OpenAPI to JSON
Convert OpenAPI YAML to JSON
About OpenAPI Converter
Convert your OpenAPI (Swagger) YAML specifications to JSON format. This tool uses js-yaml to parse the YAML and outputs formatted JSON.
About OpenAPI to JSON Schema (Swagger)
1What is it?
Extract standard JSON Schemas from OpenAPI (Swagger) specifications. Convert complex API definitions into reusable schemas for frontend validation (e.g., react-hook-form) or mock data generation. Supports both YAML and JSON inputs.
2Use Cases
- Generate form validation rules from backend API specs
- Create mock data generators rooted in actual API definitions
- Migrate legacy Swagger 2.0 specs to modern JSON Schema tools
- Isolate specific data models from large API documents
3Examples
Extract Schema
Input
components:
schemas:
User: ...Output
{
"$schema": "...",
"definitions": { "User": ... }
}?Frequently Asked Questions
Does it support Swagger 2.0?
Yes, it supports both OpenAPI 3.0+ and legacy Swagger 2.0 definitions. It automatically detects the version and tries to convert the schema components appropriately.
Why do I need JSON Schema?
While OpenAPI describes the whole API (paths, methods), JSON Schema describes just the data payload. Tools like `ajv` (validator) or `react-jsonschema-form` need pure JSON Schema, not the full OpenAPI doc.