GTmetrix
Developer Workflow
Verified
Web performance testing with Core Web Vitals metrics.
freemiumMedium
Verified Mar 23Back to directoryOpen website
SC
free
Medium
instant
Schema Markup Validator
Official Schema.org validator for checking structured data and rich-result markup.
Use it when
Developers and marketers validating schema markup before publishing pages.
Why this is powerful
- Checks structured data against Schema.org vocabulary in a focused validator.
- Catches invalid properties and markup issues before search engines see them.
- Pairs well with launch QA and SEO implementation workflows.
Tradeoffs to know
- Passing schema validation does not guarantee rich-result eligibility.