What's the difference between this and Google's Rich Results Test?

This Vinespire tool checks JSON-LD syntax and schema.org structural completeness instantly in your browser — nothing is sent to a server. Google’s Rich Results Test additionally evaluates whether a live URL qualifies for specific Google rich results under current policies (for example, FAQ rich results are limited to certain site types). Use this validator for fast private iteration while building or editing markup; use Google’s tool for final pre-publish confirmation on the real page.

Why does my valid-looking JSON-LD show an error here?

Common causes: missing required properties for that @type (for example Organization needs name, url, and logo per Vinespire’s shared definitions), invalid URLs, empty string values, or JSON syntax issues such as trailing commas copied from a JavaScript file. Expand each failed rule for what is wrong and why it matters. If the markup came from a generator or CMS plugin, re-check the source fields rather than only patching JSON by hand.

Does this tool check if my structured data will actually show a rich result?

No. Eligibility for Google rich results depends on content type, page quality, crawl access, and Google’s current policies — not syntax alone. This tool confirms structural correctness and common mistakes. Always finish with Google’s Rich Results Test (or equivalent Search Console reports) before treating markup as production-ready.

Can I validate multiple schema blocks at once?

Yes. Paste several ` ` tags, a full page source that contains them, or a single object with `@graph`. Each block or graph node is validated independently and shown as its own result card. Duplicate @type warnings appear when two blocks declare the same type (for example two Organization nodes).

What does "@graph" mean and why does my CMS generate it?

@graph is a JSON-LD pattern that packages multiple entities in one script tag — often Organization + WebSite + WebPage. CMSs and SEO plugins use it to keep related nodes together with a shared @context. This validator expands @graph and checks each entity separately so one bad node does not hide issues in another.

My @type isn't recognized — does that mean it's wrong?

Not necessarily. Deep required-field checks cover Organization, FAQPage, Product, LocalBusiness (and common subtypes), and BreadcrumbList — the same types as Vinespire’s generators. A curated list of other types (Article, Event, Review, Recipe, VideoObject, HowTo, WebSite, Person, and a few variants) gets light-touch checks. Unrecognized types still receive syntax, @context, and common-mistake checks; we show a neutral note rather than failing solely for unknown @type.

Is my data sent to Vinespire's servers when I paste it?

No. Validation runs entirely in your browser with pure client-side TypeScript. Nothing you paste is uploaded for analysis. That keeps sensitive draft markup private and matches Vinespire’s zero-infrastructure free-tools design.

What's the most common structured data mistake?

In practice: incomplete required properties (especially Organization without logo/url), nested objects missing their own @type (address without PostalAddress), sameAs as a bare string instead of an array, and invalid or empty URLs. Accidental duplicate Organization blocks on one page are also frequent after theme or plugin stack-ups.

Do I need @context on every JSON-LD block?

Yes for standalone script tags — each block should include `@context`: `https://schema.org` (or an array/object containing schema.org). Nodes inside an @graph may inherit context from the parent graph object; this tool treats graph children carefully and still flags missing context when the node stands alone without an inherited context.

Why do I have two Organization schema blocks on one page — is that a problem?

It can be. Multiple Organization nodes sometimes appear when a theme and a plugin both inject brand schema. Consumers may merge or pick inconsistently. Prefer one canonical Organization (or clear multi-entity design with distinct @id values). This validator flags duplicate @type when you paste multiple blocks so you can clean accidental copies.

How is this different from the schema generators’ “Validate this” panel?

Each Vinespire schema generator includes a lightweight self-check on the JSON it just built from the form. This Structured Data Validator is the general-purpose counterpart: paste any JSON-LD — hand-written, CMS-exported, inherited, or from another tool — and run the same shared field definitions for known types plus multi-block and common-mistake analysis.

Can I fix broken Organization (or other) markup without editing JSON by hand?

Yes. When a known type fails, result cards link to the matching Vinespire generator (Organization, FAQ, Product, LocalBusiness, or Breadcrumb). Rebuild from fields, copy a fresh script tag, then re-paste here to confirm. Generators and this validator share one field-definition source so create and verify do not drift.

Is this structured data validator free?

Yes. Paste, check, expand every rule, and use generator fix links with no signup and no credit card. Optional paid Vinespire products measure multi-source AI visibility; they are not required to validate JSON-LD structure.

What's the difference between this and Google's Rich Results Test?

This Vinespire tool checks JSON-LD syntax and schema.org structural completeness instantly in your browser — nothing is sent to a server. Google’s Rich Results Test additionally evaluates whether a live URL qualifies for specific Google rich results under current policies (for example, FAQ rich results are limited to certain site types). Use this validator for fast private iteration while building or editing markup; use Google’s tool for final pre-publish confirmation on the real page.

