HTTP Status Codes
Complete searchable reference for all HTTP status codes (1xx–5xx). Free online HTTP status code guide.
Continue
The server received the request headers and client should proceed
Switching Protocols
Server agrees to switch protocols
OK
Request succeeded
Created
Resource was created successfully
No Content
Success with no response body
Moved Permanently
Resource moved to new URL permanently
Found
Resource temporarily at different URL
Not Modified
Resource has not been modified since last request
Bad Request
Server cannot process due to client error
Unauthorized
Authentication is required
Forbidden
Server refuses to authorize the request
Not Found
Resource not found
Method Not Allowed
HTTP method not supported
Request Timeout
Server timed out waiting for the request
Conflict
Request conflicts with current server state
Gone
Resource permanently removed
Unprocessable Entity
Request well-formed but has semantic errors
Too Many Requests
Rate limit exceeded
Internal Server Error
Server encountered unexpected condition
Bad Gateway
Invalid response from upstream server
Service Unavailable
Server not ready to handle request
Gateway Timeout
Upstream server did not respond in time