About API Tester Tool
Our API Tester is a lightweight, free alternative to Postman for testing REST APIs. Perfect for quick API testing, debugging, and development. Test any HTTP endpoint with custom headers, query parameters, and request bodies.
Features
- Support for GET, POST, PUT, DELETE, PATCH methods
- Custom headers and authentication (Bearer, Basic Auth)
- JSON request body editor with validation
- Formatted JSON response viewer
- Response time and status code display
- Copy response with one click
How to Test an API
- Enter the API endpoint URL
- Select HTTP method (GET, POST, etc.)
- Add headers if needed (Authorization, Content-Type)
- Add request body for POST/PUT requests
- Click "Send Request" to test
- View formatted response and status code
What is a REST API?
REST (Representational State Transfer) API is an architectural style for building web services. REST APIs use HTTP methods (GET, POST, PUT, DELETE) to perform CRUD operations on resources. They return data in JSON or XML format and are stateless, making them perfect for modern web applications.