Common HTTP status codes Cheat Sheet

1xx - Informational

• 100: Continue - Everything is ok so far
• 102: Processing - Request is being processed, no response available yet

2xx - Success

• 200: OK - Request successful
• 201: Created - Request fulfilled, new resource has been created

3xx - Redirection

• 301: Moved Permanently - Resource permanently moved to a new URL
• 302: Moved Temporarily - Resource temporarily moved to a new URL

4xx - Client Error

• 400: Bad Request - Server cannot understand and process the request
• 401: Unauthorized - Authentication required, user not yet authenticated
• 403: Forbidden - Insufficient access permissions to the resource
• 404: Not Found - Requested resource not found
• 410: Gone - Request no longer available due to intentional removal

5xx - Server Error

• 500: Internal Server Error - Generic unhandled server error
• 502: Bad Gateway - Gateway server got an invalid response
• 503: Service Unavailable - Server temporarily unable to handle request
• 504: Gateway Timeout - Gateway server didn't get a response in time