@astrojs/ sitemap

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This Astro integration generates a sitemap based on your pages when you build your Astro project.

Why Astro Sitemap

A Sitemap is an XML file that outlines all of the pages, videos, and files on your site. Search engines like Google read this file to crawl your site more efficiently. See Google’s own advice on sitemaps to learn more.

A sitemap file is recommended for large multi-page sites. If you don’t use a sitemap, most search engines will still be able to list your site’s pages, but a sitemap is a great way to ensure that your site is as search engine friendly as possible.

With Astro Sitemap, you don’t have to worry about creating this XML file yourself: the Astro Sitemap integration will crawl your statically-generated routes and create the sitemap file, including dynamic routes like [...slug] or src/pages/[lang]/[version]/info.astro generated by getStaticPaths().

This integration cannot generate sitemap entries for dynamic routes in SSR mode.

Installation

Astro includes an astro add command to automate the setup of official integrations. If you prefer, you can install integrations manually instead.

Run one of the following commands in a new terminal window.

npx astro add sitemap

pnpm astro add sitemap

yarn astro add sitemap

If you run into any issues, feel free to report them to us on GitHub and try the manual installation steps below.

Manual Install

First, install the @astrojs/sitemap package using your package manager.

npm install @astrojs/sitemap

pnpm add @astrojs/sitemap

yarn add @astrojs/sitemap

Then, apply the integration to your astro.config.* file using the integrations property:

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  // ...
  integrations: [sitemap()],
});

Usage

@astrojs/sitemap needs to know your site’s deployed URL to generate a sitemap.

Add your site’s URL as the site option in astro.config.mjs. This must begin with http:// or https://.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://stargazers.club',
  integrations: [sitemap()],
  // ...
});

With the sitemap integration configured, sitemap-index.xml and sitemap-0.xml files will be added to your output directory when building your site.

sitemap-index.xml links to all the numbered sitemap files. sitemap-0.xml lists the pages on your site. For extremely large sites, there may also be additional numbered files like sitemap-1.xml and sitemap-2.xml.

Example of generated files for a two-page website

<?xml version="1.0" encoding="UTF-8"?>
  <sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <sitemap>
    <loc>https://stargazers.club/sitemap-0.xml</loc>
  </sitemap>
</sitemapindex>

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">
  <url>
    <loc>https://stargazers.club/</loc>
  </url>
  <url>
    <loc>https://stargazers.club/second-page/</loc>
  </url>
</urlset>

Sitemap discovery

You can make it easier for crawlers to find your sitemap with links in your site’s <head> and robots.txt file.

Sitemap link in `<head>`

Add a <link rel="sitemap"> element to your site’s <head> pointing to the sitemap index file:

<head>
  <link rel="sitemap" href="/sitemap-index.xml" />
</head>

Sitemap link in `robots.txt`

If you have a robots.txt for your website, you can add the URL for the sitemap index to help crawlers:

User-agent: *
Allow: /

Sitemap: https://<YOUR SITE>/sitemap-index.xml

If you want to reuse the site value from astro.config.mjs, you can also generate robots.txt dynamically. Instead of using a static file in the public/ directory, create a src/pages/robots.txt.ts file and add the following code:

import type { APIRoute } from 'astro';

const getRobotsTxt = (sitemapURL: URL) => `
User-agent: *
Allow: /

Sitemap: ${sitemapURL.href}
`;

export const GET: APIRoute = ({ site }) => {
  const sitemapURL = new URL('sitemap-index.xml', site);
  return new Response(getRobotsTxt(sitemapURL));
};

Configuration

To configure this integration, pass an object to the sitemap() function in astro.config.mjs.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  integrations: [
    sitemap({
      // configuration options
    }),
  ],
});

filter

All pages are included in your sitemap by default. By adding a custom filter function, you can filter included pages by URL.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://stargazers.club',
  integrations: [
    sitemap({
      filter: (page) => page !== 'https://stargazers.club/secret-vip-lounge/',
    }),
  ],
});

The function will be called for every page on your site. The page function parameter is the full URL of the page currently under consideration, including your site domain. Return true to include the page in your sitemap, and false to leave it out.

To filter multiple pages, add arguments with target URLs.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://stargazers.club',
  integrations: [
    sitemap({
      filter: (page) =>
        page !== 'https://stargazers.club/secret-vip-lounge-1/' &&
        page !== 'https://stargazers.club/secret-vip-lounge-2/' &&
        page !== 'https://stargazers.club/secret-vip-lounge-3/' &&
        page !== 'https://stargazers.club/secret-vip-lounge-4/',
    }),
  ],
});

customPages

In some cases, a page might be part of your deployed site but not part of your Astro project. If you’d like to include a page in your sitemap that isn’t created by Astro, you can use this option.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://stargazers.club',
  integrations: [
    sitemap({
      customPages: ['https://stargazers.club/external-page', 'https://stargazers.club/external-page2'],
    }),
  ],
});

entryLimit

The maximum number entries per sitemap file. The default value is 45000. A sitemap index and multiple sitemaps are created if you have more entries. See this explanation of splitting up a large sitemap.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://stargazers.club',
  integrations: [
    sitemap({
      entryLimit: 10000,
    }),
  ],
});

changefreq, lastmod, and priority

These options correspond to the <changefreq>, <lastmod>, and <priority> tags in the Sitemap XML specification.

Note that changefreq and priority are ignored by Google.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://stargazers.club',
  integrations: [
    sitemap({
      changefreq: 'weekly',
      priority: 0.7,
      lastmod: new Date('2022-02-24'),
    }),
  ],
});

serialize

A function called for each sitemap entry just before writing to a disk. This function can be asynchronous.

It receives as its parameter a SitemapItem object that can have these properties:

url (absolute page URL). This is the only property that is guaranteed to be on SitemapItem.
changefreq
lastmod (ISO formatted date, String type)
priority
links.

This links property contains a LinkItem list of alternate pages including a parent page.

The LinkItem type has two fields: url (the fully-qualified URL for the version of this page for the specified language) and lang (a supported language code targeted by this version of the page).

The serialize function should return SitemapItem, touched or not.

The example below shows the ability to add sitemap specific properties individually.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://stargazers.club',
  integrations: [
    sitemap({
      serialize(item) {
        if (/exclude-from-sitemap/.test(item.url)) {
          return undefined;
        }
        if (/your-special-page/.test(item.url)) {
          item.changefreq = 'daily';
          item.lastmod = new Date();
          item.priority = 0.9;
        }
        return item;
      },
    }),
  ],
});

i18n

To localize a sitemap, pass an object to this i18n option.

This object has two required properties:

defaultLocale: String. Its value must exist as one of locales keys.
locales: Record<String, String>, key/value - pairs. The key is used to look for a locale part in a page path. The value is a language attribute, only English alphabet and hyphen allowed.

xslURL

The URL of an XSL stylesheet to style and prettify your sitemap.

The value set can be either a path relative to your configured site URL for a local stylesheet, or can be an absolute URL link to an external stylesheet.

import { defineConfig } from 'astro/config';
import sitemap from '@astrojs/sitemap';

export default defineConfig({
  site: 'https://example.com',
  integrations: [
    sitemap({
      xslURL: '/sitemap.xsl'
    }),
  ],
});

Examples

The official Astro website uses Astro Sitemap to generate its sitemap.
Browse projects with Astro Sitemap on GitHub for more examples!

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