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JSON Schema Validator
Check JSON payloads against schemas without sending data to a server.
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Frequently asked questions
Is JSON Schema Validator free?
Yes. The core workflow is free, needs no account, and runs in your browser.
Does blackccbox upload my data?
No. The tool processes the input on this device. Network requests only load the application libraries.
What should I know before using the result?
Schema behavior depends on the supported Ajv draft and strict mode is disabled.