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The Schema Markup Validator Insider’s Guide

Everything we know about Schema Markup Validator in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.

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ToolGPAOctober 2026

Schema Markup Validator

The Insider’s Guide

Free schema.org checker for any structured data on a page or snippet

Every plan, grade, refund rule and rival among technical SEO tools, read from Schema Markup Validator’s own pages.

Made by Schema.org · checked Oct 23, 2026 · toolgpa.com

2.8GPA

Contents

  1. 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
  2. 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
  3. 03What it doesIts main features, where it runs, what it works with and who makes it
  4. 04Where it standsIts grades against its category, and whether to keep it or make your own
  5. 05The alternativesThe tools it is most often weighed against, side by side
  6. 06Quick answersThe questions people ask about it, each answered in a line or two
  7. 07About ToolGPAWho made this guide, what else is on the site, and how to cite it

ToolGPA put this guide together from Schema Markup Validator’s own pages, its app-store listings and our grades. Every fact in it is on Schema Markup Validator’s page too, where it is kept up to date. Checked Oct 23, 2026.

Part 01 · Overview

Welcome

What it is, who it suits, its grades and the ten things to know first

2.8

GPA, above 64 of the 83 other technical SEO tools we grade

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.

To get you started, here are 8 things to know about Schema Markup Validator, taken from its own pages and our grades.

No rating on record, and nothing to set up: enter a URL or paste code and run the test.
From our grade for ease of use
  1. 1

    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.

  2. 2

    It is free

    Schema Markup Validator has no paid plan at all. Open to anyone in a browser with no account: fetch a URL or paste a code snippet and run the test.

  3. 3

    It runs on Web

    Web.

  4. 4

    Fetch a URL

    Enter a page address and the validator fetches the page and checks the structured data embedded in it.

  5. 5

    Test a code snippet

    Paste markup into the editor to check it before it is published, and rerun the test after each change.

  6. 6

    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.

  7. 7

    A 2.8 GPA, above 64 of 83

    That is against the other technical SEO tools we grade, on value, the free plan, features, ease of use and platforms.

  8. 8

    Keep it

    Schema Markup Validator is free, so making your own would save you nothing.

Schema Markup Validator at a glance

Pricing
Free
Free plan
Yes
Free trial
None stated
Runs on
Web
Made by
Schema.org
Category
Technical SEO & Site Audits
Our grade
2.8 GPA, good

The report card

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.

ToolGPA report cardSchema Markup ValidatorGraded Oct 23, 2026
SubjectGradeComment
Value for moneyAFree, from the schema.org project, with URL fetches and snippet tests. Nothing to buy.
Free plan and trialAOpen to anyone in a browser with no account and no limits on record.
FeaturesDOne 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.
Ease of useBNo 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.
Platforms and integrationsCWeb only, with no API or integrations on record.
Grade point averageGood, out of 4.02.8

An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.

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 it 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

Good to know

Good for

  • Developers checking that schema.org markup is well formed
  • Sites using structured data for engines and apps other than Google
  • Anyone who used Google's retired Structured Data Testing Tool

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.

Part 02 · Pricing

What it costs

Every plan, the free plan, ways to pay less and how prices have moved

Free

No paid plan at all

Schema Markup Validator is free to use.

Free, from the schema.org project, with URL fetches and snippet tests.
From our grade for value for money

  • Free

    $0

    Validates schema.org markup from a fetched URL or a pasted code snippet, with the interface in several languages.

The free plan

Open to anyone in a browser with no account: fetch a URL or paste a code snippet and run the test.

Read from validator.schema.org on Oct 23, 2026.

Part 03 · Features

What it does

Its main features, where it runs, what it works with and who makes it

1

Place it runs: Web

Free schema.org checker for any structured data on a page or snippet. Here is what it does, as its own site describes it, and what it covers: site audit, schema markup.

One narrow job: checking syntax and schema.org compliance for any type, from a URL or a snippet.
From our grade for 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.

Where it runs

  • Web

What it works with

Its own pages name no integrations.

Schema Markup Validator is made by Schema.org.

Part 04 · Standing

Where it stands

Its grades against its category, and whether to keep it or make your own

64/83

Other technical SEO tools it is graded above

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
  • AFree plan and trialAbove 62 of 83
  • DFeaturesAbove 0 of 83
  • BEase of useAbove 62 of 83
  • CPlatforms and integrationsAbove 3 of 83

Price against what you get

Each dot is one of 73 technical SEO tools. Further left costs less; higher up scores better on features, ease of use and platforms. Schema Markup Validator is the marked dot.

D1.0C2.0B3.0A4.0Free$2$5$20$50$200$500$2k$5kMore for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessSchema Markup Validat…Yellow Lab ToolsLighthouseGoogle Search Console

What paid plans start at, a month (each step along is roughly double) →

Keep it, or make your own?

Whether this is something you could build for yourself with an AI app builder, and what you would give up.

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.

Part 05 · Alternatives

The alternatives

The tools it is most often weighed against, side by side

Google Rich Results Test, Schema App, Schemantra, Schema.dev and Google Search Console

The 5 tools Schema Markup Validator is most often weighed against, with where each one differs from it.

Part 06 · Questions

Quick answers

The questions people ask about it, each answered in a line or two

11

Questions, each answered in a line or two

The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.

Is Schema Markup Validator free?

Yes. Schema Markup Validator is free to use.

How much does Schema Markup Validator cost?

Schema Markup Validator lists one plan. Free: $0.

What platforms does Schema Markup Validator work on?

Schema Markup Validator is available on Web.

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.

Who makes Schema Markup Validator?

Schema Markup Validator is made by Schema.org.

What are the alternatives to Schema Markup Validator?

The closest alternatives to Schema Markup Validator in our directory are Google Rich Results Test, Schema App, Schemantra, Schema.dev and Google Search Console.

How does Schema Markup Validator compare with other 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.

Is Schema Markup Validator good value for money?

ToolGPA grades Schema Markup Validator A for value for money. Schema Markup Validator has no paid plan.

Could I make my own version of Schema Markup Validator?

Schema Markup Validator is free, so making your own would save you nothing.

Where this guide comes from

The prices, plans, platforms and features were read from Schema Markup Validator’s own pages on Oct 23, 2026, and the grades were given on Oct 23, 2026. 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.

Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Schema.org. Prices change, so check validator.schema.org before you buy.

Part 07 · About

About ToolGPA

Who made this guide, what else is on the site, and how to cite it

3,189

Tools graded, in 94 categories

ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.

Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.

  • 3,189

    tools graded

  • 94

    categories

  • 426

    price changes on record

  • 579

    apps priced in 12 countries

What else is on toolgpa.com

Scan for the live page

Prices and grades as they are today

Quoting this guide?

Please name ToolGPA and link to the live page, so readers can check the figures for themselves:

ToolGPA, "Schema Markup Validator: The Insider's Guide", checked Oct 23, 2026. https://toolgpa.com/tools/schema-markup-validator

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See our other guides

The best-graded technical SEO tools after Schema Markup Validator, each with an Insider's Guide of its own.

ToolGPA

Choosing software? Every tool graded, every price dated.

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Everything in this guide is ToolGPA’s own summary of what Schema Markup Validator’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Schema Markup Validator is a trademark of its owner, and this guide is not made, paid for or approved by Schema.org. Prices and plans change: check validator.schema.org before you buy.