HTTP Status Code Reference
Search and browse all HTTP status codes with descriptions. Quick reference for web developers.
Status Codes
How to Use
Type a status code number or keyword to search. Leave empty to see all codes. Results update in real-time as you type.
Frequently Asked Questions
HTTP status codes are three-digit numbers returned by servers to indicate the result of a request. 2xx means success, 3xx means redirection, 4xx means client error, and 5xx means server error.
404 (Not Found) is the most common client error, meaning the requested page doesn't exist. 500 (Internal Server Error) is the most common server error.
301 is a permanent redirect (search engines transfer link equity). 302 is a temporary redirect (search engines keep indexing the original URL).