A feature plugin to integrate basic XML Sitemaps in WordPress Core.

Note: This feature has been integrated into WordPress 5.5. If you run WordPress 5.5, you can freely disable this plugin.

As originally proposed in June 2019, this feature plugin seeks to integrate basic XML Sitemaps functionality into WordPress Core.

A short explanation of how this plugin works can be found on this make/core blog post.

Interested in contributing to this plugin? Feel free to join us in the #core-sitemaps Slack channel.

• Local Setup: Local Setup Documentation Section.
• Contributing: Contributing Documentation Section
• Testing: Testing Documentation Section.

General:

• wp_sitemaps_enabled - Filters whether XML Sitemaps are enabled or not.
• wp_sitemaps_max_urls - Filters the maximum number of URLs displayed on a sitemap.
• wp_sitemaps_register_providers - Filters the list of registered sitemap providers.
• wp_sitemaps_init - Fires when initializing sitemaps.
• wp_sitemaps_index_entry - Filters the sitemap entry for the sitemap index.

Providers:

• wp_sitemaps_post_types - Filters the list of post types to include in the sitemaps.
• wp_sitemaps_posts_entry - Filters the sitemap entry for an individual post.
• wp_sitemaps_posts_show_on_front_entry - Filters the sitemap entry for the home page when the 'show_on_front' option equals 'posts'.
• wp_sitemaps_posts_query_args - Filters the query arguments for post type sitemap queries.
• wp_sitemaps_posts_pre_url_list - Filters the posts URL list before it is generated (short-circuit).
• wp_sitemaps_posts_pre_max_num_pages - Filters the max number of pages before it is generated (short-circuit).
• wp_sitemaps_taxonomies - Filters the list of taxonomies to include in the sitemaps.
• wp_sitemaps_taxonomies_entry - Filters the sitemap entry for an individual term.
• wp_sitemaps_taxonomies_query_args - Filters the query arguments for taxonomy terms sitemap queries.
• wp_sitemaps_taxonomies_pre_url_list - Filters the taxonomies URL list before it is generated (short-circuit).
• wp_sitemaps_taxonomies_pre_max_num_pages - Filters the max number of pages before it is generated (short-circuit).
• wp_sitemaps_users_entry - Filters the sitemap entry for an individual user.
• wp_sitemaps_users_query_args - Filters the query arguments for user sitemap queries.
• wp_sitemaps_users_pre_url_list - Filters the users URL list before it is generated (short-circuit).
• wp_sitemaps_users_pre_max_num_pages - Filters the max number of pages before it is generated (short-circuit).

Stylesheets:

• wp_sitemaps_stylesheet_css - Filters the CSS for the sitemap stylesheet.
• wp_sitemaps_stylesheet_url - Filters the URL for the sitemap stylesheet.
• wp_sitemaps_stylesheet_content - Filters the content of the sitemap stylesheet.
• wp_sitemaps_stylesheet_index_url - Filters the URL for the sitemap index stylesheet.
• wp_sitemaps_stylesheet_index_content - Filters the content of the sitemap index stylesheet.

If you update the WordPress settings to discourage search engines from indexing your site, sitemaps will be disabled. Alternatively, use the wp_sitemaps_enabled filter, or use remove_action( 'init', 'wp_sitemaps_get_server' ); to disable initialization of any sitemap functionality.

You can use the wp_sitemaps_register_providers filter to disable sitemap generation for posts, users, or taxonomies.

You can use the wp_sitemaps_post_types filter to disable sitemap generation for posts of a certain post type.

By default, only public posts will be represented in the sitemap.

Similarly, the wp_sitemaps_taxonomies filter can be used to disable sitemap generation for certain taxonomies.

Example: Disabling sitemaps for the "page" post type

add_filter(
	'wp_sitemaps_post_types',
	function( $post_types ) {
		unset( $post_types['page'] );
		return $post_types;
	}
);

Example: Disabling sitemaps for the "post_tag" taxonomy

add_filter(
	'wp_sitemaps_taxonomies',
	function( $taxonomies ) {
		unset( $taxonomies['post_tag'] );
		return $taxonomies;
	}
);

The wp_sitemaps_posts_query_args, wp_sitemaps_taxonomies_query_args, and wp_sitemaps_users_query_args filters can be used to modify the underlying queries. Using these queries, certain items can be excluded.

Example: Ensuring the page with ID 42 is not included

add_filter(
	'wp_sitemaps_posts_query_args',
	function( $args ) {
		$args['post__not_in'] = isset( $args['post__not_in'] ) ? $args['post__not_in'] : array();
		$args['post__not_in'][] = 42;
		return $args;
	}
);

Example: Ensuring the category with ID 7 is not included

add_filter(
	'wp_sitemaps_taxonomies_query_args',
	function( $args ) {
		$args['exclude'] = isset( $args['exclude'] ) ? $args['exclude'] : array();
		$args['exclude'][] = 7;
		return $args;
	}
);

Example: Ensuring the user with ID 1 is not included

add_filter(
	'wp_sitemaps_users_query_args',
	function( $args ) {
		$args['exclude'] = isset( $args['exclude'] ) ? $args['exclude'] : array();
		$args['exclude'][] = 1;
		return $args;
	}
);

You can use the wp_sitemaps_posts_entry / wp_sitemaps_users_entry / wp_sitemaps_taxonomies_entry filters to add additional attributes like changefreq, priority, or lastmod to single item in the sitemap.

Example: Adding the last modified date for posts

add_filter(
    'wp_sitemaps_posts_entry',
    function( $entry, $post ) {
        $entry['lastmod'] = $post->post_modified_gmt;
        return $entry;
    },
    10,
    2
);

Similarly, you can use the wp_sitemaps_index_entry filter to add lastmod on the sitemap index. Note: changefreq and priority are not supported on the sitemap index.

Adding image sitemaps are not supported yet, but support will be added in the future so that plugin developers can add them if needed.

Use the wp_sitemaps_max_urls filter to adjust the maximum number of URLs included in a sitemap. The default value is 2000 URLs.

A variety of filters exists to allow you adjust the styling:

• wp_sitemaps_stylesheet_url - Filter the URL for the sitemap stylesheet.
• wp_sitemaps_stylesheet_index_url - Filter the URL for the sitemap index stylesheet.
• wp_sitemaps_stylesheet_content - Filter the content of the sitemap stylesheet.
• wp_sitemaps_index_stylesheet_content - Filter the content of the sitemap index stylesheet.
• wp_sitemaps_stylesheet_css - Filter the CSS only for the sitemap stylesheet.

No. Those are optional fields in the sitemaps protocol and not typically consumed by search engines. Developers can still add those fields if they really want to.

See CHANGELOG.md.