**Three schema types form the baseline every site should have: Organization, WebSite and BreadcrumbList.** This check looks for all three. Together they tell engines who runs the site (Organization), describe the site itself and can enable a sitelinks search box (WebSite), and clarify where each page sits in your structure (BreadcrumbList) — the foundational markup a well-optimised site provides.
It checks for the three foundational schema types every site benefits from having. Specifically:
- Organization — identifies who runs the site (name, logo, URL), supporting your entity and brand presence.
- WebSite — describes the site itself and can enable a sitelinks search box in Google results.
- BreadcrumbList — shows each page's position in the site hierarchy, often surfaced as breadcrumbs in results.
All three present passes; one or two present is a warning; none of the recommended types is a fail.
GEObubbly checks the page (and site) for Organization, WebSite and BreadcrumbList schema. It's a core, scored Structured Data check that runs directly against the markup.
Beyond page-specific markup like articles or products, three schema types form the baseline every site should provide, because each describes a different layer of your presence. Organization identifies the entity behind the site — name, logo, URL — underpinning your entity and brand recognition. WebSite describes the site as a whole and, with the right markup, can enable a sitelinks search box directly in Google's results. BreadcrumbList declares where each page sits in your hierarchy, which Google often surfaces as breadcrumb trails in the search listing and which helps engines understand your site structure. Together they give engines a clear, consistent picture of who you are and how your site is organised — a foundation that page-level schema builds on. They're typically site-wide, so adding them once benefits every page. For GEO, this structural clarity helps AI engines map your site and attribute content to the right entity.
Three foundational types benefit virtually every site: Organization, which identifies who runs the site and underpins your entity and brand recognition; WebSite, which describes the site as a whole and can enable a sitelinks search box in Google; and BreadcrumbList, which declares each page's place in your hierarchy and often appears as breadcrumb trails in search results. Beyond these baselines, page-specific types like Article, Product, FAQ and Review add value where relevant. Starting with the three foundational types gives engines a clear picture of your identity and structure that everything else builds on.
WebSite schema describes your site as an entity and can include a SearchAction that tells Google your site has its own search. When eligible, this can produce a sitelinks search box — a search field shown directly within your result in Google — letting users search your site straight from the SERP. Even without the search box, WebSite schema helps engines understand the site as a whole and associate it with your name. It's a foundational, site-wide markup that's worth adding once to benefit your overall search presence.
BreadcrumbList schema describes the trail of pages leading to the current one — for example Home › Category › Product — in a machine-readable way. Google often uses it to display breadcrumb navigation in the search result instead of (or alongside) the raw URL, which makes the listing clearer and shows where the page sits in your site. It also helps engines understand your site's hierarchy and the relationships between pages. Adding BreadcrumbList to your templated pages is a straightforward improvement that enhances both how results look and how your structure is understood.
Organization and WebSite schema are typically declared site-wide (often on the home page or in a shared template) since they describe the site and entity as a whole, so they effectively apply across the site rather than needing duplication on every page. BreadcrumbList, by contrast, is page-specific — each page should declare its own breadcrumb trail reflecting where it sits. In practice, implementing the three through your templates means every page is covered appropriately: the entity and site markup present, and an accurate breadcrumb for that page's position.
Yes. Organization schema gives AI engines a clear entity to attribute your content to, WebSite schema describes the site as a whole, and BreadcrumbList clarifies how pages relate within your structure — all of which help engines map and understand your site rather than treating pages in isolation. This structural and entity clarity supports accurate citation, since the engine can connect a cited page to a recognised organisation and understand its context. As a foundation, these types complement the more specific content schema that drives understanding for GEO.