Why does my request fail with a CORS error?

Browsers enforce CORS: the target server must include the correct Access-Control-Allow-Origin header. Requests to APIs that don't support CORS will be blocked; use a server-side proxy or a CORS-enabled API for testing.

Is request history saved?

Yes — the last 5 requests (URL, method, headers, body) are stored in localStorage so you can re-run them instantly.

Can I send a JSON body?

Yes — select 'JSON' from the body type helper and the Content-Type header is set to application/json automatically.

What response formats are displayed?

JSON responses are pretty-printed with syntax highlighting; all other responses are shown as plain text.

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Webhook / HTTP Request Tester

Build and send HTTP requests from your browser and inspect the response in detail.

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About this tool

Compose any HTTP request — choose the method, enter a URL, add custom headers with preset shortcuts, and write a request body — then fire it with the Send button. The response panel shows the status code, response headers, and a pretty-printed body if the response is JSON. Response time is measured in milliseconds and your last five requests are saved in localStorage for quick replay.

How to use

1 Select the HTTP method (GET, POST, PUT, PATCH, DELETE) and enter the target URL.
2 Add any required headers using the key-value editor; use the presets for common headers.
3 For POST/PUT/PATCH requests, enter the body and select the Content-Type.
4 Click Send and inspect the status code, headers, and body in the response panel.

Frequently Asked Questions

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