404The role of the page

1To avoid dead links

Website Settings404After the page, if the website appears dead links, search engine spiders crawling such URLs will receive the status of “404”Status Response”, it is known that the URL has expired, and the web page will no longer be indexed, and feedback will be sent 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

404When the user visits a page that does not exist or has been deleted on the website, the server returns404Error pages, inform the browser that the requested page does not exist or the link is incorrect, and guide the user to use other pages on the website instead of closing the window and leaving, to eliminate the user's frustration.

3To avoid a drop in trust

Search engines identify the status of web pages through HTTP status codes. When the search engine gets an incorrect link, the website should return404Status codes, telling the search engine to give up indexing this link. And if the server returns200 or302Status codes, search engines will create an index for this link, which leads to 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 may return200 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 for cheating.