Is JSON Schema Generator free?

Yes, JSON Schema Generator is completely free to use with no signup required.

Does JSON Schema Generator send my data to a server?

No. JSON Schema Generator runs entirely in your browser using client-side JavaScript. Your data never leaves your device.

Generate drafts-compliant JSON Schema from any JSON sample. Customize requirements and examples locally. No data uploaded.

DevTab

Never leaves your browser

Generate a drafts-compliant JSON Schema from a JSON sample, offline in your browser.

Schema Generation Options

Require all propertiesInclude examplesAdd description keys

JSON Input Payload

Generated JSON Schema

Valid JSON Input842 B