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Playwright Authentication

📅 2026-06-23 | 📂 Playwright
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The 404 page is an essential part of any website, carrying the responsibility for user experience and SEO optimization. A 404 error occurs when a user visits a page that doesn't exist or has been deleted on the site, and the server returns a 404 status code. If the webmaster hasn't set up a custom 404 page, dead links may appear, which can negatively impact search engine indexing when crawlers encounter such URLs.

Origin of 404 Not Found

Legend has it that before the Third Industrial Revolution, the internet was essentially one large central database located in Room 404. At that time, all requests were handled manually by staff. If the requested file wasn't found in the database—either because it didn't exist or due to incorrect numbering—the user would receive a message saying: "Room 404: File Not Found." After the rise of the modern internet, people adopted 404 as the standard error code for missing files on servers. Of course, historical verification shows that the legendary Room 404 never actually existed.

Two Major Benefits of Setting Up a 404 Page

  • Guide users not to close the website, enhancing user experience.
  • Prevent the appearance of dead links on your website.

See more about HTTP Status Codes Introduction.

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