Why does my valid-looking JSON-LD show an error here?

Common causes: missing required properties for that @type (for example Organization needs name, url, and logo per Vinespire’s shared definitions), invalid URLs, empty string values, or JSON syntax issues such as trailing commas copied from a JavaScript file. Expand each failed rule for what is wrong and why it matters. If the markup came from a generator or CMS plugin, re-check the source fields rather than only patching JSON by hand.

Does this tool check if my structured data will actually show a rich result?

No. Eligibility for Google rich results depends on content type, page quality, crawl access, and Google’s current policies — not syntax alone. This tool confirms structural correctness and common mistakes. Always finish with Google’s Rich Results Test (or equivalent Search Console reports) before treating markup as production-ready.

Can I validate multiple schema blocks at once?

Yes. Paste several ` ` tags, a full page source that contains them, or a single object with `@graph`. Each block or graph node is validated independently and shown as its own result card. Duplicate @type warnings appear when two blocks declare the same type (for example two Organization nodes).

What does "@graph" mean and why does my CMS generate it?

@graph is a JSON-LD pattern that packages multiple entities in one script tag — often Organization + WebSite + WebPage. CMSs and SEO plugins use it to keep related nodes together with a shared @context. This validator expands @graph and checks each entity separately so one bad node does not hide issues in another.

My @type isn't recognized — does that mean it's wrong?

Not necessarily. Deep required-field checks cover Organization, FAQPage, Product, LocalBusiness (and common subtypes), and BreadcrumbList — the same types as Vinespire’s generators. A curated list of other types (Article, Event, Review, Recipe, VideoObject, HowTo, WebSite, Person, and a few variants) gets light-touch checks. Unrecognized types still receive syntax, @context, and common-mistake checks; we show a neutral note rather than failing solely for unknown @type.

Is my data sent to Vinespire's servers when I paste it?

No. Validation runs entirely in your browser with pure client-side TypeScript. Nothing you paste is uploaded for analysis. That keeps sensitive draft markup private and matches Vinespire’s zero-infrastructure free-tools design.

What's the most common structured data mistake?

In practice: incomplete required properties (especially Organization without logo/url), nested objects missing their own @type (address without PostalAddress), sameAs as a bare string instead of an array, and invalid or empty URLs. Accidental duplicate Organization blocks on one page are also frequent after theme or plugin stack-ups.

Do I need @context on every JSON-LD block?

Yes for standalone script tags — each block should include `@context`: `https://schema.org` (or an array/object containing schema.org). Nodes inside an @graph may inherit context from the parent graph object; this tool treats graph children carefully and still flags missing context when the node stands alone without an inherited context.

Why do I have two Organization schema blocks on one page — is that a problem?

It can be. Multiple Organization nodes sometimes appear when a theme and a plugin both inject brand schema. Consumers may merge or pick inconsistently. Prefer one canonical Organization (or clear multi-entity design with distinct @id values). This validator flags duplicate @type when you paste multiple blocks so you can clean accidental copies.

How is this different from the schema generators’ “Validate this” panel?

Each Vinespire schema generator includes a lightweight self-check on the JSON it just built from the form. This Structured Data Validator is the general-purpose counterpart: paste any JSON-LD — hand-written, CMS-exported, inherited, or from another tool — and run the same shared field definitions for known types plus multi-block and common-mistake analysis.

Can I fix broken Organization (or other) markup without editing JSON by hand?

Yes. When a known type fails, result cards link to the matching Vinespire generator (Organization, FAQ, Product, LocalBusiness, or Breadcrumb). Rebuild from fields, copy a fresh script tag, then re-paste here to confirm. Generators and this validator share one field-definition source so create and verify do not drift.

Is this structured data validator free?

Yes. Paste, check, expand every rule, and use generator fix links with no signup and no credit card. Optional paid Vinespire products measure multi-source AI visibility; they are not required to validate JSON-LD structure.

Free tool

Validator

Structured Data Validator

Paste any JSON-LD structured data and instantly check it for syntax errors, missing fields, and common mistakes — works on markup from any source, not just ours.

Free · paste-only · no network

Last updated: July 18, 2026

TL;DR

Paste any JSON-LD structured data and instantly check it for syntax errors, missing fields, and common mistakes — works on markup from any source, not just ours.

What is Structured Data Validator?

The Vinespire Structured Data Validator is a free browser tool for JSON-LD you did not necessarily create here: hand-written markup, CMS plugin exports, inherited theme code, or research copies from page source. Paste a bare object, one or more application/ld+json script tags, @graph documents, or full HTML — we extract and validate each block independently.

