17 Best Schema Markup Testing Tools To Improve SEO Rankings

Brandon LazovicMay 18, 2020

Structured data is crucial for SEO to help search engine crawlers better understand what your page is about. 

While there are direct correlation studies that show using schema markup will result in an increase for your keyword rankings, structured data also helps make it easier to show what pages are relevant for certain search queries, or generate rich results to help improve clickthrough rates for your site. 

When adding structured data to your website, it’s important to test and ensure that the code is valid, otherwise Google will ignore your markup. 

Read on for a list of the top structured data testing tools that you should be using when testing your schema markup

Why Structured Data Is Important For SEO

Like I mentioned earlier, structured data allows search engine crawlers to better understand the content on your page, which can lead to improved rankings in the SERPs. 

If your pages can generate rich results, you’ll benefit by receiving more organic traffic coming through to your website, and occupying more digital real estate than your competitors. 

Testing Schema Markup

Structured data testing is done through the use of a data testing tool. 

These types of tools can provide insights into whether a page’s data is visible to search engines, any errors regarding the format of the structured data, or more info regarding any other issues with your structured data implementation. 

What can happen if you have schema markup errors

Having just one error will cause Google to ignore your markup. However, if you see warnings about missing a recommended field, Google may still use your structured data when creating rich results. 

It’s important to be aware of any warnings/errors that are associated with your structured data; Google will change its requirements for schema, and a warning that’s recommended may become a requirement for a rich result as time passes. 

If your site is riddled with schema markup errors, you may even receive a manual penalty for improper implementation. 

Looking to learn more about search engine optimization? Read our SEO beginner’s guide for everything you need to know about SEO and how to drive business results through search engines like Google and Bing. 

Best Schema Tester Tools

Below are the top schema tester tools that are available for testing structured data: 

Google’s Structured Data Testing Tool

Google offers this free structured data testing tool to test your structured data. Simply paste your live URL, or code snippet, that you want to check for errors. 

This tool allows you to validate JSON-LD, RDFa and Microdata Formats, and is my preferred tool for testing schema markup. It will easily outline any warnings or errors associated with your implementation so that you can fix it. 

Google Search Console’s Structured Data Report

In addition to the structured data testing tool, Google offers its own structured data reports within Google Search Console that will provide a complete overview for your site’s markup. 

This report will show you the exact number of structured data items that your site is recognized for, as well as show any warnings or errors that are preventing your URLs from generating rich results. 

Google Rich Results Testing Tool

This is another great tool by Google to validate your schema markup. While this tool isn’t as eye-friendly for parsing through warnings/errors, it will show you what your rich result would look like (provided your associated markup is eligible for rich results). 

It’s useful for seeing what your rich results will look like, and editing the content to improve the CTR for that particular rich result. 

Merkle’s Schema Markup Generator

Merkle’s Schema Markup Generator allows you to create schema markup in JSON-LD format for applications such as article, event, FAQPage, HowTo, and other types of structured data markup. 

This tool automatically generates ready-to-implement code by prompting users to add information to autofills within the tool. Once the required information is added, it lets users export that code directly to Google’s Structured Data Testing Tool for validation. 

One of the schemas that you should take advantage of is the FAQPage schema within this tool. Check out my latest guide on how to write FAQ schema markup for your website.

Yandex Structured Data Validator

While it’s less beginner-friendly than Google, the Yandex Structured Data Validator allows you to see how the microformat parser looks at your designated web page. Simply enter your webpage URL or HTML to review the results. 

This tool will also show any outstanding errors for your structured data. 

Chrome Extension - Structured Data Testing Tool

If Chrome is your preferred internet browser, you can use this extension to check all formats and validate markup. This tool will show any warnings or errors associated with your target webpage. 

It can also access websites in a staging or development environment, as well as password protected pages, which is something that the Structured Data Testing Tool can’t do. 

