API Tester
Send HTTP requests and inspect responses. Free Postman alternative in your browser.
Note: Browser-based API testing is subject to CORS restrictions. Some APIs may block requests from browsers. For full flexibility, use the exported cURL command in your terminal.
Free API Testing Tool
Test REST APIs directly in your browser. Build requests with custom headers, JSON bodies, and query parameters. Import and export cURL commands. All requests are made directly from your browser — no proxy server, no data collection.
Features
- Support for GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS methods
- Custom headers and request body (JSON, text, form-encoded)
- Query parameter builder
- cURL import and export
- Request history saved locally
- Response timing and size information
- 100% client-side — no proxy, no data sent to our servers