How to normalize URLs

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Website normalization has always been a problem for webmasters and search engines. It is estimated that 10%-30% of the URL is the same content but the URL is not the same as the non-normalized web site. This creates several problems. Like what:

For webmaster, multiple URLs exist scattered page weight, not conducive to ranking.

For search engines, wasting resources, wasting bandwidth.

Search engines find multiple URLs with the same content, do not punish, and try to find the URL that should be normalized. But the program is only a program, may be wrong, picked out may not be the webmaster want the normalized URL.

Website site normalization problem too serious, may also affect included. A weight is not very high domain name, can be included in the total number of pages is limited. Search engines spend resources on irregular URLs, and the resources left to truly different content are reduced.

To solve the problem of URL normalization, there are also many options, such as: In Google Administrator tool set with 3W and no 3W, which is the normalized version of the use of 301 turn, the non-normalized URL all to the normalized URL, to ensure that the use of the CMS system only produces a standardized web site, Make sure that all internal links on the site point to a normalized URL, and that all of the site maps that are submitted to the search engine are assigned a normalized URL, but these methods are limited.

Google administrator tools do not apply to other search engines, some owners for some reason do not 301 turn, the CMS system in most cases is not under their control, the internal link itself can control, but the others linked to their website on the uncontrolled, in short, although there are solutions alternative, But web site normalization so far is a big problem.

A few days ago Google, Yahoo, Microsoft jointly released a new tag canonical tag, to solve the problem of Web site normalization.

To put it simply, add such a piece of code to the header of the HTML file:

The meaning is that the website's canonical URL should be:

Http://www.example.com/product.php?item=swedish-fish

The following URLs can be added to this code:

Http://www.example.com/product.php?item=swedish-fish&category=gummy-candy

http://www.example.com/product.php?item=swedish-fish&trackingid=1234&sessionid=5678

The truly normalized URLs for these URLs are:

Http://www.example.com/product.php?item=swedish-fish

Simply put, this tag is quite a page within the 301 turn. The difference is that the user is not turned, or stay on the same Web site, and the search engine will consider it as a 301-turn processing, that is, the weight of the page links are concentrated in the code specified in the canonical URL.

In addition there are a few details stationmaster need to note:

This tag is just a suggestion or hint, not an instruction, and it's not a directive like a robots file. So the search engine will largely consider this code, but not 100%, but also consider other circumstances to judge the normalized web site. It also prevents webmasters from possibly mistaking URLs.

This code can use either an absolute address or a relative address. It is usually recommended to use absolute address comparison insurance. The content on the specified normalized web site can be somewhat different from other non-standard web site content that uses this code, not necessarily exactly the same. For example, there are many e-commerce sites by price, color, and size of the order, generated URLs are all different, but the content is roughly the same, only a small difference, you can use this tag.

The specified normalized URL can be a nonexistent page, return 404, or it can be a page that has not been included. But it's not recommended. This label applies to the same domain name, including the level two domain name. However, it does not apply to different domain names to prevent hijacking. Do not put this label as life-saving grass, the first still have to do a good job of the site structure, as far as possible to avoid the problem of URL normalization. This is only the last resort.

Sensitive people can probably see the opportunity to build a lot of external links from this new standard. Finally, this standard by the 3 search engine Google, Yahoo, Microsoft at the same time support, why did not mention Baidu? Remember to see the report, from the search volume, Baidu is the world's second largest search engine, why not take us to play together?

Author: Zac@seo Every day

Original download: Point stone interactive search Engine Optimization Blog