How to use Structured Data Testing Tool
- Enter or paste your text into the input field to begin.
- Adjust the Paste JSON-LD or a <script type=application/ld+json> block option to match what you need.
- The result is computed live in your browser as you edit the input.
- Use Copy to keep or reuse the result.
About this tool
There is no server behind Structured Data Testing Tool. Structured Data Testing 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 Structured Data Testing Tool do?
Structured Data Testing 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.
Is Structured Data Testing Tool free to use?
Yes — Structured Data Testing Tool is completely free, with no usage limits.
Is my input private in Structured Data Testing Tool?
Yes — your input never leaves your device; Structured Data Testing Tool does all the work in your browser.
Does Structured Data Testing Tool validate against schema.org types?
Structured Data Testing Tool builds and checks the structured-data markup in your browser so you can paste it straight into your page.
Does Structured Data Testing Tool work on mobile?
Yes — Structured Data Testing Tool is just a web page and runs on any modern browser, including phones and tablets.