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How do I generate a “sitemap.xml” for my Next.js app on Vercel?

Guidance on how to generate a "sitemap.xml" at build time and runtime.

Justin Vitale
Knowledge Base
1 min read
Last updated November 10, 2025

In this article, we will show you how to generate a sitemap for your Next.js application on Vercel.

The Next.js App Router has built in support for generating sitemaps. You can use the sitemap.(js|ts) file convention to programmatically generate a sitemap by exporting a default function that returns an array of URLs. If using TypeScript, a Sitemap type is available.

app/sitemap.ts
import { MetadataRoute } from 'next'
 
export default function sitemap(): MetadataRoute.Sitemap {
  return [
    {
      url: 'https://acme.com',
      lastModified: new Date(),
      changeFrequency: 'yearly',
      priority: 1,
    },
    {
      url: 'https://acme.com/about',
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.8,
    },
    {
      url: 'https://acme.com/blog',
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.5,
    },
  ]
}

This will generate the following sitemap.xml file during next build:

sitemap.xml
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://acme.com</loc>
    <lastmod>2023-04-06T15:02:24.021Z</lastmod>
    <changefreq>yearly</changefreq>
    <priority>1</priority>
  </url>
  <url>
    <loc>https://acme.com/about</loc>
    <lastmod>2023-04-06T15:02:24.021Z</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://acme.com/blog</loc>
    <lastmod>2023-04-06T15:02:24.021Z</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.5</priority>
  </url>
</urlset>

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