The short answer
Structured data validation is testing that your markup has no syntax errors, uses supported types and properties, and matches what the page actually shows. Passing a validator does not guarantee any feature or citation.
Updated Oct 18 2026
Why Structured Data Validation matters
Broken or contradictory markup can be ignored or can mislead. A quick check before shipping prevents silent failures.
How to measure or use it
Run Google’s Rich Results Test and the Schema Markup Validator, then compare the markup with the visible page by eye.
How I handle it
Every schema change I ship is validated first, and I test again after any template change.
Related terms
- Schema MarkupStructured data added to a page so machines can read what the page is about.Read
- Entity LinkingConnecting your brand to its official profiles so systems know they are the same entity.Read
- AI Crawl PathwayThe route AI bots can follow to discover, render, understand and revisit your important pages.Read
Structured Data Validation questions
Is a green result enough?
No. A validator checks the syntax, not the truth. You still have to confirm the markup says what the page says.
How often should I re test?
After any template or CMS change, and whenever a page’s facts change.