Postman Collection Generator — Import-Ready Builder
Build a Postman Collection v2.1 JSON file in your browser without writing JSON by hand. Add a collection name and description, then define your API endpoints — each with method, URL, headers, and request body. The collection JSON is generated in real time. Download the file and import it directly into Postman or Insomnia. Free, client-side, no signup.
How to Use Postman Collection Generator — Import-Ready Builder
How to Use the Postman Collection Generator
Step 1: Name Your Collection
Enter a collection name and optional description at the top of the left panel. These appear in Postman when you import the file.
Step 2: Define Endpoints
For each API endpoint:
- Select the HTTP method (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS)
- Enter a name for the request (e.g. "List Users")
- Enter the URL — use Postman variable syntax for reusable values:
- {{baseUrl}}/users — base URL variable
- {{baseUrl}}/users/{{userId}} — path variable
- Add request headers (click "Add header")
- Add a request body for POST, PUT, and PATCH requests
- Optionally add a short description
Step 3: Add More Endpoints
Click "Add Endpoint" to add another request to the collection. Each endpoint appears as a collapsible row. Click the row header to expand or collapse it.
Step 4: Download and Import
Click Download to save the .postman_collection.json file. In Postman:
- Click Import (top-left)
- Drag the file into the import dialog
- Open the collection, go to Variables, and set baseUrl to your actual API URL
Load Examples
Use the example buttons to pre-fill the builder:
- REST CRUD — 5-endpoint Users API (list, get, create, update, delete)
- Auth API — Login, refresh token, get profile, logout
- Starter — Single health-check endpoint to build from
Frequently Asked Questions
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