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The 404 page is a necessary component of any website, playing a crucial role in user experience and SEO optimization. A 404 error occurs when a user attempts to access a page that does not exist or has been deleted on the website. If the site owner fails to set up a custom 404 page, broken links may appear, which can hinder search engine crawling and indexing.

Origin of the 404 Not Found Error

It is said that before the third technological revolution, the internet resembled a large central database located in room 404. At that time, all requests were handled manually. If the requested file could not be found in the database, or if the user entered an incorrect file number, they would receive a response: "room 404: file not found." After the internet emerged, people gradually adopted "404" as the standard error code for indicating that a server cannot find a requested file. However, in reality, there is no such room 404.

Two Major Benefits of Setting Up a 404 Page

  • Guide users not to leave the site, improving user experience.
  • Prevent dead links from appearing on the website.

Learn more about HTTP Status Codes.

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