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.
|Feature||Android||Chrome for Android||Edge mobile||Firefox for Android||IE mobile||Opera Android||iOS Safari|
- Browser behavior differs if this response erroneously includes a body on persistent connections See 204 No Content for more detail.