Hackforge Academy

Category: React • Beginner

Published on 15 Apr 2026

Explanation

Postman is an API testing tool used by developers to send HTTP requests (GET, POST, PUT, DELETE, etc.) to a backend server and view responses without writing frontend code. It helps test APIs quickly during development.

Code Example

// Example: Testing a GET API in Postman
GET https://api.example.com/users

// Example: Testing a POST API
POST https://api.example.com/users
Body (JSON):
{
  "name": "hackforge",
  "email": "hackforge@example.com"
}

Explanation

Postman is needed because it allows developers to verify backend APIs independently, debug request/response issues, test authentication tokens, and automate API testing before integrating with frontend applications.

Code Example

// Example: Add Authorization header in 
Postman
Authorization: Bearer <your_token_here>

Explanation

Postman also supports saving collections of API requests, environment variables, automated testing scripts, and collaboration with team members during API development.

Code Example

// Example: Environment variable usage
{{base_url}}/users

Explanation

Common alternatives to Postman include lightweight tools, IDE extensions, and browser-based API testers depending on developer preference and workflow.

Code Example

Popular alternatives:
1. Insomnia
2. Swagger UI
3. Thunder Client (VS Code Extension)
4. curl (Command-line tool)
5. Hoppscotch (Web-based API tester)

Explanation

Each alternative has advantages: Insomnia is lightweight, Swagger UI is great for documented APIs, Thunder Client works inside VS Code, curl is useful for automation/scripts, and Hoppscotch runs directly in the browser.

Code Example

// Example using curl
curl -X GET https://api.example.com/users