API Fetch Tester — Free Online HTTP Request Tester
Send GET, POST, PUT, DELETE, and other requests to any endpoint and see the status, timing, and JSON response — right in your browser. Free, no signup, nothing to install.
Request
No response yet
Configure your request and click Send Request to see the response here.
Request failed
If this is a CORS error, the API blocks browser requests from other sites. That's a server setting on the API, not a problem with the tool — try an API that allows cross-origin requests (like the examples below).
Quick Examples
What the API Fetch Tester Does
The API Fetch Tester is a lightweight HTTP client that runs in your browser. You choose a method (GET, POST, PUT, DELETE, and more), enter an endpoint URL, optionally add headers and a JSON body, and send the request. The response panel shows the status code, how long the request took, and the response body with JSON syntax highlighting.
It's built for quick checks — confirming an endpoint is live, inspecting the shape of a JSON response, or testing a POST payload — without opening a heavier desktop client or writing throwaway code. Everything happens client-side, so there's nothing to install and no account to create.
One important limitation to know up front: because requests are sent from your browser, they're subject to CORS. Many production APIs block cross-origin browser requests by design, so they'll return a CORS error here even though they work fine from a server or a desktop tool. The example endpoints below allow cross-origin requests and are good for testing the tool itself.
Step-by-Step
Choose a method and enter the URL
Pick GET, POST, PUT, DELETE, etc., and paste the full endpoint including https://.
Add headers or a body if needed
Set headers like Authorization or Content-Type, and add a JSON body for POST, PUT, or PATCH.
Send the request
Click Send Request and watch the status, timing, and response appear.
Read and copy the response
Inspect the highlighted JSON and copy it with one click for use elsewhere.
Reading Status Codes
The status code is the quickest signal of what happened. Codes in the 2xx range mean success (200 OK, 201 Created). 3xx means a redirect. 4xx is a client-side problem — 400 for a malformed request, 401 for missing or bad authentication, 403 for forbidden, 404 for a URL that doesn't exist. 5xx means the server itself failed (500 internal error, 503 unavailable). If you get a 401 or 403, check your headers; if you get a 404, recheck the URL and method.
Features
All HTTP Methods
GET, POST, PUT, DELETE, PATCH, HEAD, and OPTIONS.
Custom Headers
Add any number of headers, including auth tokens and content types.
JSON Body + Format
Send a JSON payload and pretty-print it with one click before sending.
Status & Timing
See the status code and response time for every request.
Highlighted JSON
Responses are formatted and syntax-highlighted for easy reading.
Browser-Only
Requests go straight from your browser to the API — we don't store them.