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304 Not Modified client redirection response code indicates that there is no need to retransmit the requested resources. It is an implicit redirection to a cached resource. This happens when the request method is safe, like a
GET or a
HEAD request, or when the request is conditional and uses a
If-None-Match or a
Many developer tools' network panels of browsers create extraneous requests leading to
304 responses, so that access to the local cache is visible to developers.
304 Not Modified
|RFC 7232, section 4.1: 304 Not Modified||Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests|
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.
|Basic support||Chrome Full support Yes||Edge Full support Yes||Firefox Full support Yes||IE Full support Yes||Opera Full support Yes||Safari Full support Yes||WebView Android Full support Yes||Chrome Android Full support Yes||Edge Mobile Full support Yes||Firefox Android Full support Yes||Opera Android Full support Yes||Safari iOS Full support Yes||Samsung Internet Android Full support Yes|
- Full support
- Full support
- Browser behavior differs if this response erroneously includes a body on persistent connections See 204 No Content for more detail.