404The role of the page

1Avoid dead links

Website Settings404After the page, if the website appears dead links, the search engine spider crawling this kind of URL gets404When the URL is known to be invalid, the web page is no longer indexed, and feedback is sent to the data center to delete the web page represented by the URL from the index database. Avoid dead links affecting the website's inclusion.

2Improve user experience

404Page usually means that the user has visited a page that does not exist or has been deleted on the website, and the server returns404Error page, 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, eliminating the user's frustration.

3Avoid a decrease in trust

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

4Avoid being penalized

Some websites due to some incorrect server configurations, causing the return to be200 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.