JSON Schema Validator

Check a JSON document against a JSON Schema and see every problem with its exact path — the judge a model's "it looks valid" is not.

Validate JSON against a schema

Paste a JSON Schema and a JSON document. Problems are reported with their path.

Nothing validated yet

Paste a schema and a document above, then press “Validate”.

Supports a practical subset of JSON Schema draft 2020-12; keywords outside the subset are ignored, and format checks are heuristic.

Runs entirely in your browser. Nothing is uploaded.

How it works

This utility runs locally in your browser for privacy and speed.

1 ⚡

Unlimited local tools

This run costs 1 credit(s) and is saved to your history automatically.

Log in to save and view your usage history.

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Frequently asked questions

Do I get free credits to try JSON Schema Validator?
Yes — new accounts get 3 free credits to spend on any tool, JSON Schema Validator included. After that you only pay for what you run.
How many credits does JSON Schema Validator cost?
Everything runs in your browser and nothing is uploaded: free accounts pay 1 credit per run, and Pro or Pro+ members run it as often as they like.
Is the content I paste private?
JSON Schema Validator uses your input only to generate the result. Stored results are deleted automatically by our retention policy, and you can remove any run from your history.
Do I need to install anything?
No. JSON Schema Validator works in any modern browser — nothing to download or install.

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