Free tool · No signup
Schema validator
Schema markup (JSON-LD) is how you tell Google and AI assistants exactly what your page is about — your business, your FAQs, your products. Pick one of your sites and this tool finds every schema block on its homepage, checks it for errors, and tells you how to fix them in plain English.
We fetch the page the way a crawler sees it and read every application/ld+json script block.
Useful if the URL fetch fails. We only read the schema blocks — nothing is uploaded or stored.