HTTP 304 Not Modified: Meaning & How to Fix

Quick answer

HTTP status code 304 (Not Modified) means: The copy saved in your browser cache is still up to date, so the server does not send the content again. No. This is a normal response, not an error.

Is it an error?

3xx Redirection

No. This is a normal response, not an error.

Further action is needed, usually following a redirect to another URL.

If you run the website

Send correct ETag and Last-Modified headers for caching

Frequently asked questions

What does HTTP 304 mean?

HTTP status code 304 (Not Modified) means: The copy saved in your browser cache is still up to date, so the server does not send the content again.

Is HTTP 304 an error?

No. This is a normal response, not an error.

3xx Redirection

HTTP 300 Multiple ChoicesThe resource has more than one version and the client can choose one.HTTP 301 Moved PermanentlyThe page has moved permanently to a new URL; browsers and search engines should use the new address.HTTP 302 FoundThe page is temporarily available at a different URL.HTTP 303 See OtherThe client should fetch the result from another URL (common after submitting a form).HTTP 307 Temporary RedirectThe page is temporarily at another URL and the request must be repeated there with the same method.HTTP 308 Permanent RedirectThe page has moved permanently and the request must be repeated at the new URL with the same method.