404The role of the page

1to avoid dead links

Website Settings404status response, it is known that the URL has expired, and the web page represented by the URL 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 affecting the website's inclusion due to dead links.404When the server returns the "

2to enhance user experience

404page, usually when a user accesses a non-existent or deleted page on the website, the server returns404Error page, informing the browser that the requested page does not exist or the link is incorrect, while guiding the user to use other pages on the website instead of closing the window and leaving, thus 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, telling 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, leading to 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.

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.