JSON Schema Generator
Auto-generate JSON Schema from a sample JSON object — detects types, formats, and required fields.
🔒 No uploads⚡ Instant🆓 Free
// Paste JSON to generate schema
How It Works
1
Paste a sample JSON object into the input area.
2
The schema is generated instantly with inferred types and formats.
3
Copy the schema and use it in your API validation or documentation.
Features
✓Auto-detects string, number, integer, boolean, array, object
✓Recognizes email, date, date-time, URI, UUID formats
✓Supports Draft-07 and 2020-12 versions
✓Infers required fields automatically
✓Custom schema title
✓100% browser-based — no data uploaded
Frequently Asked Questions
What JSON Schema versions are supported?▼
The tool generates schemas compatible with Draft-07 and 2020-12 (the latest stable version).
How does format detection work?▼
The tool analyzes string values using regex patterns to detect common formats like email addresses, URLs, dates, UUIDs, and date-times.
Is my JSON data sent anywhere?▼
No. All processing happens locally in your browser.
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