API Tester - Free Online HTTP Request Tool

API Tester

Make HTTP requests and inspect responses. Your mini Postman, right in the browser.

Request Configuration

Sending Request...

Waiting for server response.

What is an API Tester?

An API Tester is a developer tool that allows you to send HTTP requests to any endpoint and inspect the full response. It works like a simplified version of Postman, running entirely in your browser with server-side curl execution for reliable cross-origin requests.

Supported HTTP Methods

Response Analysis

After each request, you can inspect the full response including status code, response time, response size, response headers, and the formatted body. JSON responses are automatically pretty-printed for readability.

Frequently Asked Questions

Is my API data secure?

Yes. Requests are made server-side using cURL and responses are displayed in your browser. No data is stored on our servers.

Can I test authenticated APIs?

Yes. Add authorization headers (e.g., Bearer token, API key) in the Headers tab before sending your request.