HTTP Status Codes Reference
Complete reference of HTTP status codes with descriptions, use cases, and response examples.
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About HTTP Status Codes
HTTP status codes are standardized codes that web servers use to indicate the result of a client's request. They are grouped into five classes based on the first digit.
Status Code Categories
- 1xx (Informational) - Request received, continuing process
- 2xx (Success) - Request successfully received and processed
- 3xx (Redirection) - Further action needed to complete request
- 4xx (Client Error) - Request contains bad syntax or cannot be fulfilled
- 5xx (Server Error) - Server failed to fulfill a valid request
Common Status Codes
- 200 OK - Standard success response
- 201 Created - Resource successfully created
- 301 Moved Permanently - Permanent redirect
- 400 Bad Request - Invalid request syntax
- 401 Unauthorized - Authentication required
- 403 Forbidden - Access denied
- 404 Not Found - Resource not found
- 500 Internal Server Error - Generic server error