Schema Extractor
Paste HTML to extract and validate its JSON-LD structured data.
Paste HTML source
Results
Paste your source on the left to see the analysis here.
Extract JSON-LD Structured Data
Paste a page's HTML and this tool finds every JSON-LD script block, validates the JSON, pretty-prints it, and lists the Schema.org types it contains. It is the fastest way to see exactly what structured data a page exposes â and to catch broken markup.
What it surfaces
- Every application/ld+json block on the page
- The schema @type(s) inside each block, including @graph
- Pretty-printed, copyable JSON
- A clear flag for any block that fails to parse
How to get the HTML
Open the page, view its source (Ctrl/Cmd+U), copy everything, and paste it here. The extraction runs entirely in your browser.
Private & Processed Locally
Because you paste the source, nothing is fetched server-side and nothing is uploaded. After extracting, validate the markup with Google's Rich Results Test to check rich-result eligibility.
Frequently Asked Questions
Common questions about the Schema Extractor.
What does the Schema Extractor do?
It finds every JSON-LD script block in pasted HTML, validates the JSON, pretty-prints it, and lists the schema types found.
Why paste HTML instead of a URL?
It runs fully in your browser for privacy, and browsers cannot fetch other sites, so you paste the page source (View Source / Ctrl+U).
Does it flag invalid JSON-LD?
Yes. Blocks that fail to parse are clearly marked so you can spot broken structured data.