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Schema.org Markup Validator (JSON-LD, Microdata & RDFa)

Validate Schema.org structured data on any web page for SEO audits.

This Actor:

• Validates JSON-LD blocks (<script type="application/ld+json">) and reports parse errors
• Detects & validates Microdata (itemscope, itemtype, itemprop)
• Detects & validates basic RDFa (property, typeof, about, resource, vocab)
• Highlights detected schema.org types and reports common issues:
  • Missing @type
  • Non-schema.org @context
  • Missing key properties for popular types (Organization, Product, Article, Event, BreadcrumbList, etc.)

Input

• Start URLs: pages to validate.
• Follow internal links (optional): crawl additional pages for site-wide audits.
• Toggles for JSON-LD / Microdata / RDFa validation.

Output

• Dataset: one item per analyzed page (counts, detected types, warnings/errors).
• Key-Value Store:
  • SUMMARY: run summary + top schema.org types
  • REPORT: compact per-page report (includes warnings/errors)

Example API input

{
"startUrls":[{"url":"https://example.com"}],
"maxPages":10,
"followLinks":false,
"validateSchemaOrgBasics":true,
"checkRequiredProperties":true,
"warnIfNoSchemaOrg":true
}

Quick start

Store page: https://apify.com/scrappy_garden/schema-org-markup-validator

Paste this into Input and click Run:

{
"startUrls":[
{
"url":"https://example.com/"
}
],
"proxyConfiguration":{
"useApifyProxy":false
}
}

Outputs (what you get)

• Dataset: Dataset items typically include fields like: url, loadedUrl, statusCode, title, jsonLdBlockCount, microdataItemCount, rdfaStatementCount, schemaTypes, warningCount, errorCount.
• Key-value store: REPORT, SUMMARY

Tips (trust + predictable results)

• Start with 1–3 URLs to validate behavior, then scale up.
• If a target blocks requests, enable Proxy and/or slow down concurrency in Input.
• Use the SUMMARY / REPORT keys (when present) for automation pipelines and monitoring.

Related actors

• meta-tag-analyzer (https://apify.com/scrappy_garden/meta-tag-analyzer)
• open-graph-tag-checker (https://apify.com/scrappy_garden/open-graph-tag-checker)
• twitter-card-validator (https://apify.com/scrappy_garden/twitter-card-validator)
• canonical-url-checker (https://apify.com/scrappy_garden/canonical-url-checker)

Search keywords

schema org markup validator, schema.org markup validator - validate json-ld, microdata & rdfa structured data, website audit, seo