Add Header Example

Below is the code from middleware.ts showing how to add headers at the edge:

import { NextResponse } from 'next/server'

export function middleware() {
  // Store the response so we can modify its headers
  const response = NextResponse.next()

  // Set custom header
  response.headers.set('x-modified-edge', 'true')

  // Return response
  return response
}

Demo

https://edge-functions-add-header.vercel.app

How to Use

You can choose from one of the following two methods to use this repository:

One-Click Deploy

Deploy the example using Vercel:

Clone and Deploy

Execute create-next-app with npm or Yarn to bootstrap the example:

npx create-next-app --example https://github.com/vercel/examples/tree/main/edge-functions/add-header add-header
# or
yarn create next-app --example https://github.com/vercel/examples/tree/main/edge-functions/add-header add-header

Next, run Next.js in development mode:

npm install
npm run dev

# or

yarn
yarn dev

Deploy it to the cloud with Vercel (Documentation).