EverythingXiaomi
For vendors
AdvertiseTop spots, featured rows, home sponsor Get listedAdd a product we don't cover yet Claim a listingFree: verify the domain, then correct your page Vendor dashboardNumbers, orders and placements
List your app
Vendor dashboard

StructuredValidator

C
C tier on Schema Markup ToolsScore 6.8 · #6 of 24
Android app
Not listed
Free plan
Yes
Runs on
Web
structuredvalidator.com
The StructuredValidator homepage
Visit site Alternatives

Summary

StructuredValidator is a web tool for checking structured data, with validation focused on JSON-LD. Paste JSON-LD or HTML to see results as you type. It can identify Microdata and RDFa in pasted HTML, but only JSON-LD is validated. Checks cover JSON syntax, contexts, types, property names, value formats, @id references, and required or recommended properties for supported rich-result features. The URL tool fetches server HTML from public HTTP or HTTPS pages, extracts JSON-LD blocks, and validates them in the browser without rendering JavaScript. Fetches are limited to four redirects, eight seconds, 2 MB per page, and 12 per minute per visitor. A comparison view puts two implementations side by side to reveal differences, missing properties, and coverage. Rich-result preview and API access are also available. The tool is free, with a free plan and no account system. Validation history and preferences are stored in browser storage; optional AI suggestions send markup and errors to an AI provider, whose retention policy applies.

Who it is for

It suits SEO professionals and developers who need to check JSON-LD, compare schema implementations, or inspect supported rich-result properties. It is also an option for people who want to validate a page URL without JavaScript rendering.

What is good

  • Validation results appear as you type.
  • Checks JSON-LD syntax, references, and properties.
  • Compares two schema implementations side by side.
  • Includes rich-result preview and API access.
  • Free plan; no account system.

What to know first

  • Only JSON-LD is validated.
  • URL checks do not render JavaScript.
  • AI suggestions send markup and errors to a provider.
  • URL fetches have size, time, redirect, and rate limits.

Verdict

StructuredValidator covers a broad set of JSON-LD checks and offers both pasted-input and URL workflows. Note that URL testing uses server HTML without JavaScript rendering, and optional AI suggestions involve a third-party provider's retention policy.

StructuredValidator plans and pricing

All plans
Free Free Free tool; no signup stated structuredvalidator.com · 3 Oct 2026

Compared on schema markup tools

Free plan
Yesstructuredvalidator.com
Schema validation
Yesstructuredvalidator.com
Rich-result preview
Yesstructuredvalidator.com
API access
Yesstructuredvalidator.com

Facts

Purpose
StructuredValidator checks JSON-LD markup and explains problems with numbered proof marks, plain-English fixes, and the relevant Google or schema.org rule.structuredvalidator.com · 3 Oct 2026
Validation checks
It checks JSON syntax, contexts, types, property names, value formats, @id references, and required or recommended properties for supported rich-result features.structuredvalidator.com · 3 Oct 2026
Supported markup
It detects Microdata and RDFa in pasted HTML but validates JSON-LD only.structuredvalidator.com · 3 Oct 2026
How to use
Users can paste JSON-LD or HTML for validation, and results appear as they type.structuredvalidator.com · 3 Oct 2026
URL testing
The URL tool fetches a page's server HTML, extracts JSON-LD blocks, and validates them in the browser without rendering JavaScript.structuredvalidator.com · 3 Oct 2026
URL limits
URL testing accepts public HTTP and HTTPS addresses and limits fetches to four redirects, eight seconds, 2 MB per page, and 12 fetches per minute per visitor.structuredvalidator.com · 3 Oct 2026
Comparison
The comparison tool shows two schema implementations side by side to identify differences, missing properties, and coverage.structuredvalidator.com · 3 Oct 2026
Privacy
Validation history and preferences are stored in browser storage, and the privacy policy says validation data is not retained on the service's servers.structuredvalidator.com · 3 Oct 2026
Optional AI
AI fix suggestions require an explicit user action and send the schema markup and validation errors to an AI provider via Vercel AI Gateway.structuredvalidator.com · 3 Oct 2026
AI data retention
AI request retention follows the AI provider's data retention policy.structuredvalidator.com · 3 Oct 2026
No account
The privacy policy says the service has no authentication system and does not collect login credentials.structuredvalidator.com · 3 Oct 2026
Audience
The maker describes the tool as intended for SEO professionals and developers.structuredvalidator.com · 3 Oct 2026

Best StructuredValidator alternatives

See all 20
Btier Baseline Labs Schema Generator #1 7.0 €79/moBtier JSON Schema App SaaS Schema #2 7.0 $14/moBtier Rolling Schema #3 7.0 €79/moCtier JSON-LD Generator #4 6.9 FreeCtier SchemaValid #5 6.9 FreeCtier Schema Markup Generator #7 6.7 Free

Where it ranks on Everything Xiaomi

Is StructuredValidator yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote StructuredValidator

Sources