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A quick way to understand who this helps, what it solves, and where it connects next.
SEO teams, developers, founders, and content operators checking JSON-LD markup before publishing.
Reviewing JSON-LD structure quickly without claiming rich-result eligibility or spinning up a heavier testing tool.
Capture schema-markup-preview intent with a practical JSON-LD inspection page.
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
To preview schema markup, paste your JSON-LD into the tool. It validates that the JSON parses, pretty-prints the result so it is easy to read, and shows a compact summary of the entities and key properties it found.
All of this runs in your browser, so your markup is never uploaded to a server. That makes it a fast, private way to review structured data while you are writing or auditing a page.
This version supports JSON-LD only, which is the cleanest practical entry for a browser-first schema tool. Keeping the first version focused avoids the edge-case sprawl of parsing microdata and RDFa, so the output stays reliable.
It is an inspection and preview tool, not a rich-results eligibility checker. It will not tell you whether you qualify for a specific rich result; instead it helps you confirm the markup is valid JSON-LD and understand the entities it describes.
Short answers for the questions people usually have before trying a utility like this.
Yes. Previewing schema markup is completely free, with no signup, and your JSON-LD is parsed locally in your browser.
No. This tool parses and previews JSON-LD entirely in your browser, so your markup is never sent to a server.
No. This version supports JSON-LD only, which keeps parsing reliable and avoids microdata and RDFa edge cases.
No. It is an inspection and preview tool, not a rich-results eligibility checker. It confirms the markup parses and summarizes the entities it contains.
It shows a compact view of the entities and key properties found in your JSON-LD so you can quickly sanity-check the structure.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Paste JSON-LD, validate that it parses, pretty-print it, and inspect a compact entity summary without rich-result promises.