If a particular page on a website does not load for some reason or if a link is broken, the site visitor shall see an error page with a generic message. The page shall have nothing in common with the rest of the Internet site, that could make the visitor leave your Internet site. A likely solution in this case is a feature offered by some website hosting service providers - the option to set up your own custom-made error pages that will have the same layout as your Internet site and which can contain any images or text that you'd like dependent upon the particular error. There are 4 popular errors that can occur and they involve these so-called HTTP status codes - 400, when your world-wide web browser sends a bad request to the hosting server and it can't be processed; 401, in case you are supposed to log in to see some web page, but you have not done this yet; 403, if you don't have a permission to see a certain page; and 404, in case a link which you've clicked leads to a file which doesn't exist. In each of these scenarios, website visitors shall be able to see your personalized content instead of a generic error page.