SEO SiteCheckup

While SEO SiteCheckup offers more than a dozen SEO tools, ranging from 301 redirects, page speeds, and broken links, it also contains a structured data testing tool that checks for compliance with HTML requirements. 

Bing Markup Validator

Similar to Google Search Console, this tool is accessible via Bing Webmaster Tools. Simply click on “Diagnosing and Tools” to validate different structured data types, including OpenGraph, JSON-LD, or RDFa. 

Google Email Markup Tester

Interestingly enough, the Google email markup tester allows users to extract structured data from email documents. 

All you need to do to use this tool is paste the markup code within the email tester and validate to display the structured data and any error messages associated with it. 

RDF Translator

If you’re looking to validate XML, N3, or N-Triples structured data formats, then RDF translator is a great option for you. It can be used to validate limited types of schema, although it isn’t as useful as the other tools listed above. 

JSON-LD Playground

With JSON-LD being the preferred data type for Google when implementing structured data on your website, the JSON-LD Playground tool is a good tool for performing a comprehensive analysis of your schema markup and providing a detailed report. 

Structured Data Linter

This tool is useful for returning a snippet visualization for the structured data URL, code, or file that you upload to Structured Data Linter. While it doesn’t support microformats, it’s a decent tool for verifying existing structured data on your target web pages and viewing enhanced rich results. 

Microdata Tool

This tool is a jQuery drop-in script that you can use for your website as a HTML5 microdata validator. 

Schema - All In One Schema Rich Snippets (WordPress Plugin)

One of the best WordPress plugins available for rich results, the Schema - All In One Schema Rich Snippets plugin is great for adding a wide variety of schema markup types directly to your website. The only prerequisite is that you have to have a WordPress CMS to use this plugin. 

SNIP WordPress Plugin

This is another schema markup testing tool that comes in the form of a plugin. While it doesn’t offer anything new compared to the other tools listed, it comes with a wide range of instructional videos that allow you to produce any structured data that is needed for your web pages. 


Structured data can be very time consuming, which makes this smart AI-based plugin useful because it adds structured data to your web pages automatically, whether you’re making WordPress pages, posts or WooCommerce products. 


The last tool on this list is Yoast SEO; widely considered one of the best SEO plugins for WordPress, it ensures that you’re using structured data markup properly and offers a variety of schema options that you can directly add to your web pages, ranging from FAQPage, HowTo, Article, breadcrumb and more. 


Like I mentioned earlier, adding structured data to your website is a great way to generate rich results and ensure that you have a leg up on your competitors in the search results. 

However, if implemented incorrectly, not only will you not show up for any rich results in the SERPs, but you may even be manually penalized if large portions of your website are marked up incorrectly. 

Hopefully you found this list of structured data testing tools to be helpful; be sure to check out my SEO resource hub for more content. 

Related Resources: 

Frequently Asked Questions: 

What is the use of structured data testing tool?

Google Structured Data Testing Tool allows you to develop, test, and modify your structured markup. You can add your schema markup code into the tool or provide a URL to check for warnings or errors with your markup.

What is schema testing?

Schema testing involves validating the objects of front-end application with database object mapping. 

How do I test a schema?

Google's Structured Data Testing Tool is the best way to test schema. Simply input your URL and run your test; this will show all of your schema markup and any warnings/errors associated with it on the right side of the screen.

What is a rich snippet?

Structured data allows search engines to better understand what information is contained on your web page. This will generate rich snippets directly onto search engines, or an enhanced version of a search result for users to view and click on.

17+ Best Schema Markup Testing Tools To Improve SEO Rankings In 2021
17+ Best Schema Markup Testing Tools To Improve SEO Rankings In 2021

Wondering how to test your schema markup to improve SEO keyword rankings? Check out the best 17 schema markup testing tools that you should be using.

Digital Marketing
Social Media
Digital PR
Tool Reviews
Local SEO                                                          

Sitemap           Privacy            Editorial Guidelines
Copyright © 2021 Brandon Lazovic LLC. All rights reserved.
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram