Status codes are three-digit responses from a web server that tell you what’s happening when you try to access a webpage. For instance, a 200 OK means everything is working fine, while a 404 Not Found shows the page doesn’t exist. Codes like 301 Moved Permanently help keep your links working even if URLs change, and a 500 Internal Server Error indicates something’s wrong on the server side. Keeping an eye on these codes can really help improve your site’s performance and user experience.
