Free JSON Schema Generator Online
Use this free JSON Schema generator to create a schema from a sample JSON. Fast, private, and works directly in your browser.
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What is JSON Schema Generator?
JSON Schema Generator inspects a sample JSON document and produces a JSON Schema (draft-07) describing its structure, types, and required fields. It is useful for validation and API contracts. Generation runs in your browser.
How to use this tool
- Paste a sample JSON object.
- Click Generate schema.
- Copy the JSON Schema.
Features
- Generate JSON Schema (draft-07)
- Infers types and nested objects
- Marks fields as required
- Copy the schema
- Runs entirely in your browser
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
Which JSON Schema version is produced?+
Draft-07, which is widely supported by validators.
Does it infer nested structures?+
Yes. Nested objects and arrays get their own type definitions.
Is my JSON uploaded?+
No. The schema is generated entirely in your browser.
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