Need 301 redirect after the website goes online

Four different situations of 301 redirection

1. Some websites can use the website with or without www for surprise visit, such as //www.baidu.com and //baidu.com It will point to one website at the same time, and search engines will think that these two websites are two, and if the URLs are different, there will be different listings and rankings, leading to the weight and traffic can not be concentrated together. This is why we want to direct the weight and traffic of websites without www to standard websites with www. 301 redirection or permanent redirection is to achieve this effect.

2. When the website is updated or revised, the page name, location and path of the website may have changed because of the update or revision, or the file has been deleted, and the search engine may not find the change or go to the original location to search for the file. If the search engine spider cannot find the file in the original location, it will automatically think that there is a dead link, which is very unfavorable for SEO optimization. In order to avoid this situation, you need to manually 301 redirect to the new address of the web page. If we can't confirm the new page to be replaced, in this case, we can redirect to the website's home page to avoid errors, complete centralization and diversion, and improve the user experience and search engine friendliness. If you have many songs with different domain names, for example COM、. CN、. NET, you can redirect these domain names 301 to the main domain name. You can cancel 301 redirect only after you confirm that the new website link has been updated on the search engine.

3. Because of the program, many URLs correspond to the same or similar pages, and 301 redirection is used for centralization.

4. If you want to move a website from one domain name to another, it is also necessary to use 301 redirection, which can prevent the loss of traffic and the loss of weight. 301 redirection can be implemented in different ways according to different situations.

Precautions for 301 Redirection

When the 301 redirect is completed, the original page will jump to the new page. Most people do not go back to pay attention to whether the HTTP status of 301 is returned successfully. That is to say, at this time, it is very likely that some websites have no 301 redirection or 404 error status codes, so no matter what the situation, 301 redirection can not achieve the effect.

The significance of 301 redirection lies in the optimization of search engines. According to the HTTP protocol, it sends a standard 301 jump to the browser and the search engine spider, so as to redirect the weight and traffic of the past pages to the new address, which can give the browser a better access experience and obtain a better weight and ranking in the search engines.