Multiple examples of how to customize the Yoast SEO breadcrumbs

yoast_seo_breadcrumb_add_woo_shop.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/*
 * Add shop link to the Yoast SEO breadcrumbs for a WooCommerce shop page.
 * Credit: https://wordpress.stackexchange.com/users/8495/rjb
 * Last Tested: Apr 20 2017 using Yoast SEO 4.6 on WordPress 4.7.3
 */

add_filter( 'wpseo_breadcrumb_links', 'wpseo_breadcrumb_add_woo_shop_link' );

function wpseo_breadcrumb_add_woo_shop_link( $links ) {
    global $post;

    if ( is_woocommerce() ) {
        $breadcrumb[] = array(
            'url' => get_permalink( woocommerce_get_page_id( 'shop' ) ),
            'text' => 'Shop',
        );

        array_splice( $links, 1, -2, $breadcrumb );
    }

    return $links;
}

yoast_seo_breadcrumb_append_link.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/*
 * Add a link to the Yoast SEO breadcrumbs
 * Credit: https://wordpress.stackexchange.com/users/8495/rjb
 * Last Tested: Feb 27 2024 using Yoast SEO 22.1 on WordPress 6.4.3
 *********
 * DIFFERENT POST TYPES
 * Post: Change 123456 to the post ID
 * Page: Change is_single to is_page and 123456 to the page ID
 * Custom Post Type: Change is_single to is_singular and 123456 to the 'post_type_slug'
    Example: is_singular( 'cpt_slug' )
 *********
 * MULTIPLE ITEMS
 * Multiple of the same type can use an array.
    Example: is_single( array( 123456, 234567, 345678 ) )
 * Multiple of different types can repeat the if statement
 */

add_filter( 'wpseo_breadcrumb_links', 'yoast_seo_breadcrumb_append_link' );

function yoast_seo_breadcrumb_append_link( $links ) {
    global $post;

    if ( is_single ( 123456 ) ) {
        $breadcrumb[] = array(
            'url' => site_url( '/blog/' ),
            'text' => 'Blog',
        );

        array_splice( $links, 1, -2, $breadcrumb );
    }

    return $links;
}

yoast_seo_breadcrumb_remove_limited.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/*
 * Remove breadcrumbs for specific items
 * Credit: Yoast team
 * Last Tested: Jul 21 2022 using Yoast SEO 19.3 on WordPress 6.0.1
 *********
 * DIFFERENT POST TYPES
 * Post: Change 123456 to the post ID
 * Page: Change is_single to is_page and 123456 to the page ID
 * Custom Post Type: Change is_single to is_singular and 123456 to the 'post_type_slug'
    Example: is_singular( 'cpt_slug' )
 *********
 * MULTIPLE ITEMS
 * Multiple of the same type can use an array.
    Example: is_single( array( 123456, 234567, 345678 ) )
 * Multiple of different types can repeat the if statement
 */

add_filter( 'wpseo_breadcrumb_links', 'wpseo_breadcrumb_remove_limited' );

function wpseo_breadcrumb_remove_limited( $breadcrumbs ) {
    if ( is_single ( 123456 ) ) {
		return array(
			'url' => '',
			'text' => ''
		);
    }
	else {
		return $breadcrumbs;
	}
}

yoast_seo_overwrite_rankmath_bc_shortcode.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/* Overwrite Rank Math breadcrumb shortcode with Yoast breadcrumbs
 * Credit: Yoast team
 * Last Tested: April 10, 2023 using Yoast SEO 20.4 on WordPress 6.2
 * Rank Math must be inactive to overwrite the shortcode
 */

add_action('init', 'overwrite_rankmath_bc_shortcode_with_Yoast');

function overwrite_rankmath_bc_shortcode_with_Yoast() {
  add_shortcode('rank_math_breadcrumb', 'my_custom_wpseo_breadcrumb');
}

function my_custom_wpseo_breadcrumb() {
  return do_shortcode('[wpseo_breadcrumb]');
}

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for people who need to update the url for the categories

// EDITING CATEGORY URL
add_filter( 'wpseo_breadcrumb_links', 'custom_breadcrumb_links' );

function custom_breadcrumb_links( $links ) {
    // Loop through the breadcrumb links array
    foreach ( $links as $index => $link ) {
        // Check if this is the CATEGORY
        if ( $link['text'] === 'Blog' ) {
            // Set the custom URL for breadcrumb
            $custom_url = 'https://example.com/blog';

            // Modify the link array with the custom URL
            $links[$index]['url'] = $custom_url;
			
        } elseif ( $link['text'] === 'Installers' ) {
			// Set the custom URL for breadcrumb
            $custom_url = 'https://example.com/installer';

            // Modify the link array with the custom URL
            $links[$index]['url'] = $custom_url;
			
		} elseif( $link['text'] === 'Competitors' ) {
			// Set the custom URL for breadcrumb
            $custom_url = 'https://example.com/competitor';

            // Modify the link array with the custom URL
            $links[$index]['url'] = $custom_url;
			
		}
    }

    return $links;
}