Free SEO tool · Search appearance
Schema Markup Validator (JSON-LD)
Read the JSON-LD on a page, or code you paste: is it valid JSON, does it use schema.org, and does each type have the properties Google requires for rich results?
- PASS ProductHas the properties Google requires
- NOTE ProductCould add: brand, review
- WARNING Block 2No schema.org @context
- ISSUE Block 3Not valid JSON — a trailing comma
What does the free Schema / JSON-LD Validator analyze?
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1
Valid JSON
Each JSON-LD block must parse; one stray comma breaks the whole block.
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2
schema.org context
Every block should declare @context so search engines know the vocabulary.
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3
Required properties
For common types such as Product, Article, FAQPage and Organization, the properties Google requires.
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4
Recommended properties
What each type could add to be more complete.
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5
Nested items
Offers, ratings, reviews and list items are checked inside their parents.
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6
Other formats
Microdata and RDFa are counted and noted; this tool validates JSON-LD.
How to add structured data that works
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1
Use JSON-LD
One script block in the page, easy to read and to change.
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2
Describe what is visible
Mark up only what people can see on the page.
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3
Fill the required properties
Then add the recommended ones that apply.
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4
Confirm eligibility with Google
Its Rich Results Test decides whether a page can get a rich result.
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5
Check the page itself too
Titles and tags matter as much as markup. SEO Checker →
How to interpret your results
- ISSUE
- A clear fault that usually deserves a fix, e.g. a missing title or a non-200 status.
- WARNING
- May be a problem depending on the page, e.g. a missing description or canonical, or a long title.
- PASS
- Checked and looks fine.
- NOT CHECKED
- Not part of this check, or blocked by the site. The report says which — it is never counted as a fault.
Schema / JSON-LD Validator vs Website Audit vs SEO Monitor
Schema / JSON-LD Validator
One URL · free · no account
Read the JSON-LD on a page or a pasted snippet and check the common required properties.
You’re hereWebsite Audit
Many pages · free quick crawl
Crawls a limited set of pages and groups issues across your site, like duplicate titles and potential orphan pages.
Run a website audit →SEO Monitor
Connected data · account
Uses your Search Console and GA4 to track clicks, queries and changes over time.
Explore SEO Monitor →FAQ
Frequently asked questions
About the Schema / JSON-LD Validator.
01
Is this Google’s Rich Results Test?
No. We parse the JSON-LD and check common required properties; Google’s own test decides rich result eligibility.
02
Can I check code before publishing?
Yes. Paste the JSON-LD into the field instead of a URL.
03
Does structured data improve rankings?
Not directly. It can make a page eligible for rich results, which can earn more clicks.
04
JSON-LD, Microdata or RDFa?
Google supports all three and recommends JSON-LD, which is the easiest to maintain.
05
Why is a property only recommended?
Google needs the required ones; recommended ones make the result richer but aren’t mandatory.
06
Is it free?
Yes. No account is needed. We limit how often one visitor can run checks so the tools stay fast for everyone.
