Schema Markup Validator (JSON-LD)
Validate JSON-LD, Microdata & Schema.org markup from any URL or code snippet. Catch syntax errors and missing properties before Google does.
How to Use Schema Markup Validator (JSON-LD)
Choose 'Fetch Website URL Schemas' to pull markup directly from a live page, or 'Paste JSON-LD / HTML Code' to check a snippet before it goes live.
Click 'Validate Schema' to run the validation check. Adding schema markup is only half the job. One typo or missing required property can cause the entire block to silently fail without changing how the page looks.
Review flagged errors — missing required properties, malformed syntax, incorrect types, and nested entity trees.
Fix and re-check until the schema passes Schema.org specifications cleanly.
Why It Matters
- ✓Search Console's rich result reports can lag by days or weeks; this catches errors instantly.
- ✓Broken schema is invisible in the browser, so most site owners never know it's failing.
- ✓Multiple schema types on one page can conflict with each other in ways that are hard to spot manually.
- ✓Clean, valid markup is a prerequisite — not a bonus — for eligibility in rich snippets, AI Overviews, and knowledge panel citations.
Key Features
- •Two input modes: live URL extraction or raw code snippet validation
- •Checks against official Schema.org specifications
- •Flags missing required properties by schema type
- •Supports both JSON-LD and Microdata
- •Instant client-side verification with detailed visual status badges
Frequently Asked Questions
Everything you need to know about Schema Markup Validator (JSON-LD)
Why does my schema look fine but not show up in Google Search Console?
Search Console only reports schema it has successfully crawled and parsed. If a required property is missing or a value is malformed, Google may discard the whole block instead of showing a partial error — which is why manual validation catches issues GSC won't.
What's the difference between this and Google's Rich Results Test?
This tool focuses specifically on schema validity — syntax, structure, and required properties — and lets code be checked before it's live, without needing a published URL.
Can Microdata be validated as well as JSON-LD?
Yes — the validator reads Schema.org markup in both formats.
How often should schema be re-validated?
Any time page content that feeds into the markup changes — title, author, price, dates — since these fields commonly drift out of sync with the schema block over time.
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