Schema / JSON-LD Writer
Generate deterministic schema.org markup from a post's fields — BlogPosting, BreadcrumbList & FAQPage. No AI; it only structures what you give it. Paste the block into your page <head>.
Post fields → JSON-LD
The exact Novatise schema engine, computed entirely on your device.
About the Schema / JSON-LD Writer
The Schema / JSON-LD Writer is a free structured-data generator that turns a post's details into valid schema.org JSON-LD — BlogPosting, BreadcrumbList and FAQPage — ready to paste into your page <head>. It is deterministic (no AI) and runs entirely in your browser.
What it does
- Generates BlogPosting (Article) markup: headline, author, dates, image, publisher
- Builds a BreadcrumbList from your site name and page URL
- Auto-extracts an FAQPage from question headings in your article HTML
- Escapes output safely and formats it for a clean copy-and-paste
Why we built it
Valid structured data is one of the highest-leverage, lowest-effort SEO wins — it powers rich results and helps search engines understand a page. But hand-writing JSON-LD is fiddly and easy to break. We packaged the exact schema engine from Novatise as a free JSON-LD generator so anyone can produce correct markup in seconds.
Who it is for
Bloggers, SEO specialists and developers who want valid schema.org markup without a plugin, an API key or a subscription.
Frequently asked questions
What schema types does it generate?
BlogPosting (Article), BreadcrumbList and FAQPage. You can toggle each type on or off before generating.
Is the generated JSON-LD valid?
Yes. It follows schema.org and Google's structured-data guidelines, and you can confirm any output in Google's Rich Results Test.
Do I need to paste article HTML?
Only for the FAQ. FAQPage markup is auto-extracted from H2 to H4 headings that end in a question mark; the other types just need the post fields.