For Organization, FAQPage, Product, LocalBusiness, and BreadcrumbList, required and optional field checks use the same SCHEMA_DEFINITIONS as Vinespire’s schema generators (prompt 11). That means create and verify cannot drift: if a generator field requirement changes, this validator updates automatically. Other common types get light-touch checks; everything gets syntax, @context, and common-mistake analysis.

Nothing you paste is sent to Vinespire’s servers. Results use the same three-tier verdict pattern as our other validators: Valid, Valid with warnings, or Invalid — plus expandable rule details and direct links into the matching generator when a known type fails.

Part of Vinespire’s free AI SEO tools.

Structured data validator vs. Google’s Rich Results Test

Capability	Vinespire Structured Data Validator	Google Rich Results Test
Where it runs	Fully in your browser — paste only	Google’s servers — typically a live URL or code paste in their UI
What it checks	JSON syntax, schema.org structure, shared required fields for 5 types, common mistakes	Eligibility for Google rich results under current product policies
Privacy	Nothing pasted is sent to Vinespire	Submitted URL/code is processed by Google
Best use	Fast iteration while authoring or debugging markup	Final pre-publish confirmation for Google surfaces
Recommendation	Use both: this tool for speed and privacy, Google’s for eligibility	Use both: this tool for speed and privacy, Google’s for eligibility

Try it now

Use the Structured Data Validator free tool below. Vinespire processes everything in your browser — no signup required to see or download core output.

Structured data validator vs. Google's Rich Results Test — what's the difference?

Use this Vinespire tool when you need a private, instant structural check: JSON syntax, @context / @type, required fields for the types we model deeply, and common schema.org mistakes. Everything runs in your browser — ideal for iterating on hand-written or CMS-exported JSON-LD without sending page content to a third party on every edit.

Google's Rich Results Test answers a different question: whether a specific page is eligible for Google rich results under today's policies (including restrictions such as narrowed FAQPage eligibility). That check is essential before you treat markup as production-ready for Google surfaces — and it is free. We recommend both: this validator for fast authoring loops, Google's tool for final pre-publish confirmation. Pointing you at a competing free tool is intentional; honest tooling builds more trust than pretending one checker does every job.

How it works

Follow these numbered steps to use this Vinespire free tool. Each step is self-contained so answer engines can cite the process accurately.

Paste JSON-LD
Drop in a bare JSON object, script tag(s), @graph payload, or page HTML containing application/ld+json. Validation never leaves your browser.
Run the check
We parse JSON, verify @context and @type, run shared field rules for known types, then flag common mistakes (nested @type, URLs, empty strings, duplicates).
Read per-block results
Each entity gets a Valid / Valid with warnings / Invalid verdict and an expandable checklist with fix guidance.
Fix and re-check
Use generator links for known types, or edit markup and paste again. Confirm live eligibility with Google’s Rich Results Test before publish.

Understanding your results

Valid means no error-severity rules failed. Valid with warnings means structure is acceptable but best-practice issues remain (for example http context, sameAs as a string, nested objects missing @type). Invalid means fix parse errors or missing required fields for known types first.

Known types share field definitions with Vinespire schema generators — create and verify stay aligned.
This tool does not prove Google rich-result eligibility; use Google’s Rich Results Test on the live URL.
Multi-block and @graph pastes produce one card per entity so one bad node cannot hide another.

Frequently asked questions

Straight answers about this Vinespire free tool — written so each reply stands alone if cited by ChatGPT, Perplexity, or Google AI Overviews.

More free AI visibility utilities from Vinespire — all run in your browser.

Guides and research on AI visibility, AEO, and GEO.

What is Structured Data Validator?

Try it now

Structured data validator vs. Google's Rich Results Test — what's the difference?

How it works

Paste JSON-LD

Run the check

Read per-block results

Fix and re-check

Understanding your results

Frequently asked questions

What's the difference between this and Google's Rich Results Test?

Why does my valid-looking JSON-LD show an error here?

Does this tool check if my structured data will actually show a rich result?

Can I validate multiple schema blocks at once?

What does "@graph" mean and why does my CMS generate it?

My @type isn't recognized — does that mean it's wrong?

Is my data sent to Vinespire's servers when I paste it?

What's the most common structured data mistake?

Do I need @context on every JSON-LD block?

Why do I have two Organization schema blocks on one page — is that a problem?

How is this different from the schema generators’ “Validate this” panel?

Can I fix broken Organization (or other) markup without editing JSON by hand?

Is this structured data validator free?

Related tools

Related guides

Related glossary terms

Explore more free AI SEO tools from Vinespire