HTTP status codes are three-digit numbers issued by a server in response to a client’s request made to the server. These codes are grouped into five categories that indicate different types of responses: informational responses (100-199), successful responses (200-299), redirection messages (300-399), client error responses (400-499), and server error responses (500-599). For instance, a “200 OK” status means the request was successful, while a “404 Not Found” indicates that the requested resource could not be found. Understanding these codes is vital for diagnosing web issues, improving website performance, and enhancing user experience by providing clear insights into the nature of any problems encountered during web interactions. Discover more about HTTP Status Codes!