@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 requires a deployment / site URL for generation. Add your site’s URL under your astro.config.* using the site property. 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()],
});

Note that unlike other configuration options, site is set in the root defineConfig object, rather than inside the sitemap() call.

Now, build your site for production via the astro build command. You will find both sitemap-index.xml and sitemap-0.xml in the dist/ folder (or your custom output directory if set).

After verifying that the sitemaps are built, you can add them to your site’s <head> and the robots.txt file for crawlers to pick up.

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

User-agent: *
Allow: /

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

To generate robots.txt dynamically, add a file named robots.txt.ts with the following code:

import type { APIRoute } from 'astro';

const robotsTxt = `
User-agent: *
Allow: /

Sitemap: ${new URL('sitemap-index.xml', import.meta.env.SITE).href}
`.trim();

export const GET: APIRoute = () => {
  return new Response(robotsTxt, {
    headers: {
      'Content-Type': 'text/plain; charset=utf-8',
    },
  });
};

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>

Configuration

To configure this integration, pass an object to the sitemap() function call 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.