A 404 error page is a web page displayed by a server when it is unable to find the requested URL. It is a common error message that is displayed when a user clicks on a broken link or types in an incorrect URL.
A 404 error page usually contains a message such as “404 Error – Page Not Found” or “The page you are looking for cannot be found”. The page may also include suggestions for what the user can do next, such as trying a different URL or searching for the desired content on the website.
In terms of SEO, a 404 error page can negatively impact a website’s user experience, which can in turn hurt the website’s search engine ranking. To prevent this, it is important to set up custom 404 error pages that are informative and helpful to users and to regularly monitor the website’s broken links and resolve any issues as soon as they arise.