What are HTTP status codes?
They are 3-digit codes a web server returns with every response, indicating the outcome of the request: 2xx means success, 3xx is a redirection, 4xx indicates a client-side error (e.g. page not found), and 5xx indicates a server-side error.
How to use it
Type a code (e.g. "404") or a keyword (e.g. "not found", "redirect", "success") to filter the table instantly.
Frequently asked questions
What is the difference between 301 and 302?
301 is a permanent redirect (browsers and search engines should update the link to the new address), while 302 is temporary (the original address should keep being used in the future) — using the wrong code can hurt a site's SEO.
What does error 429 mean?
"Too Many Requests" — the client sent too many requests in a short period, and the server is rate-limiting it to protect itself from overload or abuse.