Generate JSON-LD structured data
Fill in a form, get JSON-LD ready for your <head>. Japanese address fields are labelled the way they actually map — prefecture, ward, rest — which is the part most generators get wrong.
- Runs entirely in your browser
- Works offline
- No upload
- No sign-up
- No watermark
Loading the tool…
How it works
- Choose the schema type.
- Fill in the fields you have; empty ones are left out rather than emitted blank.
- Copy the script block into your page, or paste existing JSON-LD below to check it.
Why nothing is uploaded
Every operation on this page is done by code running inside your browser tab, using the same engine that renders web pages. The file is read from disk into your tab’s memory, transformed there, and written back out as a download. It is never sent anywhere — not to us, not to a third party.
Verify it yourself
- Open your browser’s developer tools (F12) and select the Network tab.
- Load your file and run the tool.
- The only requests you will see are the tool’s own code and, once cached, none at all.
Frequently asked questions
Does structured data improve rankings?
Not by itself. What it does is make the page eligible for a richer result — review stars, an FAQ accordion, breadcrumbs, event dates — and that usually earns more clicks than moving up a position would.
Which type should I use?
One per page, matching what the page is: Organization or LocalBusiness on the contact page, Article on a post, Product on a product page, FAQPage where you genuinely answer questions. Marking up FAQs that are not visible on the page is a guidelines violation.
Does anything leave my browser?
No. There is no server behind this page doing the work and no API being called — the whole tool is JavaScript running in the tab. Load it once and it keeps working with the connection off.