JSON Schema Generator
Generate JSON Schema from sample JSON data automatically
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What is JSON Schema Generator?
Free online JSON schema generator to paste any JSON data and instantly generate a valid JSON Schema (draft-07) that describes its structure.
The tool automatically detects types (string, number, integer, boolean, null, array, object), generates properties for objects, infers array item types, handles deeply nested structures, and marks all top-level properties as required. Use the generated schema for API validation, form generation, documentation, or data contract enforcement. All processing runs locally in your browser - your data stays private. No signup required.
How to Use JSON Schema Generator
- 1Paste your sample JSON data into the input field on the left
- 2Click 'Generate Schema' or paste JSON to auto-generate the schema
- 3Review the generated JSON Schema on the right
- 4Click 'Copy' to copy the schema to your clipboard or 'Share' to create a shareable link
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