Next JSON

The Next JSON Toolbox

JSON Schema To JSON

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JSON Tools

Nested JSON Parser and Viewer

Decode and view multiple level JSON strings with ease

Convert JSON To Oneline

Convert any JSON string to one line without spaces or indentation

JSON Schema Generator

Generate a JSON schema from a JSON string

JSON Diff & Compare

Compare two JSON objects and highlight the differences

JSON to TOON Converter

Convert JSON to TOON format for LLM-optimized token efficiency

TOON to JSON Converter

Convert TOON format back to standard JSON

Array Tools

List to Array Converter

Convert input string to an array with different quote styles

How It Works

See how NextJSON can generate a JSON object from a JSON Schema.

Convert JSON Schema to JSON

Generate a sample JSON object from a JSON Schema

Input
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "email": {
      "type": "string"
    },
    "age": {
      "type": "number"
    },
    "online": {
      "type": "boolean"
    },
    "dailyAffirmations": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  },
  "required": [ "message", "mood", "dailyAffirmations"]
}
Output
{
  "name": "John Doe",
  "email": "john@example.com",
  "age": 11,
  "online": true,
  "dailyAffirmations": [
    "sample string",
    "sample string"
  ]
}

Frequently Asked Questions

What does this tool do?

This tool converts a JSON Schema into sample JSON data. It reads your schema's structure and types, then generates valid JSON that conforms to that schema.

How are sample values generated?

Based on the schema type: strings get sample text, numbers get 11, booleans get true. Property names like 'name' or 'email' get context-appropriate samples like 'John Doe' or 'john@example.com'.

Can I use the output as a template?

Absolutely! The generated JSON serves as a starting template. Replace the sample values with your actual data while keeping the structure defined by your schema.

Which JSON Schema versions are supported?

The tool supports common JSON Schema structures including type, properties, items, and required. It works with schemas following draft 2020-12 or similar versions.

Does this site store my data in the cloud?

No, this site does not store or share your data in the cloud. Your data remains private and is kept locally on your broswer.

This site lacks some useful features that I need. Can you add them?

Yes, we welcome all suggestions! Please feel free to share your feedback using the link at the bottom of the page.