HTTP 304 Not Modified
3xx – Redirection
| Status code | 304 |
|---|---|
| Reason phrase | Not Modified |
| Class | 3xx – Redirection |
| Reference | RFC 9110 |
Frequently asked questions
What does HTTP status 304 mean?
The resource has not changed since the last request; the browser uses its cached copy.
Is 304 an error?
No. 304 is a redirection (3xx): the client must take further action, usually requesting another URL.
Where is HTTP 304 defined?
Status code 304 is specified in RFC 9110.