404 pages, also known as error pages, appear when a requested webpage cannot be found. They present an opportunity for creative engagement and helpful redirection, improving user experience and website retention. Search Engine Journal contributor Shelly Walsh has published an article featuring 40 examples of 404 pages. She says, “The best 404 pages are those that feel authentic, giving a proper response to users that makes their unplanned step off of your sitemap feel considered. Even better, the 404 page can offer alternative page options to take those users elsewhere within a website, which... [...]