What is schema markup, and how to use it?

Author

Mia Green

Sr. SEO Specialist

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Schema markup, or more precisely, structured data markup, is one of those tools that often gets overlooked despite its significant impact. The idea of embedding lines of code into your website might seem technical or intimidating at first, but once you understand what schema does, it becomes one of the most logical and straightforward SEO enhancements you can implement.

In simple terms, schema markup is a structured language that you add to your web pages to tell search engines exactly what your content is about. For example:

  • “This page is an article”
  • “This product costs $29 and has a 4.8-star rating”
  • “This event takes place next Tuesday in Houston”

Rather than letting the search engine guess, you are giving it the context upfront. This added clarity often translates into more meaningful search results for your audience.

A quick example

Imagine you have written a page about a book. By adding the appropriate Book schema, Google can display rich details in search results, such as the book’s cover, author, publication date, and review ratings. That transforms a basic blue link into a result that stands out, provides context, and earns more clicks.

I have encountered this in actual project scenarios. Even when a page’s position in the rankings did not change, implementing schema markup led to a clear uptick in click-through rate. Users naturally gravitate toward results that look more complete and trustworthy.

Where schema comes from and how it works

Schema.org is a collaborative project between Google, Bing, Yahoo, and Yandex. The goal was to create a unified vocabulary for describing online content in a way that all search engines can understand, an important consideration when developing an effective SEO content strategy.

Today, there are thousands of types of schemas available. Google recommends using the JSON-LD format. It is clean, readable, and can be added to your HTML without affecting how the page looks to users.

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What kind of content can be marked up with schema?

Here are a few examples:

  • Articles and blog posts
  • Products with pricing, availability, and reviews
  • Videos
  • Recipes
  • People, companies, and organizations
  • Events and webinars
  • FAQs, how-to instructions, and breadcrumb navigation

Next, we will dive into the real question. Is schema markup good for SEO?

Is schema markup good for SEO?

This is one of the most common questions I get from clients, marketers, and even developers. The short answer is YES, schema markup is good for SEO. But maybe not in the way some people think. It may not directly push rankings higher in Google, but it will improve how content appears in search results, and that can have a big impact.

CTR before and after schema

To give a practical example, in one project for an e-commerce website, we added structured data to its product pages. The keyword rankings barely moved, but within a few weeks, click-through rates improved by nearly 20 percent. That type of change matters, especially if you are trying to stand out in a crowded space.

Before and after schema

Modern search engines aim to understand the intent behind a query, not just the keywords. Schema helps clarify what a page is about. For example, if someone searches for “affordable digital cameras”, Google gives preference to pages that highlight product names, prices, availability, and reviews. Schema makes that information visible to the algorithm. Without it, the content might be ignored, even if it is exactly what the user needs.

In my experience, schema markup is less of a technical trick and more of a communication tool. It bridges the gap between the content and the search engine’s understanding of it.

While schema may not directly affect ranking algorithms, it improves visibility, relevance, and user engagement. And those are exactly the kinds of signals that strengthen SEO performance over time.

How to use schema markup on your website

At this point, you are probably wondering how to actually apply schema markup to your website. The good news is that you do not need to be a developer or write complex code to get started. There are multiple ways to implement schema, depending on your website content strategy, platform, and your level of technical comfort.

In this section, I will walk you through three main approaches, along with practical examples for each.

Method 1: Manual implementation using JSON-LD

Google recommends using JSON-LD (JavaScript Object Notation for Linked Data). It is clean, easy to read, and does not interfere with the HTML structure of the page. Here is a basic example of what it looks like for a blog article:

<script type=”application/ld+json”>
{
“@context”: “https://schema.org”,
“@type”: “Article”,
“headline”: “How to Use Schema Markup on Your Website”,
“author”: {
“@type”: “Person”,
“name”: “mia”
},
“datePublished”: “2025-07-26”,
“publisher”: {
“@type”: “Organization”,
“name”: “OWDT”,
“logo”: {
“@type”: “ImageObject”,
“url”: “https://owdt.com/logo.png”
}
}
}
</script>

This snippet can be added to the <head> section of the page or before the closing </body> tag. The details can be tailored for other types of content, such as products, services, events, or videos.

