404The role of the page

1To avoid dead links

Website Settings404After the page, if the website appears dead links, search engine spiders crawling these URLs will get the status of404When the URL has expired, it is known that the web page will no longer be indexed, and feedback will be given 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 enhance user experience

404Page usually occurs when a user visits a page that does not exist or has been deleted on the website, and the server returns404Error pages, inform the browser that the requested page does not exist or the link is incorrect, and guide users to use other pages on 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 code to tell search engines to abandon the indexing of this link. While if the website returns200 or302Status code, search engines will create an index for this link, resulting in a large number of different links pointing to the same web content. As a result, search engines' trust in the website is greatly reduced. Many websites have this problem:404The page returns200 or302Status code instead of404Status code.

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, causing search engines to believe that this page is a valid page and thus crawl it. If404Too many pages can result in a large number of duplicate pages, which may be penalized by search engines as cheating.