JSON Schema is a vocabulary that allows you to annotate and validate JSON documents. It defines the structure, types, and constraints of JSON data.

Can this tool auto-detect data types?

Yes, the tool automatically analyzes your JSON data and detects types (string, number, boolean, array, object), formats (email, URI, date), and nested structures.

Which JSON Schema draft does it generate?

The tool generates JSON Schema compatible with the latest draft. You can optionally include the $schema draft reference in the output.

JSON Schema Generator

Generate JSON Schema from any JSON data. Auto-detect types, formats, and nested structures instantly.

Include required fieldsInclude $schema draftInclude title

Input (JSON)

How to Use

Generate JSON Schema from any JSON data. Auto-detect types, formats, and nested structures instantly.

1Paste a valid JSON object or array into the input panel.
2Click Generate Schema to produce a JSON Schema (Draft-07) from the sample data.
3Review the inferred types, required fields, and structure in the output panel.
4Copy the schema or download it as a `.json` file for use in validators or APIs.

Key Features

Generates JSON Schema Draft-07 from any valid JSON input
Infers types (string, number, boolean, array, object, null) automatically
Marks all keys present in the sample as required fields
Handles nested objects and arrays with recursive schema generation

Frequently Asked Questions

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