With www compared with the WWW is not included why less

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We do Web site optimization, often encounter with the WWW site with less than the www. Some site rankings will also appear like this. In fact, this situation is not surprising. There are several main reasons for this:

1, we all know the site's first-level domain name is relatively high weight. Without the WWW is the first level domain name. With the WWW is a class two domain name. So when the page is included, Baidu is usually first included without the www. Just like my friend of a new station www.***.com, just apply for the domain name: Yesterday just submitted Baidu, we through the map to see included:

From the above can be seen, although only submitted to Baidu one day, not with the WWW site has been included. And with the WWW is not included.

2, the second reason is that there are multiple level two domain name problems

The first one we said, do not take the WWW is a level domain name. If your site has another level two domain name. Then, when the query is included, it is possible to check with WWW and all the domain names without www. If your query with WWW, then the query is only with the WWW included, excluding other two-level domain names.

3, search engine preferred domain name understanding

This question can be understood in this way. We do site domain name resolution, usually with the WWW and without the WWW simultaneous resolution. Description has these two domain names at the same time can visit our website homepage. If your promotion in the future is not with the main www: for example, the chain is not with the WWW-oriented, search engines may think that your site is not with the WWW as the preferred domain name. This is also a result of not with the WWW more than a collection of reasons.

How to avoid the above situation?

1, to do the site before parsing the domain name, only to resolve with the WWW, so that our site is equivalent to only one domain name. That's the one with www.

2, do 301 redirect. is to take the redirect without www to the www. Note that it's best to do Total Station 301 redirect

3, the inner chain is an absolute address. This is for the whole station as far as possible not to appear without the WWW url link.

4, the promotion of the main with the www. For example, we do outside the chain, only to do with the outside chain of www. This can promote the search engine with WWW as the preferred web site.

Reprint please indicate the source: Jinan SEO www.heheseo.com