Question 1

What is a schema markup validator?

Accepted Answer

A schema markup validator is a tool that checks a page's structured data against the rules search engines use.

This one checks JSON-LD type by type, against Google's rules, and shows how to fix each issue.

Question 2

How do I check my schema markup?

Accepted Answer

Type your page's address into the validator, or paste your JSON-LD, and press Validate.

You get a score, each type with its issues, and the formatted code.

Question 3

What is JSON-LD?

Accepted Answer

JSON-LD is a way of writing structured data in a script tag, separate from the page's HTML.

It's the format Google recommends for schema markup.

Question 4

What is the difference between an error and a warning?

Accepted Answer

An error means Google won't use the markup, and a warning means it's allowed but costs you something.

Fix errors first.

Question 5

Does valid schema guarantee a rich result?

Accepted Answer

No, valid schema makes a page eligible, and Google decides whether to show a rich result.

Google's Rich Results Test shows which ones a page can get.

Question 6

Why doesn't my schema show here?

Accepted Answer

The validator reads the page without running JavaScript, so markup a script adds later won't show.

Google's Rich Results Test runs the page's scripts, so it sees that markup.

Question 7

Is the schema markup validator free?

Accepted Answer

Yes, the schema markup validator is free, with no sign-up.

To keep it free for everyone, each person can check 30 pages every 10 minutes.

Question 8

Who made the schema markup validator?

Accepted Answer

I did. I'm Navid Moazzez, and I made the schema markup validator as one of my free tools on navid.me.

You can read more about me.

Question 9

What other free tools can help?

Accepted Answer

Free Schema Markup Validator (+ Guide)