How to use Schema Checker Tool
- Start by adding the text you want to check into Schema Checker Tool.
- Tune the Paste JSON-LD or a <script type=application/ld+json> block control before you check.
- Schema Checker Tool updates the output automatically as you type.
- When it looks right, Copy to save it.
About this tool
There is no server behind Schema Checker Tool. Schema Checker Tool builds structured-data markup in your browser from the fields you fill in.
The output follows schema.org shapes so search engines can read it. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.
Frequently asked questions
What does Schema Checker Tool do?
Schema Checker Tool runs entirely on your device: add your input using the Paste JSON-LD or a <script type=application/ld+json> block control, and it checks it locally in real time.
Do I need an account for Schema Checker Tool?
No — Schema Checker Tool needs no account, sign-up or installation.
Does Schema Checker Tool upload my data?
No — Schema Checker Tool processes everything locally in your browser, so nothing you enter is uploaded or stored.
Does Schema Checker Tool validate against schema.org types?
Schema Checker Tool builds and checks the structured-data markup in your browser so you can paste it straight into your page.
Can I use Schema Checker Tool without a connection?
Yes — after the first load Schema Checker Tool runs entirely offline.