How to Test an API Online

Send HTTP requests and test REST APIs directly from your browser. Free Postman alternative with GET, POST, PUT, DELETE support and response viewer.

Step-by-Step Guide

Type or paste the API endpoint URL. The tool supports HTTP and HTTPS endpoints.

Select GET, POST, PUT, PATCH, or DELETE from the dropdown. For POST/PUT, add your request body in JSON format.

Set custom headers like Authorization, Content-Type, or API keys. Common headers are pre-filled for convenience.

Hit "Send" to fire the request. View the response status code, headers, body (formatted JSON), and response time — all in one place.

No signup, no download. Runs entirely in your browser.

Is this a replacement for Postman?

For quick API testing, yes. No download or signup needed. For complex workflows with collections and environments, Postman is still better.

Can I test APIs that require authentication?

Yes. Add your Bearer token, API key, or Basic Auth credentials in the headers section.

Does it support CORS-restricted APIs?

Browser-based tools are subject to CORS policies. If an API blocks cross-origin requests, you may need to use its CORS proxy or test from a server.

Related Reference