304 Not Modified
3xx Redirection. The resource hasn't changed since the version specified by request headers, so the client can use its cached copy.
3xx Redirection
What it means
The resource hasn't changed since the version specified by request headers, so the client can use its cached copy.
Common causes
Returned when a client sends conditional headers (If-Modified-Since or If-None-Match) and the resource is unchanged.
How to fix it
No fix needed — use the cached version of the resource.
Frequently asked questions
What does HTTP 304 mean?
The resource hasn't changed since the version specified by request headers, so the client can use its cached copy.
What causes a 304 Not Modified?
Returned when a client sends conditional headers (If-Modified-Since or If-None-Match) and the resource is unchanged.
How do I fix a 304 error?
No fix needed — use the cached version of the resource.
Other 3xx Redirection codes
How was this tool?
Your feedback helps us improve HTTP Status Codes.