doc/dev/plugins/breadcrumbs/templates/partials/breadcrumbs.html.twig

{% set crumbs = breadcrumbs.get() %}
{% set breadcrumbs_config = config.plugins.breadcrumbs %}
{% set divider = breadcrumbs_config.icon_divider_classes %}

{% if crumbs|length > 1 or breadcrumbs_config.show_all %}
<div id="breadcrumbs" itemscope itemtype="http://schema.org/BreadcrumbList">
    {% if breadcrumbs_config.icon_home %}
    <i class="{{ breadcrumbs_config.icon_home }}"></i>
    {% endif %}
    {% for crumb in crumbs %}
    <span itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem">
        {% if not loop.last %}
            {% if crumb.routable %}
                <a itemscope itemtype="http://schema.org/Thing" itemprop="item" href="{{ crumb.url|e }}" itemid="{{ crumb.url|e }}">
                    <span itemprop="name">{{ crumb.menu|e }}</span>
                </a>
            {% else  %}
                <span itemscope itemtype="http://schema.org/Thing" itemprop="item" itemid="{{ crumb.url|e }}">
                    <span itemprop="name">{{ crumb.menu|e }}</span>
                </span>
            {% endif %}
            <i class="{{ divider }}"></i>
        {% else %}
            {% if breadcrumbs_config.link_trailing %}
                <a itemscope itemtype="http://schema.org/Thing" itemprop="item" href="{{ crumb.url|e }}" itemid="{{ crumb.url|e }}">
                    <span itemprop="name">{{ crumb.menu|e }}</span>
                </a>
            {% else %}
                <span itemscope itemtype="http://schema.org/Thing" itemprop="item" itemid="{{ crumb.url|e }}">
                    <span itemprop="name">{{ crumb.menu|e }}</span>
                </span>
            {% endif %}
        {% endif %}
        <meta itemprop="position" content="{{ loop.index }}" />
    </span>
    {% endfor %}
</div>
{% endif %}