303 See Other

Go look over there instead.

What it properly means

Directs the client to fetch the result from another URI with a GET request.

Class
3xx Redirection: go away
Defined in
RFC 9110, section 15.4.4

Get one yourself

This endpoint really answers with 303. Point your client at it and see what it does.

curl -i https://httpcodes.dev/api/303

People mix this up with

  • 302 Found303307 Temporary Redirect

    Which temporary redirect?

    302 is the vague old one: clients may or may not switch to GET. 303 says always follow with a GET, which is what you want after a form POST. 307 says keep the same method and body.