YouTip

## 404 NOT FOUND! Sorry, the article you requested was not found!! The 404 page is an essential component of any website, playing a crucial role in user experience and SEO optimization. A 404 page appears when users visit pages that do not exist or have been deleted on the website, resulting in a server 404 error. If the site owner does not set up a proper 404 page, broken links will occur, which hinders search engine indexing when crawlers encounter such URLs. ## Origin of "404 Not Found" It is said that before the Third Industrial Revolution, the internet took the form of a large central database located in Room 404. At that time, all requests were handled manually by staff; if the requested file was not found in the database—or if the user entered an incorrect file number—the system would return the message: "room 404: file not found." Later, as the internet developed, people became accustomed to using "404" as the error code indicating that the server could not find the requested file. Of course, in reality, there is no actual Room 404 behind this legend. ## Two Benefits of Setting Up a 404 Page * Guide users not to leave the website, thereby enhancing user experience. * Prevent broken links on the website. 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