About the seo problem of the 404 error page

Whether the website needs to have a 404 page, whether it needs to do 404, these basic 404 error topics are all seo practitioners must consider~!

You may ask:

Does the 404 error page have a negative impact on SEO ranking?

Answer: It is very obvious that it directly affects the stability of website keyword rankings and even the process of optimization of the entire site.

for example:  

① The 404 error causes the page link to be broken, and Baidu crawler cannot access it normally.

②404 error, because the link cannot be crawled, there is no way to talk about indexing and ranking.

③A large number of 404 errors cause the accessibility of the entire site to be checked, which lasts for a long time, and it is very easy to downgrade the site's rights.

Does the 404 error affect crawling, indexing, and ranking?

So, what are the reasons for the 404 error?

According to the description of a large number of SEO tutorials in the past, the following will be explained:

1. Old link

If you try to review some well-known old-brand websites, you will find that a large number of websites will have certain revision problems every certain period. Then, in the long-term revision process, if it is not handled properly, it will inevitably produce some wrong links. As a result, the URL cannot be accessed normally.

Although, to some extent, it only leads to a poor user experience on the page, such as: unable to open old content.

But for search engines, its impact is very serious.