404The role of the page

1To avoid dead links

Website Settings404After the page, if the website appears dead links, the search engine spider crawling such websites gets404”status response, knowing that the URL has expired, no longer indexes the web page, and feeds back to the data center to delete the web page represented by the URL from the index database. Avoid affecting the inclusion of the website due to dead links.

2To improve user experience

404Page usually refers to the user accessing a non-existent or deleted page on the website, and the server returns404Error page, telling the browser that the requested page does not exist or the link is incorrect, while guiding users to use other pages of the website instead of closing the window and leaving, eliminating the user's frustration.

3To avoid a decrease in trust

Search engines identify the status of web pages through HTTP status codes. When a search engine receives an erroneous link, the website should return404Status codes to tell the search engine to abandon the index of this link. While if it returns200 or302Status codes, search engines will build an index for this link, resulting in a large number of different links pointing to the same page content. As a result, the search engine's trust in the website is greatly reduced. Many websites have this problem:404The page returns200 or302Status codes instead of404Status codes.

4To avoid being penalized

Some websites due to the application of some incorrect server configurations, resulting in the return of200 status code or302Status codes, although these status codes do not affect users visiting the website, they may mislead search engines and make search engines think that this page is a valid page, thus crawling it. If404Too many pages can result in a large number of duplicate pages, which may be penalized by search engines as cheating.