Lesson 1 of 5 · Basics
What structured data is
What it is
Structured data (schema.org JSON-LD) is code that labels facts on your page: business name, address, hours, services, reviews.
Why it matters
It removes guesswork for search engines and AI assistants reading your site.
✓ Good example
A LocalBusiness JSON-LD block on your homepage.
✗ Common mistake
Facts only in images or PDFs.
Try it: what machines see
Smith Plumbing… call us… we're open… somewhere in Springfield (machines have to guess)
You pass when: You know which page holds your business schema.
Check it now with our free Schema markup checker.