Codici di Stato HTTP
Strumento SEONuovoConsulta cosa significa qualsiasi codice di stato HTTP.
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All 48 codes
1xx Informational
100 · ContinueThe server received the request headers and the client should proceed to send the request body.
101 · Switching ProtocolsThe server is switching protocols as requested by the client via the Upgrade header.
102 · ProcessingThe server has received and is processing the request, but no response is available yet.
103 · Early HintsUsed to return preliminary headers, often to let the browser preload resources, before the final response.
2xx Success
200 · OKThe request succeeded. The meaning of success depends on the HTTP method used.
201 · CreatedThe request succeeded and a new resource was created as a result, usually after a POST or PUT.
202 · AcceptedThe request was accepted for processing, but the processing has not been completed yet.
203 · Non-Authoritative InformationThe returned metadata is from a local or third-party copy rather than the origin server.
204 · No ContentThe request succeeded but there is no content to send in the response body.
205 · Reset ContentThe request succeeded and the client should reset the document view that sent the request.
206 · Partial ContentThe server is delivering only part of the resource in response to a Range header, used for resumable downloads.
3xx Redirection
300 · Multiple ChoicesThe request has more than one possible response and the client may choose one of them.
301 · Moved PermanentlyThe resource has permanently moved to a new URL, which is given in the Location header.
302 · FoundThe resource temporarily resides at a different URL. Future requests should still use the original URL.
303 · See OtherThe client should fetch the resource at another URL using a GET request, often used after a form POST.
304 · Not ModifiedThe cached version of the resource is still valid, so the client can reuse it without a fresh download.
307 · Temporary RedirectThe resource is temporarily at a different URL and the same HTTP method must be reused for the redirect.
308 · Permanent RedirectThe resource has permanently moved and the same HTTP method must be reused for all future requests.
4xx Client Error
400 · Bad RequestThe server cannot process the request due to a client error such as malformed syntax or invalid parameters.
401 · UnauthorizedAuthentication is required and has either failed or not been provided for the requested resource.
402 · Payment RequiredReserved for future use, sometimes used by APIs to signal that payment or a higher plan is required.
403 · ForbiddenThe server understood the request but refuses to authorize it. Authenticating will not help.
404 · Not FoundThe server cannot find the requested resource. The URL may be broken or the resource may no longer exist.
405 · Method Not AllowedThe HTTP method used is known by the server but is not supported for the target resource.
406 · Not AcceptableThe server cannot produce a response matching the content types listed in the request's Accept headers.
408 · Request TimeoutThe server timed out waiting for the request because the client did not produce one in time.
409 · ConflictThe request conflicts with the current state of the resource, such as an edit conflict or duplicate entry.
410 · GoneThe requested resource is permanently gone and no forwarding address is known. Remove any links to it.
411 · Length RequiredThe server requires a Content-Length header, which was missing from the request.
413 · Payload Too LargeThe request body is larger than the server is willing or able to process.
414 · URI Too LongThe request URL is longer than the server is willing to interpret, often from too many query parameters.
415 · Unsupported Media TypeThe request body is in a media format that the server or resource does not support.
418 · I'm a TeapotAn April Fools' joke from RFC 2324: the server refuses to brew coffee because it is a teapot.
422 · Unprocessable EntityThe request was well formed but contains semantic errors that prevent the server from processing it.
425 · Too EarlyThe server is unwilling to process a request that might be replayed, used to mitigate replay attacks.
426 · Upgrade RequiredThe client should switch to a different protocol, given in the Upgrade header, to complete the request.
428 · Precondition RequiredThe server requires the request to be conditional to prevent lost updates from conflicting writes.
429 · Too Many RequestsThe client has sent too many requests in a given time and is being rate limited. Check the Retry-After header.
431 · Request Header Fields Too LargeThe server refuses the request because its header fields are too large, individually or in total.
451 · Unavailable For Legal ReasonsThe resource is unavailable due to legal demands, such as censorship or a takedown request.
5xx Server Error
500 · Internal Server ErrorThe server hit an unexpected condition that prevented it from fulfilling the request.
501 · Not ImplementedThe server does not support the functionality required to fulfil the request, such as an unknown method.
502 · Bad GatewayActing as a gateway or proxy, the server received an invalid response from the upstream server.
503 · Service UnavailableThe server is temporarily unable to handle the request, usually due to overload or maintenance.
504 · Gateway TimeoutActing as a gateway or proxy, the server did not get a timely response from the upstream server.
505 · HTTP Version Not SupportedThe server does not support the HTTP protocol version that was used in the request.
507 · Insufficient StorageThe server cannot store the representation needed to complete the request, often a WebDAV scenario.
511 · Network Authentication RequiredThe client must authenticate to gain network access, commonly seen on captive portal Wi-Fi networks.
Domande frequenti
Come cerco un codice di stato HTTP?
Scrivi un numero come 404 o 500 nella barra di ricerca e il codice corrispondente appare all'istante, colorato secondo la sua classe. Puoi anche cercare per nome ("not found") o per parole della descrizione ("rate limited", "redirect"). Fai clic su qualsiasi card per copiare il codice e il suo nome.
Viene inviato a un server qualcosa di ciò che cerco?
No. È un riferimento statico che funziona interamente nel tuo browser — le tue ricerche non lasciano mai il tuo dispositivo e non viene caricato né registrato nulla. L'elenco completo dei codici è incluso con la pagina, così funziona anche offline una volta caricata.
Cosa significano le diverse classi di codici di stato?
La prima cifra raggruppa ogni risposta: 1xx è informativo, 2xx è successo, 3xx è reindirizzamento, 4xx è un errore del client (qualcosa non va nella richiesta) e 5xx è un errore del server. Le card sono raggruppate e colorate per classe, così puoi individuare l'intervallo giusto a colpo d'occhio.