Schema markup checker: test your structured data online
Short answer: a schema markup checker reads the structured data on a page and shows whether it is valid, which types it uses and what is missing. Test your code with Google’s Rich Results Test and the free Schema Markup Validator, then run a $2 Ranklyst audit to find where markup is missing across up to 12 pages.
- Up to 12 pages
- SEO, AEO and GEO scores
- $2 one time
- No signup needed
- Find pages that have no structured data at all
- Check Organization markup, profile links and FAQ markup across up to 12 pages
- Get a prioritized fix list with effort and impact
$2 one-time payment. No account needed. Your report is ready in a few minutes and sent to your email.
What is a schema markup checker?
A schema markup checker reads the structured data on a web page and reports what it finds. It shows which schema types the page uses, flags errors and warnings, and points out what is missing. Some checkers test one URL, some scan a whole site, and some work as a browser extension.
Structured data is code, usually JSON-LD, that labels the facts on a page: who you are, what you sell, who wrote an article. Schema.org defines the shared vocabulary, so a schema.org checker is really a vocabulary check. Search engines and AI systems read these labels to understand a page without guessing. Ranklyst reviews this layer as part of its SEO audit and its AI visibility checker.
Reviewed by Fahad Ahmad. Last updated . Tool names and features change, so confirm details in each tool’s own documentation.
What is the difference between a schema markup checker, validator and tester?
People use the three words interchangeably, but the jobs differ. A validator checks your code against the schema.org vocabulary. A tester checks whether a page can earn Google rich results. A checker looks at where markup exists across your pages. A check-up repeats that review on a schedule.
| Term | The question it answers | Typical tool |
|---|---|---|
| Validator | Is my code valid against the schema.org vocabulary? | Schema Markup Validator (validator.schema.org) |
| Tester | Can this page earn Google rich results? | Google Rich Results Test |
| Checker | Where is markup present or missing across my pages? | Search Console reports, site audits and Ranklyst |
| Check-up | Is everything still correct after my changes? | A repeat of the steps above on a schedule |
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Four questions every schema markup test should answer
A complete schema markup test asks whether the code parses, whether it is valid schema.org, whether Google can use it, and whether it is true. Most people stop after the first two.
What is the best free schema markup checker?
Use two free tools together. Google’s Rich Results Test shows whether a page can earn Google rich results, and the Schema Markup Validator checks your code against schema.org. Add Google Search Console to watch your whole site. No single free schema markup checker covers all three jobs.
| Tool | Cost | Best for | What it leaves out |
|---|---|---|---|
| Google Rich Results Test | Free | Checking whether a page or a pasted code snippet can earn Google rich results | Covers only types that Google supports and tests one page at a time |
| Schema Markup Validator | Free | Checking code against the full schema.org vocabulary | Says nothing about whether Google will accept the markup |
| Google Search Console | Free | Seeing markup problems across your whole site after Google crawls it | Cannot test a page before you publish, and needs a verified site |
| Browser extensions | Free or paid | Inspecting the markup on any page quickly, including competitors’ pages | Validation depth varies from one extension to the next |
| Ranklyst | $2 per audit | Finding where markup is missing across up to 12 key pages, inside a ranked SEO, AEO and GEO audit | Not a code validator, and does not test Google rich result eligibility |
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Is there a schema markup validator from Google?
Not one single tool. Google retired its old Structured Data Testing Tool and split the job in two. The Rich Results Test checks whether a page is eligible for Google rich results, and the Schema Markup Validator, now at validator.schema.org, checks general schema.org syntax. Search Console adds site-wide reports.
Is a schema markup checker extension worth using?
It is useful for one job: inspecting the markup on any page quickly, including a competitor’s. A browser extension reads the page after scripts run, so it can show markup that your raw HTML source lacks. Validation depth varies, so confirm important pages with Google’s and schema.org’s tools.
Why do schema markup test results differ between tools?
Tools test different things and read different versions of the page. The Rich Results Test applies Google’s rules and renders the page like Googlebot. The Schema Markup Validator applies schema.org’s general vocabulary. An extension reads the live page in your browser. Compare results by type, not by pass or fail.
