What is a schema.org validator?

A schema.org validator checks whether a website's structured data markup follows schema.org specifications correctly. It verifies JSON-LD, Microdata, and RDFa markup to ensure search engines like Google can read and use the data for rich results.

What is JSON-LD and why does it matter for SEO?

JSON-LD (JavaScript Object Notation for Linked Data) is Google's preferred format for structured data markup. It allows search engines to understand your content's context, enabling rich results like star ratings, FAQs, breadcrumbs, and product details in search results.

What schema types does SchemaScan validate?

SchemaScan validates 10 high-impact schema types: Organization, WebSite with SearchAction, BreadcrumbList, Article/BlogPosting, FAQPage, Product, AggregateRating/Review, Person/Author, HowTo, and JSON-LD syntax validity.

Is SchemaScan free to use?

Yes, SchemaScan is completely free to use with no account or login required. Simply paste any public URL to get an instant schema audit score and structured data report.

How do I fix schema.org errors on my website?

After scanning your URL, SchemaScan identifies missing or broken schema types and provides plain-English fix instructions for each issue. Enter your email address to receive a detailed fix-it report with specific recommendations for your site.

Rich Results

HowTo Schema Markup

Generate HowTo JSON-LD for step-by-step guide rich results — Google displays numbered steps directly in search for eligible how-to content.

Rich result type

Step-by-step rich results

Google documentation →

Validate your HowTo schema

Enter your URL to check if your HowTo markup is correct and eligible for rich results.

Required fields

name
step[].name
step[].text

Recommended fields

totalTime
estimatedCost
image
tool
supply

Common HowTo schema errors

✗step.text is empty or duplicates step.name
✗totalTime not in ISO 8601 duration format (PT30M)
✗Missing image on steps for image-rich results
✗Using HowTo for non-instructional content

Generate HowTo schema

Fill in the fields below to generate valid JSON-LD you can paste directly into your page.

Guide title*

Description

Total time (e.g. PT30M)

Step 1 name*

Step 1 instructions*

Step 2 name

Step 2 instructions

Step 3 name

Step 3 instructions

Step 4 name (optional)

Step 4 instructions (optional)

HowTo schema — frequently asked questions

What content qualifies for HowTo rich results?

Only pages that describe how to complete a task step-by-step qualify. Recipe, tutorial, repair guides, and DIY content are ideal. Marketing or promotional content will not be eligible.

How do I format totalTime?

Use ISO 8601 duration format: PT30M for 30 minutes, PT1H for 1 hour, PT1H30M for 1 hour 30 minutes.

Can I use HowTo with Recipe schema?

No — use Recipe schema for cooking content instead, which has its own rich result type with better visibility in search.

Other schema types

E-commerceProductProduct snippets, Google Shopping ContentArticleTop Stories, Article rich results Rich ResultsFAQPageFAQ dropdowns in SERP BrandingOrganizationKnowledge Panel, logo in search Local SEOLocalBusinessLocal Knowledge Panel, Google Maps NavigationBreadcrumbListBreadcrumb trails in SERP

Audit your full schema coverage

SchemaScan checks all schema types at once — get a complete score and fix-it report for any URL.

Run free audit →