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Structured Data Validator Pro — JSON-LD, Open Graph & Schema Markup Testing Tool

A structured data testing tool and schema markup validator that extracts and validates structured data from any URL — JSON-LD, Open Graph, Twitter Cards, microdata, RDFa, and meta tags — in one pass. Run a rich results check and schema.org validation across a whole sitemap, not one URL at a time. Local schema.org validation, Google rich-result eligibility check, and an AI-discovery readiness score. Pure HTTP, no browser.

Structured Data Validator & Schema Markup Checker Features

• Extracts six structured-data formats per URL: JSON-LD, Open Graph, Twitter Cards, microdata, RDFa, and meta tags.
• Validates JSON-LD blocks against a bundled schema.org rule set with required-field gates per type (Article, Recipe, Product, Event, FAQPage, HowTo, VideoObject).
• Flags Google rich-result eligibility — true when any block satisfies the relevant rich-result requirement set.
• Scores AI-discovery readiness on a 0-100 scale, weighted toward the signals LLM crawlers actually use.
• Detects and lists every schema.org @type found across all formats.
• Optional raw-HTML dump to KVS for offline debugging.
• Pure HTTP fetch via CheerioCrawler — no browser, no proxy by default. The cheap default.

Who Uses Structured Data Audits?

• SEO teams — audit rich-result eligibility across a sitemap before chasing rank changes that turn out to be markup bugs.
• Content engineering — verify JSON-LD blocks ship with every article, product, or recipe page.
• AI / LLM-discovery auditors — score how well a site speaks to AI crawlers, since LLMs lean heavily on structured data.
• Migration QA — diff structured-data coverage before and after a CMS swap or template refactor.
• Competitive research — see exactly which schema.org types competitors mark up, and which ones they miss.

How Structured Data Validator Works

1. Pass in a list of URLs. The actor caps at 15 per run by default to stay inside the Apify tester's 5-minute timeout.
2. CoreCrawler fetches the static HTML over plain HTTP. The handler runs all six extractors in parallel.
3. JSON-LD blocks are validated against the bundled schema.org rule set. Each issue is recorded with severity, path, type, and message.
4. The actor flags Google rich-result eligibility and computes the AI-discovery readiness score, then emits one row per URL.

Input

{
"urls":[
"https://schema.org/Article",
"https://www.apify.com"
],
"maxItems":5,
"extractWhich":["json-ld","open-graph","twitter-cards","microdata","rdfa","meta-tags"],
"validateAgainst":"schema.org",
"includeRawHtml":false
}

Structured Data Validator Output Fields

{
"url":"https://www.apify.com",
"finalUrl":"https://www.apify.com/",
"jsonLd":[
"{\"@context\":\"https://schema.org\",\"@type\":\"Organization\",\"name\":\"Apify\"}"
],
"openGraph":{
"og:title":"Apify - The Web Scraping Platform",
"og:type":"website",
"og:url":"https://apify.com/",
"og:image":"https://apify.com/img/social.png"
},
"twitterCard":{"twitter:card":"summary_large_image"},
"microdata":[],
"rdfa":[],
"metaTags":{"viewport":"width=device-width, initial-scale=1","robots":"index, follow"},
"validationErrors":[],
"schemaTypes":["Organization"],
"googleRichResultEligible":false,
"aiDiscoveryReadiness":{
"hasJsonLd":true,
"hasArticleSchema":false,
"hasFAQ":false,
"hasHowTo":false,
"hasOpenGraph":true,
"score":60
},
"rawHtmlKvsKey":"",
"status":"success",
"errorMsg":"",
"extractedAt":"2026-04-30T12:00:00Z"
}

Pricing

Token charge — functionally free. Apify rejects truly $0 PPE events, so the per-record price is the smallest practical floor.

This actor is the cheap discovery primitive that pairs with paid downstream actors. Audit liberally.

Limits

• maxItems caps at 15 per run by default — sized for the Apify tester's 5-minute timeout.
• The schema.org validator covers the common Google-rich-result types (Article, Recipe, Product, Event, FAQPage, HowTo, VideoObject). Other types parse but skip required-field validation.
• The actor uses HTTP fetch only. Sites that require JS rendering for structured data won't surface anything — pair with a render crawler upstream.
• includeRawHtml=true writes one KVS entry per URL. KVS quotas apply.
• Validation severity is internal — validationErrors strings start with error, warn, or info for downstream filtering.

FAQ

How do I test JSON-LD and schema markup across a whole site instead of one URL? Feed the actor a URL list (or pipe in a sitemap from Sitemap Walker Pro). It runs the same rich results check and schema.org validation on every URL in one run, so you audit the whole site in a single pass rather than pasting URLs into a single-page validator one at a time.

Related Actors

• Sitemap Walker Pro — feed discovered URLs straight into this validator for site-wide structured-data audits.
• SSL & Security Headers Checker — pair for full SEO + security audits per URL.
• Angular SSR State Extractor — for sites where the structured data lives inside Angular's TransferState payload.

Need More Features?

Need additional schema.org types, custom validation rules, or a render-crawler variant? File an issue or get in touch.

Why Use Structured Data Validator Pro?

• Functionally free — $0.0001 per record. Audit your whole sitemap and barely move the needle.
• Six formats, one pass — JSON-LD, Open Graph, Twitter Cards, microdata, RDFa, and meta tags in a single dataset row. Most tools cover one, maybe two.
• AI-discovery score baked in — rich-result eligibility plus an LLM-readiness score, so you know how the site reads to both Google and Claude.

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