The HTTP 303 See Other redirect status response code, usually sent back as a result of a PUT or POST operation, indicates that the redirects don't link to the newly uploaded resources but to another page, like a confirmation page or an upload progress page. The method used to display this redirected page is always GET.
Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.