HTTP Request Builder
Build and test HTTP API requests with custom headers, body, and parameters.
HTTP Request Builder Features
A lightweight browser-based HTTP client for API testing.
Supports GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS requests.
Set custom request headers and send JSON or text request bodies.
View response body, headers, status code, and response time.
About HTTP Request Builder
This tool lets you build and send HTTP requests directly from your browser. Useful for testing REST APIs, webhooks, and HTTP endpoints without installing any software.
Frequently Asked Questions
Is this tool free to use?
Yes, this tool is completely free.
No account or registration is required.
You can use it as many times as you like.
Why am I getting a CORS error?
CORS errors happen when the target API does not allow requests from browser origins.
This is a browser security restriction, not a tool limitation.
APIs that support CORS will work correctly.
Is my data private?
Requests are sent directly from your browser to the target server.
We do not proxy, log, or store your requests or responses.
Treat sensitive credentials with care when using any online tool.
Can I send JSON data?
Yes. Switch to the Body tab and paste your JSON.
Add a Content-Type: application/json header in the Headers tab.
The response body is automatically formatted if it is valid JSON.
Does it support authentication?
Add Authorization headers manually in the Headers tab.
Bearer tokens, API keys, and Basic auth headers are all supported this way.
There is no dedicated auth panel; headers cover all auth types.
Does it work on mobile?
Yes, the tool is fully responsive.
It works on phones, tablets, and desktops.
No app download is needed.
What browsers are supported?
All modern browsers are supported.
This includes Chrome, Firefox, Safari, and Edge.
Keep your browser updated for best results.
Can I save my requests?
Currently requests are not saved between sessions.
Refresh the page to start a new request.
You can keep the tab open to reuse the same configuration.