HTTP 303 See Other tells the client to retrieve the resource at a different URI using GET, regardless of the original request method. This is commonly used after a POST submission to redirect the client to a result page, implementing the Post/Redirect/Get pattern.
303 See OtherPOST /contact HTTP/1.1
Host: www.example.com
User-Agent: curl/8.6.0
Content-Type: application/x-www-form-urlencoded
Content-Length: 33
name=Jane&email=jane%40example.comHTTP/1.1 303 See Other
Location: /contact/thank-you
Content-Length: 0The client should make a GET request to the URI in the Location header, regardless of the original method.
Verify the Location header points to the correct result page.
curl -v -X POST -d 'data=value' https://example.com/form
After processing a form POST, the server redirects to a GET page to prevent duplicate submissions on browser refresh.
| Specification | Section |
|---|---|
| HTTP Semantics | RFC 9110 §15.4.4 |
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