Schema Markup Validator review (2026): is it any good?
Free schema.org checker for any structured data on a page or snippet
Schema Markup Validator report card
Good · out of 4.0 · graded Oct 23, 2026
Best for checking schema.org markup is well formed
The Schema Markup Validator checks the structured data on a page or in a pasted snippet against every schema.org type, for free and with no account. But it won't tell you whether a page qualifies for Google rich results, it tests one URL or snippet per run with no crawl or saved history, and a community project runs it, not a company offering support.
Who Schema Markup Validator is for
- Fits if you're a developer checking that schema.org markup is well formed
- Works for sites using structured data for engines and apps other than Google
Who Schema Markup Validator is not for
- Skip it if you want to know about Google rich results, which need Google's Rich Results Test
- Too light for a whole site, as it checks one URL or snippet per run
- Not for you if you want saved history or scheduled checks, as the page offers neither
- Watch out: it's hosted by the schema.org community project, not a company selling support
Why Schema Markup Validator gets a 2.8
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for moneyFree, from the schema.org project, with URL fetches and snippet tests. Nothing to buy.
- AFree plan and trialOpen to anyone in a browser with no account and no limits on record.
- DFeaturesOne narrow job: checking syntax and schema.org compliance for any type, from a URL or a snippet. No rich result checks, no site crawl, no scheduling and no saved history.
- BEase of useNo rating on record, and nothing to set up: enter a URL or paste code and run the test. The interface switches between dozens of languages.
- CPlatforms and integrationsWeb only, with no API or integrations on record.
What these grades rest on. Graded from this listing, whose facts were read from schema.org's own pages on 23 October 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/schema-markup-validator#review"><img src="https://toolgpa.com/badge/schema-markup-validator.svg" alt="Schema Markup Validator: 2.8 GPA on ToolGPA" width="196" height="56"></a>Where Schema Markup Validator stands among technical SEO tools
Schema Markup Validator's GPA of 2.8 is higher than 64 of the 83 other technical SEO tools we grade, and level with 8.
It stands best on free plan and trial (A, above 62 of 83) and worst on features (D, above 0).
Schema Markup Validator has no paid plan.
On features, ease of use and platforms it scores 2.0 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 84 technical SEO tools we grade, cut by the letter each got. Schema Markup Validator’s own letter is outlined.
- AValue for moneyAbove 54 of 83, level with 29
- AFree plan and trialAbove 62 of 83, level with 21
- DFeaturesAbove 0 of 83, level with 9
- BEase of useAbove 62 of 83, level with 21
- CPlatforms and integrationsAbove 3 of 83, level with 23
Price against what you get
Each dot is one of 73 technical SEO tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Schema Markup Validator, or make your own?
Keep it
Schema Markup Validator is free, so making your own would save you nothing.
It is one of the better ones too: its GPA of 2.8 is higher than 64 of the 83 other technical SEO tools we grade.
What you could make
- Schema markup: an app builder makes this well.
What you could not
- A crawler that checks every page of a site.
What this rests on. Schema Markup Validator’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Schema Markup Validator?
The Schema Markup Validator is a free tool from the schema.org project that checks the structured data embedded in a web page, or in a pasted code snippet, against the schema.org vocabulary. It replaced Google's old Structured Data Testing Tool, which moved to the schema.org community by April 2021, and it validates all schema.org types without checking for Google's rich results.
Worth knowing
- Does not tell you whether a page qualifies for Google rich results; Google's Rich Results Test does that.
- Tests one URL or one snippet per run; the page offers no site crawl, scheduling or saved history.
- Hosted by the schema.org project, a community effort founded by Google, Microsoft, Yahoo and Yandex, not a company selling support.
Key features
- Fetch a URL
- Enter a page address and the validator fetches the page and checks the structured data embedded in it.
- Test a code snippet
- Paste markup into the editor to check it before it is published, and rerun the test after each change.
- Any schema.org type
- Checks syntax and compliance with schema.org standards for every type in the vocabulary, not only the ones Google uses for rich results.
- No Google-specific warnings
- Google describes it as validating schema.org data without Google feature-specific warnings, which its Rich Results Test covers instead.
- Interface in many languages
- The validator's interface can be switched between dozens of languages, including Japanese, German, Hindi, Arabic and Spanish.
Schema Markup Validator pricing
As of Oct 23, 2026, Schema Markup Validator is free to use.
- Starts at
- Free
- Free plan
- Open to anyone in a browser with no account: fetch a URL or paste a code snippet and run the test.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | Validates schema.org markup from a fetched URL or a pasted code snippet, with the interface in several languages. |
Read from validator.schema.org on Oct 23, 2026. Prices change, so confirm with Schema Markup Validator before you buy.
Schema Markup Validator alternatives
Common questions
Does Schema Markup Validator have an Android app?
No Android app was listed when its pages were read on Oct 23, 2026. Schema Markup Validator is listed for Web.
Does Schema Markup Validator have an iPhone app?
No iPhone app was listed when its pages were read on Oct 23, 2026. Schema Markup Validator is listed for Web.
Is Schema Markup Validator open source?
Schema Markup Validator is not described as open source on its own site, as read on Oct 23, 2026.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 23, 2026.