image'

export default function Page() {
  return (
    <Image
      src="/images/your-image.jpg" // Now accessible via the symlink
      alt="Description"
      width={500}
      height={300}
    />
  )
}

This symlink approach was mentioned as an effective solution in a GitHub issue discussion GitHub Issue - Fill property for Next Image.

Remember to configure remotePatterns in your next.config.js if you're serving these images through an API route.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: