Several important reasons why Baidu’s indexing of websites suddenly dropped
The number of website indexes is the number of pages selected by search engines after crawling and filtering! Site content pages need to be crawled and filtered by search engines before they can be displayed to users in search results. The process of pages filtering through the system and being used as search candidate results is called indexing. The index volume tool also supports the site to customize the directories it wants to focus on and view the index volume under a certain directory rule; the index volume is not equal to the traffic, and the index volume will have regular data fluctuations, which is normal.
How many pages in the site can be used as search candidate results is the index volume of a website. Then the important factors that affect the index volume of the website can be summarized into these categories:: The site’s popularity with search engines decreases, DNS Problems with the server,Web template related,website content data URL Standardity of links,Website source codeRelated.
BaiduOne of the factors that contributes to the decline in indexing of a website： DNS Problems with the server
right DNS In terms of: Choose reliable dns Service; communication emphasizes stability against spiders; prevention dns Parse to abnormal ip; Websites that prevent parsing ip frequent changes;
For the server: Poor accessibility, blocked Baidu ip or ua、 Anti-brush pressure value setting.
BaiduThe second reason for the decline in indexing of the website: Web template related
Restrictions on search engines in the main content area of the website;
Enables search engine unfriendly technologies;
Whether the website is responsive.
The third reason why Baidu’s indexing of websites has declined: Site popularity with search engines decreases
The main reasons are these：
Website content related: The quality of website content decreases, the frequency of article updates decreases, the effectiveness of time-sensitive articles, and the appearance of bad information in some areas of the webpage; etc.;
Violation penalty algorithm: Webmaster Tools news and Baidu web search updates are required. Follow the official announcement instructions to rectify the site, provide feedback, and wait for the algorithm update.
Whether the temporary return status code of 200 is used in the website page (Need to make a permanent 301 redirect );Platforms external to the website use on-site data; the website is mirrored (Users use the domain name of other hosting entities or url Direct access to your own content )，focus onDomain name resolutionSecurity and server security; bind the only resolvable domain name or the only accessible url; Use absolute addresses for links in page content.
Baidu pairFive factors causing a decline in website indexing：Website source codeRelated
Source code errors are serious, such as coding errors, label usage errors, etc.; source code changes are serious, and the spider "collects" the data and then re-observes and analyzes it; certain types of url down TD(Web page title、description)Changes, such as a large change ratio or a large amount of changed pages, will cause the page to go through the index database construction process again after the page is changed. If the page quality does not meet the index database construction standards, it will disappear online.
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