HTTP Response Codes Cheat Sheet

1xx: Informational

Code	Status	Description
100	Continue	The server has received the request headers and the client should proceed to send the request body.
101	Switching Protocols	The requester has asked the server to switch protocols.
102	Processing	The server is processing the request but no response is available yet.
103	Early Hints	Used to return some response headers before final HTTP message.

2xx: Success

Code	Status	Description
200	OK	The request was successful.
201	Created	A new resource was successfully created.
202	Accepted	The request has been accepted for processing but not completed.
203	Non-Authoritative Information	The returned information is from a cached copy.
204	No Content	The request was successful, but there's no content to send back.
205	Reset Content	The server has fulfilled the request and wants the client to reset the document view.
206	Partial Content	The server is delivering only part of the resource.
207	Multi-Status	Multiple status codes for multiple operations.
208	Already Reported	Used in DAV to avoid repeating the same resource multiple times.
226	IM Used	The server has fulfilled the request for the resource.

3xx: Redirection

Code	Status	Description
300	Multiple Choices	Multiple options for the resource are available.
301	Moved Permanently	The resource has been permanently moved to a new URL.
302	Found	The resource is temporarily located at a different URL.
303	See Other	The response can be found at a different URL.
304	Not Modified	The resource hasn't been modified since the last request.
307	Temporary Redirect	The request should be repeated with another URL, but future requests should still use the original URL.
308	Permanent Redirect	The resource has been permanently moved to another URL.

4xx: Client Error

Code	Status	Description
400	Bad Request	The server cannot process the request due to a client error.
401	Unauthorized	Authentication is required to access the resource.
402	Payment Required	Reserved for future use.
403	Forbidden	The server understood the request but refuses to authorize it.
404	Not Found	The requested resource could not be found.
405	Method Not Allowed	The request method is not supported for the requested resource.
406	Not Acceptable	The requested resource is capable of generating only content not acceptable according to the Accept headers sent in the request.
407	Proxy Authentication Required	Authentication with the proxy is required.
408	Request Timeout	The server timed out waiting for the request.
409	Conflict	The request could not be completed due to a conflict with the current state of the resource.
410	Gone	The requested resource is no longer available and will not be available again.
411	Length Required	The request did not specify the length of its content.
412	Precondition Failed	The server does not meet one of the preconditions that the requester put on the request.
413	Content Too Large	The request is larger than the server is willing or able to process.
414	URI Too Long	The URI provided was too long for the server to process.
415	Unsupported Media Type	The request entity has a media type which the server or resource does not support.
416	Range Not Satisfiable	The client has asked for a portion of the file, but the server cannot supply that portion.
417	Expectation Failed	The server cannot meet the requirements of the Expect request-header field.
418	I'm a teapot	The server refuses to brew coffee because it is a teapot.
421	Misdirected Request	The request was directed at a server that is not able to produce a response.
422	Unprocessable Content	The request was well-formed but was unable to be followed due to semantic errors.
423	Locked	The resource that is being accessed is locked.
424	Failed Dependency	The request failed due to failure of a previous request.
425	Too Early	The server is unwilling to risk processing a request that might be replayed.
426	Upgrade Required	The client should switch to a different protocol.
428	Precondition Required	The origin server requires the request to be conditional.
429	Too Many Requests	The user has sent too many requests in a given amount of time.
431	Request Header Fields Too Large	The server is unwilling to process the request because its header fields are too large.
451	Unavailable For Legal Reasons

5xx: Server Error

Code	Status	Description
500	Internal Server Error	A generic error message when the server has encountered a situation it doesn't know how to handle.
501	Not Implemented	The server does not support the functionality required to fulfill the request.
502	Bad Gateway	The server was acting as a gateway or proxy and received an invalid response from the upstream server.
503	Service Unavailable	The server is currently unable to handle the request due to temporary overloading or maintenance.
504	Gateway Timeout	The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.
505	HTTP Version Not Supported	The server does not support the HTTP protocol version used in the request.
506	Variant Also Negotiates	Transparent content negotiation for the request results in a circular reference.
507	Insufficient Storage	The server is unable to store the representation needed to complete the request.
508	Loop Detected	The server detected an infinite loop while processing the request.
510	Not Extended	Further extensions to the request are required for the server to fulfill it.
511	Network Authentication Required	The client needs to authenticate to gain network access.