What kinds of errors does it catch?

Invalid JSON syntax, missing required fields for a given schema type, and incorrect data types — the common ways structured data quietly breaks.

Does passing validation guarantee Google will show a rich result?

No, valid markup is necessary but not sufficient — Google independently decides whether to display a rich result even for fully valid structured data.

Can I validate multiple schema types on the same page at once?

Yes, paste the full JSON-LD block and every schema type within it gets checked.

Does JSON-LD Validator upload my files to a server?

No. JSON-LD Validator runs entirely in your browser using on-device processing, your files never leave your device.

JSON-LD Validator

Check JSON-LD structured data for common errors.

Runs in your browser

JSON-LD

About this tool

JSON-LD structured data that's subtly malformed — a missing required field, a wrong data type, invalid JSON syntax — often fails silently: the page still works fine for visitors, but search engines quietly ignore the markup and any rich result it would have unlocked. This tool checks your JSON-LD for common errors, flagging exactly what's wrong so you can fix your structured data before it silently fails to register with search engines.

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