Method 2: Using plugins or CMS integrations

If the website runs on WordPress, Shopify, Wix, or a similar content management system, there are plugins and built-in features that allow adding schema markup without touching any code. For WordPress, tools like Rank Math and Yoast SEO offer schema options for blog posts, products, FAQs, and more.

For example, if you are writing a service page and want to highlight business hours, location, and reviews, plugins like Schema Pro can handle that automatically in the background.

This is usually the easiest method for non-developers, and it covers most common use cases.

Method 3: Structured data for e-commerce

For an online store, adding schema markup to the product pages is a must. It allows Google to display key product information directly in search results, like:

  • Product name
  • Price
  • Availability
  • Aggregate rating
  • Number of reviews

Here is an example of a Product Schema:

<div>{
“@context”: “https://schema.org/”,
“@type”: “Product”,
“name”: “Wireless Earbuds X200”,
“image”: “https://example.com/earbuds.jpg”,
“description”: “High-quality wireless earbuds with noise cancellation.”,
“brand”: {
“@type”: “Brand”,
“name”: “XBrand”
},
“offers”: {
“@type”: “Offer”,
“priceCurrency”: “USD”,
“price”: “89.99”,
“availability”: “https://schema.org/InStock”
},
“aggregateRating”: {
“@type”: “AggregateRating”,
“ratingValue”: “4.5”,
“reviewCount”: “135”
}
}</div>

For e-commerce businesses, these details do more than boost visibility; they help build credibility and trust before the user even lands on the page, which is why they deserve a spot on any e-commerce SEO checklist.

Tip: Adding schema is not just about checking a box. You want to match the markup with the actual content on the page. Google has become much better at detecting inconsistencies, and misleading markup can hurt the website instead of helping it.

What is schema markup in local SEO

If you run a local business, whether it is a restaurant, a dental clinic, a boutique, or even an SEO agency, showing up in local search results is essential.

Schema markup plays a key role in how the business is displayed in local search. In the context of local SEO services, that visibility often leads to real-world actions like phone calls, walk-ins, or online bookings.

Why local schema matters

Imagine someone searches for “SEO company Houston” or “web design company in Houston” on Google. The search engine aims to return results that are not only relevant but also locally accurate. One way it makes that decision is by reading structured data on the website. This includes the business type, location, contact number, and operating hours.

When this information is properly marked up using schema, the chances of appearing in rich results, local packs, and even voice search increase significantly. Without it, the website may still show up, but with less detail and lower visibility.

Learn how schema markup connects to ranking higher in local search; explore What Is Local SEO.

Example: Local Business Schema

Here is a simple example of schema markup using JSON-LD for a small business, such as a neighborhood bakery:

<div>{
“@context”: “https://schema.org”,
“@type”: “LocalBusiness”,
“name”: “Flour & Butter Bakery”,
“image”: “https://example.com/logo.png”,
“address”: {
“@type”: “PostalAddress”,
“streetAddress”: “123 Main St”,
“addressLocality”: “Austin”,
“addressRegion”: “TX”,
“postalCode”: “78701”,
“addressCountry”: “US”
},
“telephone”: “+1-512-555-1234”,
“openingHours”: “Mo-Sa 08:00-19:00”,
“url”: “https://flourbutter.com”
}</div>

This kind of markup allows Google to understand that your business is tied to a physical location that users can visit, call, or map, which is a key signal in local SEO marketing for improving visibility in relevant searches. It also helps surface your business in local packs when someone searches from nearby.

Schema and Google Business Profile work together

One thing I often emphasize to clients is that schema markup is not a replacement for the Google Business Profile. Instead, it works alongside it. Both are about presenting the business in a clear, structured way, and both are essential to effective Google Business Profile optimization. Schema just gives more control, especially when it comes to real-time content updates on the website.

What else can be marked up locally?

