A 404 error page is a standard HTTP response code that indicates the server could not find the requested webpage. This could happen for various reasons, such as a broken link, a mistyped URL, or the requested page being deleted or moved.

When a user encounters a 404 error, they are typically presented with a 404 error page. This page serves to inform the user that the requested page is not available and often provides additional information or suggestions on what to do next. The content of a 404 error page can vary, but it usually includes a message like “Page Not Found” or “404 Error,” along with a brief explanation of the situation.

Web developers and designers often customize 404 error pages to make them more user-friendly or to provide helpful information, such as links to the homepage, a site map, or a search bar. Customized 404 pages can help users navigate the website more easily and reduce frustration when they encounter broken links or mistyped URLs. 404.