schema JSON Schema Generator
Paste sample JSON and instantly generate a matching JSON Schema (Draft-07).
Instead of writing a JSON Schema by hand, this tool generates one automatically by analyzing a sample piece of JSON data - inferring the types, structure, and required fields from your example. It's a fast starting point for documenting an API's data shape or setting up validation without writing the schema from scratch.
Frequently asked questions
It infers structure and types directly from your sample data, so it accurately reflects that example - but it can't know about optional fields, valid ranges, or variations that simply aren't present in the one sample you provided. Review and adjust the generated schema for edge cases.
Yes - paste it into the JSON Schema Validator tool (or any standard JSON Schema-compatible validator) to check other JSON data against it.
Since it only sees your one sample, fields present in that sample are typically marked required by default - manually adjust which fields should actually be optional based on your real use case.