Discover the best 404 error page inspiration from the best and largest SaaS websites. The 404 error page is often overlooked when it comes to designing a website. If not overlooked, it’s often designed at the end of the creation process. It makes sense to keep the error page at the end as you might think it’s not important, most people will never see that page. There are multiple reasons why someone might land on your 404 error page and some of those reasons are not always your responsibilities. For example, another website might have made a mistake when creating a link to your website. Another reason might be if you update a URL and there are still links pointing to the old URL.