Analysis on the mistaken use of canonical label

Do SEO understand, through the rel=canonical set, can let search engine know you want to index version, and this label Google, Bing, yahoo support. And this label, the main purpose is to avoid the same page is repeated index, the following small head bidding price adjustment software to see the use of canonical tags easy to produce misunderstanding:

(1) Under the same article multi-page structure, the rel=canonical is located on the first page.

Many of the web structure of a long article, split into more than one article.

And all the pages are added rel=canonical point to the first page of the article, so that the search engine ignores the first page of the index article, so it is a very fatal error.

When a long article is divided into multiple pages, it is not used but rather a label

(2) The absolute URL is written as a relative URL.

Although rel=canonical can accept a relative or absolute URL, many people write an absolute URL link as a relative form of the URL.

The following figure, the first of the writing is wrong, will let search engine thought is xiaonaodai.com directory, rather than xiaonaodai.com as a Web site. You should use the 23rd way to be correct.

(3) repeatedly explained Rel=canonical.

Some Web pages use templates, plus plug-ins, so you often don't notice a few rel=canonical. If a page has multiple canonical instructions pointing to a different URL, the search engine can not determine which is the correct, so the final all canonical instructions will be ignored.

(4) Set the rel=canonical of the category or the entry page as the featured page.

Remember one thing, rel=canonical is designed to avoid repeated indexing of the same page. If you set the rel=canonical description on the category page to point to another page, the category page will not be indexed.

(5) Set the rel=canonical in the body.

This description is to be placed inside, if you put it in, the search engine will not be processed.

So you should take note of the following points when dealing with this description:

-The rel=canonical description is to have the search engine not index the page where the description is placed, but to the page that the index points to.
-You must be sure that the page you are pointing to is present, otherwise it will cause indexing errors.
-You must be sure that the page you are pointing to is allowed to be indexed by the search engine before it can be processed.
-You have to be sure that the description points to the page that you want to appear on the search results page.
-You must be sure that the instructions are placed within the label.
-You have to be sure not to have more than one description on a page.
-You must be sure that the page will not be indexed after it points to a different page.

The main purpose of rel=canonical is to avoid duplicate indexing of the same http://www.aliyun.com/zixun/aggregation/18427.html "> Web content, whose purpose is somewhat similar to the 301 steering but not quite the same, Because the reader does not see the change after the description, it often ignores its importance. But the correct use of this tag, you can make your Web site by the search engine correctly processing your index, but also let search engines do not waste time to index the same content.

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