HITZ · FREE TOOL

Schema and JSON-LD checker

Find the errors in your structured data and get a ready block for the page.

QUICK CHECK

The check makes no changes to your site and does not store what you enter.

8markup types
10seconds to a result

HOW IT WORKS

From check to ready code

01

Point to the page

Paste a URL or your existing JSON-LD.

02

Read the breakdown

We show errors, gaps, and disputed properties.

03

Take the fix

Copy the corrected markup and add it to the HEAD.

ARTICLE

How structured data helps search engines and AI systems

Which markup to use for services, articles, and company pages.

Read the articles ↗

QUESTIONS ABOUT THE TOOL

FAQ

01What does the tool check+

JSON-LD syntax, Schema.org types, key properties, absolute URLs, and the main page signals.

02Can I check a page that has no markup yet+

Yes. The tool builds a basic JSON-LD from the data it finds on the site.

03Does markup guarantee a rich result+

No. Correct markup helps a search engine understand the page, but the decision to show a rich result belongs to the search engine.

04Where do I put the generated JSON-LD+

Inside the page HEAD, or through your platform’s own field. On Tilda that is the extra HTML code in page settings.