The impact of dead links on SEO and how to solve them

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What is a dead link?

When we browse the site, must have encountered the "unable to find the page" experience, that is, a seemingly normal page links, after the Click can not open the corresponding page. This link is called a dead link. In short, it is a normal operation of the site there is a page can not open.

Dead link is the Web site construction of the professional terminology, simply, dead link refers to the original can be normal access, and later failed the invalid link. From the user's point of view, dead link and Error link performance is the same, so generally we do not need to distinguish between dead link and wrong link.

A dead link can occur in the following situations:

Dynamic links will become dead links under conditions that the database no longer supports.

A file or Web page has moved its location, causing the link to it to become a dead link.

Web content updated and replaced with other links, the original link into a dead link.

Site Server Setup error.

Two, dead link to SEO have what effect?

As SEO personnel, we must do our best to avoid the site dead link! It should be certain that dead links are not the main reason for your site's ranking, but they also have an impact on site optimization rankings.

First of all, a site if there are a large number of dead links, click Visit repeatedly blocked, the user experience is bound to be very poor, will greatly damage the overall image of the site, seriously affect the authority of the site.

Second, search engine spiders crawl through links if you encounter too many links can not be reached, the number of pages included will be reduced, which will affect the site in the search engine weight. It can be said that the dead link is the search engine to assess whether your site is an important indicator of eligibility, dead links too much will directly reduce the search engine on the site's authoritative and friendly judgments, while the site rankings cause harm.

Third, SEO should be how to deal with dead links?

According to my experience, there are the following points:

1, regularly check whether the site has a dead link. In order to establish a good website image, to avoid invalid links, when we completed the design of a website, we must carefully check whether there is a failure link, in order to modify in a timely manner. After uploading, we can also use some of the SEO tools to check dead links for review.

2, encounter the site appears dead link, want the first time delete dead link or repair dead link, make the website structure smoother.

3, set up 404 pages, guide the click of the dead link. When a dead link sends a request, the server returns a 404 error page. The purpose of the 404 page is to tell the viewer that the requested page does not exist or link incorrectly, and that the user is directed to use other pages of the site instead of closing the window to leave.

Set up 404 pages must pay attention to meet the SEO requirements. Many sites have a problem, you can 404 page return is 200 or 302 status code instead of 404 status Code, which is very fatal. Search engines use HTTP status codes to identify the status of Web pages. When a search engine gets a bad link, the site should return a 404 status code, telling the search engine to discard the index on the link. If you return a 200 or 302 status code, the search engine will index the link, which leads to a large number of different links pointing to the same page content. As a result, search engines have significantly reduced their trust in the site. Therefore, after the establishment of 404 pages, be sure to use the SEO tool to check, return the status code is correct. At the same time also pay attention not to the 404 error directly to the homepage of the website, which may lead to the home page is not included.

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