A practical habit: when a result surprises you, view the page source and the rendered page side by side. Markup that a script adds after the page loads can look missing in one view and present in the other.
How do I check schema markup online?
Paste your page URL, or the code itself, into Google’s Rich Results Test and the Schema Markup Validator. Read the errors first, then the warnings, fix the code and test again. Then compare the markup with what visitors see on the page, because a tool cannot judge that fully.
- 1
Pick the pages that carry the most value
Start with one page of each type: your home page, a top article, and a product or service page. Templates repeat, so one good sample per template shows you most problems.
- 2
Run each page through the Rich Results Test
Paste the URL into Google’s Rich Results Test. Note which items it detects, and read every error and warning. This shows what Google can use.
- 3
Run the same page through the Schema Markup Validator
Paste the same URL into the Schema Markup Validator. It checks your code against schema.org and catches vocabulary mistakes that Google’s tool may skip.
- 4
Fix errors first, then useful warnings
Errors block features, so fix them first. Add a recommended property only when you have the real data to put in it. Never invent a value to silence a warning.
- 5
Compare the markup with the visible page
Check that every name, price, date and answer in the markup also appears on the page. This is the check that tools cannot finish for you.
- 6
Test again and ask Google to recrawl
Re-run both tools after your fix. Then open the URL Inspection tool in Google Search Console and request a recrawl of the page.
- 7
Watch Search Console and repeat each quarter
Search Console’s rich result reports show markup problems across your site after Google crawls it. Repeat this process every quarter and after every redesign.
What is the difference between errors and warnings in a schema markup test?
Errors block a feature, and warnings do not. An error usually means a required property is missing or a value has the wrong format, and the page will not qualify for that rich result until you fix it. A warning means a recommended property is missing. Fix errors first, then add warnings only when you have the real data.
| What you see | What it means | What to do |
|---|---|---|
| Missing field (required) | A property that the feature needs is absent | Add the property with real data. The page cannot qualify until you do. |
| Missing field (recommended or optional) | The markup works, but one useful property is missing | Add it only if you have the real value. |
| Parsing error or invalid JSON | The code is broken, often by a trailing comma, a curly quote or an unescaped quote | Paste the block into a JSON linter, fix it, and test again. |
| Invalid value type or invalid URL | A value has the wrong format, such as a relative URL or a text value where an object belongs | Use absolute URLs and follow the property’s expected type. |
| Item detected but not eligible | The type is valid, but Google does not use it for a rich result | Keep it if it describes your content, but expect no visual change. |
| No items detected | The page has no markup, a script failed to add it, or the page was not reachable | Check the rendered page, then check that the page is not blocked or marked noindex. |
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If my schema markup is valid, will Google show a rich result?
No. Valid markup makes a page eligible, not guaranteed. Google decides whether to show a rich result based on quality, relevance and its own policies. Google has also cut back some types, such as FAQ and HowTo, so valid markup of those types may show no visible change.
Which schema types does a typical website need?
Most sites need Organization, WebSite and BreadcrumbList. Add Article for blog posts, Product and Offer for shop pages, LocalBusiness for local firms and SoftwareApplication for software. Use only the types that describe real content on the page. More markup is not better markup.
| Kind of site or page | Types to consider |
|---|---|
| Every website | Organization, WebSite, BreadcrumbList |
| Blogs and publishers | Article or BlogPosting, with author and dates |
| Software and SaaS | SoftwareApplication, with an Offer for pricing |
| Online shops | Product and Offer, with only real prices and availability |
| Local businesses | LocalBusiness, with address, hours and phone |
| Pages with real questions | FAQPage, where visitors can see the questions |
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Do FAQ and HowTo schema still help?
Not for rich results on most sites. Google now shows FAQ rich results for only a small set of sites and has stopped showing HowTo rich results. Valid FAQ and HowTo markup still describes your content clearly to machines and costs little. Add it when it matches visible content, and do not expect a visual boost.
Does schema markup have to match the visible page?
Yes. Structured data must describe content that visitors can see on the page. Marking up prices, ratings or answers that do not appear on the page can lead Google to ignore your markup or take action against it. When you change the page, change the markup in the same release.
