Tools

JSON Schema Generator from Sample Data

Generate a JSON Schema draft from sample JSON payloads.

JSON Schema Generator

Generate a JSON Schema from example JSON so you can validate or document payloads. API and data teams use this to bootstrap schemas before refining them manually.

How to use the JSON Schema Generator

  1. Paste your sample JSON.
  2. Click Generate.
  3. Copy the generated schema.

Common use cases

  • Creating schemas for API validation.
  • Documenting payloads in services.
  • Building test fixtures with validation.
  • Sharing expected shapes with teammates.

Tips & notes

  • Use representative samples for accurate types.
  • Review optional vs required fields after generation.
  • Merge multiple samples if your data is diverse.

Related developer tools

  • JSON Formatter
  • JSON Key Usage Analyzer
  • API Response Comparator

FAQ

Does it include nested objects?
Yes, nested properties are included.
Does it infer required fields?
It marks fields present in the sample; you can adjust required rules later.
Which draft is used?
The output targets a common JSON Schema draft for broad compatibility.