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 receive the status of404When the server returns the 'status response', it is known that the URL has expired, and 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.

2To improve user experience

404Pages usually occur when users access non-existent or deleted pages on the website, and the server returns404Error pages, informing the browser that the requested page does not exist or the link is incorrect, and guiding users to use other pages on the website instead of closing the window and leaving, eliminating the user's frustration.

3To avoid a drop in trust

Search engines identify the status of web pages through HTTP status codes. When a search engine gets an erroneous link, the website should return404Status code, to tell the search engine to abandon the indexing of this link. And if the return200 or302Status code, the search engine 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 returns the200 or302Status codes instead of404Status codes.

4To avoid 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 can mislead search engines and make search engines think that this page is a valid page, thereby crawling it. If404Too many pages can result in a large number of duplicate pages, which may be penalized by search engines as cheating.