VitePress comes with out-of-the-box support for generating a `sitemap.xml` file for your site. To enable it, add the following to your `.vitepress/config.js`:
To have `<lastmod>` tags in your `sitemap.xml`, you can enable the [`lastUpdated`](../reference/default-theme-last-updated) option.
## Options
Sitemap support is powered by the [`sitemap`](https://www.npmjs.com/package/sitemap) module. You can pass any options supported by it to the `sitemap` option in your config file. These will be passed directly to the `SitemapStream` constructor. Refer to the [`sitemap` documentation](https://www.npmjs.com/package/sitemap#options-you-can-pass) for more details. Example:
You can use the `sitemap.transformItems` hook to modify the sitemap items before they are written to the `sitemap.xml` file. This hook is called with an array of sitemap items and expects an array of sitemap items to be returned. Example: