Schema Markup Extractor

Yes. All extraction happens in your browser using the built-in DOMParser. No HTML is uploaded to any server; your data remains 100% private.

Schema markup is structured data that helps search engines understand your content. It comes in three flavours: JSON-LD (script blocks), Microdata (HTML attributes), and RDFa (similar attribute syntax). Search engines use it for rich results like review stars, recipe cards, and event cards.

Browser security (CORS policy) prevents client-side JavaScript from fetching arbitrary URLs. To keep this tool 100% client-side and privacy-respecting, we ask you to paste the HTML yourself instead of relying on a server-side proxy.

Yes, completely free with no sign-up required. Extract unlimited schemas from any HTML source.

Yes. Once the page loads, extraction runs locally in your browser – no network calls. Ideal for working on internal or confidential pages.

A broken JSON-LD block is surfaced as a “Parse Error” card showing the specific error message. Other valid schemas on the same page are still extracted normally.

The Microdata parser walks `itemscope` elements recursively, so a `Product` containing an `Offer` is represented as a nested JSON object with the correct `@type` on each level.

JSON-LD is a separate <script> block with pure JSON – easiest to maintain and Google’s preferred format. Microdata uses HTML attributes inline with content (`itemprop=”name”`). RDFa uses `typeof` and `property` attributes. All three convey the same schema information.

Yes. Every “ block, every `itemscope` element, and every `typeof` element becomes its own card. The stats line shows the breakdown.

Not directly – Google’s test accepts a URL or raw HTML, not a schema array. But the downloaded JSON is useful for diffing against previous extractions, feeding into custom validators, or archiving a page’s structured data over time.