Does schema markup help AI search and answer engines?
It can help, but nobody can promise it. Structured data states facts such as your name, logo, products and questions in a format machines read without guessing. That supports AI recognition and clear answers. Treat it as one signal alongside crawler access, clear pages and trustworthy content.
Each kind of markup supports a different layer. Organization markup and profile links help systems recognize your brand, which your GEO audit measures. FAQ markup supports clear question and answer pairs, which your AEO audit measures. Once your markup is in place, the AI mention checker shows whether assistants actually know and cite you.
Markup only helps when a crawler can read the page. If robots.txt or a firewall blocks the page, the markup on it is invisible. The AI crawler checker explains how to check access.
What does Ranklyst check for schema markup?
Ranklyst reviews up to 12 of your most important pages and checks whether structured data is present, whether Organization markup and profile links exist, and whether FAQ markup appears where it fits. The results feed your SEO, AEO and GEO scores, with a ranked fix list.
Is Ranklyst a schema markup validator?
No. Ranklyst does not test your code against schema.org or check Google rich result eligibility. Use Google’s Rich Results Test and the Schema Markup Validator for that. Use Ranklyst to find where markup is missing across your key pages and to see how it affects your scores.
How to run a schema markup check with Ranklyst
Enter your URL and email, and Ranklyst does the rest in a few minutes. No setup, no account and no technical knowledge required.
- 1
Enter your website and email
Paste your URL and the email where you want your report. There is no account to create.
- 2
Ranklyst reviews your key pages
Ranklyst reviews up to 12 of your most important pages and checks structured data, Organization markup, profile links and FAQ markup as part of about 30 measurable checks.
- 3
Read your report and fix the gaps
Receive your SEO, AEO and GEO scores, a prioritized fix list with effort and impact, a PDF and a share link, usually within a few minutes.
How often should I run a schema markup check-up?
Run a schema markup check-up every quarter and after any redesign, theme change, plugin update or migration. Templates change markup silently, and a broken block can sit unnoticed for months. Check your most important page types first: your home page, a top article and a product or service page.
- Your home page has Organization and WebSite markup
- Every page has BreadcrumbList markup where breadcrumbs show
- Articles carry author and date markup
- Product or service pages use the right type
- All JSON-LD blocks parse without errors
- Required properties are present for each type
- URLs in the markup are absolute
- Dates use the ISO 8601 format
- Every fact in the markup also appears on the page
- No page carries two conflicting Organization blocks
- Pages with markup are indexable and not blocked
- You re-test after every redesign or plugin update
Six schema markup mistakes that waste your time
These mistakes show up again and again, even on carefully built sites.
Four moments when a schema markup check pays off
A check is most useful when something has changed or when a rich result goes missing.
How much does a Ranklyst schema markup check cost?
A Ranklyst audit costs $2 per website, one time, with no subscription. The same report includes your SEO, AEO and GEO scores, an AI visibility test, a PDF report and a share link.
Ranklyst reads public pages only and follows your robots.txt file. About RanklystBot
Schema markup check: quick answers in Spanish and Roman Urdu
The same short answer in two more languages, for readers who search in them.
¿Cómo comprobar el marcado schema de mi sitio web?
Pega la URL de tu página, o el código, en la Prueba de resultados enriquecidos de Google y en el validador de marcado de Schema.org. Corrige primero los errores, luego las advertencias, y vuelve a probar. Ranklyst revisa hasta 12 páginas y señala dónde falta marcado estructurado por un pago único de $2.
Schema markup checker kya hai?
Schema markup checker aapke page par maujood structured data parhta hai aur batata hai ke kaunse schema types istemal hue hain, kahan errors ya warnings hain aur kya missing hai. Code test karne ke liye Google ka Rich Results Test aur Schema Markup Validator istemal karein. Ranklyst 12 pages tak dekhta hai ke structured data kahan missing hai, sirf $2 mein.
Find out where your pages are missing structured data
Test your code with Google’s free tools, then run your Ranklyst audit to see which key pages have no markup and what to fix first.
One-time payment · No account · Report in a few minutes