JSON Schema Generator

Paste a JSON sample and get a valid JSON Schema instantly. Supports Draft-07 and 2020-12. Automatically detects string formats (date-time, email, uri, uuid, date), distinguishes integer from number, and handles nested objects and arrays. Everything runs in your browser.

Schema version:

Supported formats: date, date-time, email, uri, uuid • Distinguishes integer vs number • All fields marked as required • Runs 100% in your browser.
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