OpenAPI to Postman Converter — Convert Swagger Specs to Test Collections
Convert OpenAPI 3.x JSON or YAML specs into a ready-to-import Postman Collection v2.1. Paths, methods, parameters, request bodies, and tags are all mapped automatically.
How to Use OpenAPI to Postman Converter — Convert Swagger Specs to Test Collections
How to Use the OpenAPI to Postman Converter
Step 1: Paste or Upload Your OpenAPI Spec
Choose one of two input methods:
- Paste JSON / YAML — copy your OpenAPI 3.x spec and paste it directly (supports both JSON and YAML)
- Upload File — drag and drop or click to upload a
.json,.yaml, or.ymlfile (max 10 MB)
You can also click the Petstore (JSON) or Users API (YAML) example buttons to load a sample spec instantly.
Step 2: Convert
Click Convert to Postman. The tool will:
- Map every
pathsentry and HTTP method to a Postman request item - Extract path variables (
{userId}→:userId) with example values - Map query parameters with inferred example values
- Map header parameters
- Generate JSON request body examples from
requestBodyschemas - Support
multipart/form-dataandapplication/x-www-form-urlencodedbody modes - Organize requests into folders by their OpenAPI
tags - Add a
{{baseUrl}}collection variable pre-filled with the server URL
Step 3: Download and Import
Click Download .json to save the Postman Collection file. Then in Postman:
- Click Import in the top-left corner
- Drag in the downloaded
.jsonfile (or click to select it) - Click Import — your collection is ready
All requests will use the {{baseUrl}} collection variable. Update it under Variables in the collection editor if your environment URL differs.
What Is Converted
| OpenAPI Field | Postman Field |
|---|---|
info.title | Collection name |
servers[0].url | {{baseUrl}} variable |
paths + HTTP method | Request item |
operationId / summary | Request name |
tags | Folder name |
Path variables {id} | URL variable :id |
| Query parameters | URL query params |
| Header parameters | Request headers |
requestBody (JSON) | Raw JSON body |
requestBody (form-data) | Form-data body |
requestBody (urlencoded) | URL-encoded body |
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