- 5xx server errors
5xx server errors are HTTP status codes from 500 to 599.
- 200 OK
The status code 200 OK means that an HTTP request has succeeded.
- 304 Not Modified
304 Not Modified is an HTTP status code that tells a client its cached copy of a resource is still current, so the server does not send …
- 401 Unauthorized
The HTTP status code 401 Unauthorized means a request lacks valid authentication credentials for the requested resource.
- 403 Forbidden
403 Forbidden is an HTTP status code in the 4xx class.
- 404 error
A 404 error (404 Not Found) is the HTTP status code a server returns when it finds nothing at the requested URL.
- 410 Gone
410 Gone is an HTTP status code that says a resource is no longer available on the server and that this is likely to be permanent.
- 429 Too Many Requests
The HTTP status code 429 Too Many Requests means a client has sent too many requests in a given time.
- 451 Unavailable For Legal Reasons
451 Unavailable For Legal Reasons is an HTTP status code that signals the server denies access to a resource because of a legal demand.
- 500 Internal Server Error
A 500 Internal Server Error is a generic HTTP server error.
- 502 Bad Gateway
The HTTP status code 502 Bad Gateway means a server acting as a gateway or proxy received an invalid response from an upstream server …
- 503 Service Unavailable
The HTTP status code 503 Service Unavailable means the server is not ready to handle the request.
- 504 Gateway Timeout
The HTTP status code 504 Gateway Timeout means a server acting as a gateway or proxy did not receive a timely response from the upstream …
- Broken link
A broken link is a hyperlink whose target cannot be loaded, usually because the target page returns an error such as 404 or does not …
- Custom 404 page
A custom 404 page is the page a server shows when a requested URL does not exist, designed to help visitors continue.
- Dead-end pages
Dead-end pages are pages where a visitor has no obvious next step, because no link or call to action leads onward.
- HTTP status code
An HTTP status code is the three-digit number a web server sends with every response.