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Schema markup is structured data added to a page to help search engines interpret information about entities, content, products, organizations, events, and other supported concepts. It uses a vocabulary such as Schema.org and can be implemented in several formats, including JSON-LD.
Structured data guide
Reviewed October 17, 2026
Las Vegas SEO Agency
Structured data is not a shortcut to rankings. Correct markup may help search engines understand content and can make a page eligible for certain search features, but eligibility does not guarantee that a feature will appear.
Structured data should accurately describe the content users can see and the entities the page genuinely represents. Do not mark up fabricated reviews, unavailable products, false addresses, or information that conflicts with the page.
Before adding markup, identify:
JSON-LD is commonly used because it can be maintained separately from much of the HTML content. Microdata and RDFa are other formats. Choose a consistent approach that the CMS and development team can maintain reliably.
The format alone does not make markup valid. Values, entity relationships, properties, and visible content must be correct.
Choose the most specific type that accurately describes the page or entity and is supported by the current vocabulary and relevant search documentation. Potential types, depending on the actual content, include:
Do not add every possible type to every page. Markup should clarify the page, not create a large collection of unrelated entities.
For a real organization or eligible local business, relevant properties may include name, URL, logo, contact details, and location information where accurate. Important cautions:
Structured data on a website is separate from Google Business Profile configuration.
Article markup may describe a published article’s headline, author, publication date, modification date, image, and publisher when those values are real and supported by the page. Make sure:
Breadcrumbs can represent the hierarchy leading to a page. They should reflect the visible navigation and actual site structure.
Check that labels and URLs are correct, the hierarchy is logical, and markup does not invent paths users cannot navigate.
Use specialized types only when the page genuinely represents the relevant content and meets current requirements. Product and event features may have specific eligibility rules and property requirements that change over time.
Do not use a type simply because it might provide a more attractive search result. Review the current official documentation for the intended feature before implementation.
Review markup is particularly sensitive to eligibility and policy. Do not fabricate reviews, aggregate ratings, or testimonials. Do not assume that a business can mark up self-serving reviews on its own site for a search feature.
Only implement review-related markup when the content, entity relationship, and current search guidelines allow it. A validator accepting the syntax does not mean the markup qualifies for a rich result.
Common issues include invalid JSON, missing required properties, incorrect data types, malformed URLs, conflicting entities, and values that do not match visible content.
A syntax validator checks whether markup is structured correctly. A rich-result test checks eligibility for supported features. Search Console reports may provide ongoing information for eligible types. These tools answer different questions and should not be treated as interchangeable.
CMS plugins can generate schema automatically. Inspect the output rather than assuming the plugin is correct. Watch for:
For multi-location websites, ensure each page represents the correct location and entity relationships.
Service pages may benefit from clear content about the service, provider, and relevant relationships, but do not assume that a Service object creates a special search feature or ranking benefit.
Location pages should accurately represent a real branch or service area. Do not use local business markup to imply a physical office that does not exist. Keep visible details and markup consistent. The city page guide covers the same line from the content side.
| Myth | Reality |
|---|---|
| Schema guarantees higher rankings. | It does not. |
| Valid schema guarantees a rich result. | Eligibility and display depend on search systems and applicable requirements. |
| More schema types are always better. | Irrelevant or conflicting markup adds complexity without improving clarity. |
| A local business schema creates a Google Business Profile. | It does not. |
| A plugin can be trusted without inspection. | Generated markup should still be checked for accuracy and conflicts. |
Structured data is useful when it is accurate, relevant, and maintained. Select an appropriate type, follow current documentation, validate the output, align it with visible content, and avoid promising rankings or rich results.
FAQ
Schema.org versus Google’s requirements, and what markup can realistically do.
No. Schema.org defines a vocabulary, while Google has additional documentation and eligibility rules for its search features.
No. Use types that accurately represent the page and entity. A business’s homepage or location page may have different needs from a blog article.
Do not treat it as a guaranteed ranking lever. Its primary purpose is to communicate structured information and potentially support eligible search features.
Only when the markup and content meet the relevant specifications and policies. Do not assume all third-party ratings qualify.
After template or plugin changes, business-information updates, migrations, and periodically as part of technical SEO maintenance.
Keep Going
Six companion resources, each covering one job: setting up, checking, choosing, photographing, appealing and diagnosing.
The full framework: crawling, indexing, canonicals and performance.
Every technical check in one list, from crawling to conversion tracking.
Las Vegas SEO Agency
We inspect what your plugins actually output, look for duplicate entities, stale values and markup that contradicts the visible page, then retest the live URL after every change.
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