Generate structured data (JSON-LD)

Fill in a form and get the code (JSON-LD) ready to paste into your page. Japanese address fields are labelled the way they really map — prefecture, city or ward, the 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 type of page (organisation, product, article…).
Fill in the fields you know; empty ones are simply left out.
Copy the code block into your page, or paste existing code 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 fetch the tool’s own code — and, for a few heavy tools, their open-source engine from a public CDN — plus one small page-view ping to loreatec.jp (page address and title, nothing more). None of them carry your file.

Proof it stays local →

Frequently asked questions

Does structured data improve rankings?

Not by itself. What it does is make the page eligible for a richer search result — review stars, an FAQ list, breadcrumbs, event dates — and that usually earns more clicks than moving up one 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. Adding FAQ code for questions that are not actually shown on the page breaks Google’s guidelines.

Does anything leave my browser?

No. Nothing is sent to a server. The whole tool is a small program that runs inside your browser tab. Once the page has loaded, it keeps working even with the internet switched off.