There is more information beyond basic contact info. Schema allows you to include:

  • Customer reviews
  • Specific services offered
  • Accepted payment methods
  • Business coordinates for maps
  • Links to reservation or booking tools

For instance, a local dental office may use the Dentist schema type and include details about insurance, office hours, and online appointment scheduling.

When working through the technical SEO checklist, schema for local SEO should be near the top. It is no longer optional. It is part of the foundation for strong visibility in your area.

Once you understand how schema markup works, it can be tempting to apply it across every corner of the website. But just like with most aspects of SEO, quality matters more than quantity. The schema must be implemented thoughtfully and accurately. If it is misused or misaligned with your actual content, it can lead to confusion for search engines or even trigger penalties.

Here are some practical guidelines I follow when implementing schema markup at OWDT and when advising clients.

Use the JSON-LD format

Google recommends using JSON-LD for structured data. It is cleaner, easier to maintain, and does not clutter your HTML code. This format website inside a script tag and does not interfere with your site’s visual layout. Microdata and RDFa still work in some cases, but they tend to be harder to manage, especially at scale.

Match markup to real content

This is a critical rule. Always ensure that the information included in the schema matches what users can see on the page. For example, if you label a page with a “Product” schema, but there is no product content visible, Google might flag the markup or even stop showing rich results.

We once audited a website that lost nearly all of its enhanced snippets. The issue? Their blog articles were marked up as products. Correcting this one detail brought rich results back within a few days.

Be selective with schema types

It is not about how much schema to use, but how relevant and specific it can be. For a blog, types like Article, BreadcrumbList, and Author are usually sufficient. For a service page, LocalBusiness or Service often works best.

If you are already optimizing your site’s on-page SEO, schema markup should be seen as a natural companion, not an extra step.

Always validate before publishing

Before going live, use the Rich Results Test from Google. It shows exactly what Google sees, what is valid, and whether the page is eligible for rich results.

Tip: You can also double-check with the Schema.org validator to catch any structural issues. This step saves you from the all-too-common scenario where you add structured data, but nothing appears in search results.

Keep your markup up to date

Content evolves, and your schema should too. I recommend building schema audits into your regular website maintenance cycle. This is something every technical SEO company should be doing as part of their monthly or quarterly workflow. Outdated or broken markup can hurt just as much as having none at all.

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How to use a schema markup generator to save time and reduce errors

If you are not comfortable writing JSON-LD code by hand, you are not alone. Many website owners, marketers, and even developers prefer to use a schema markup generator to make the process easier. These tools help you build schema code by guiding you through a step-by-step form, then output clean and usable markup.

It is one of the most efficient ways to implement schema markup, especially when working on a tight schedule or maintaining multiple pages.

Popular schema markup generator tools you can use

Here are three of the most trusted and widely used generators I often recommend to clients:

  • Google’s structured data markup helper
    This beginner-friendly tool lets you highlight sections of your content visually. It then generates the matching schema code, which you can copy and paste into your HTML.
  • TechnicalSEO.com generator
    A more advanced option that gives SEO professionals and developers precise control over structured data. Useful for complex schema cases.

These tools are ideal for most websites, particularly those that publish articles, manage products, or promote services. They reduce the chances of syntax mistakes and help ensure the markup is current and aligned with Google’s latest standards.

How to validate your schema with a schema markup checker

After generating the code, it is important to verify that everything is working as expected. A schema markup checker allows to test whether the structured data is valid and qualifies for rich results in search.

Here are two free and reliable tools to do that:

  • Google rich results test
    It checks your code against Google’s eligibility criteria for enhanced search appearance. It will show you what is missing, what is valid, and what can be improved.
  • Schema.org validator
    Useful when you want to confirm the overall structure and syntax of your JSON-LD without focusing only on Google-specific requirements.

If you are in the process of reviewing the website’s optimization stack or researching the best on-page SEO tools for your workflow, make sure these validators are part of your routine.

Testing is not optional; it is the final step that confirms whether the structured data is actually helping or holding the website back.