Description:

It is impossible to know how many pages Google correctly indexed on the site. The search engine does not maintain a database by URLs.

The approximate number of pages in the search results will be shown by the site operator, which we rely on. The number can be distorted by pages that are banned from indexing in robots.txt, but hit the search results because of external links to them.

The “Indexing Status” section in Google Search Console will show a slightly more correct number, but this data can also be distorted by the filters’ application.

For successful indexing of the page by search bots, the HTTP response code of the server must be 200.

Additional Information:

• [Checking the server response of the internal pages of the site](/tools/http-response/
• List of status codes

Description:

Technically, domains with www and without www are two different resources; search engines index and rank them separately, and links will have different weights. This can lead to:

• Decrease in search results
• Filter, because a search engine may mistake one site for a duplicate of another;
• Problems with authorization on the site and other functionality that uses cookies;

The problem is solved by a 301 redirect and an indication of the main mirror to the search engines. From the website promotion point of view, a domain without www is better, because it is not a third-level domain, and its length will always be shorter.

Download speed directly affects behavioral factors: the faster the download, the fewer bounces. The Google robot visits slow sites less often. This affects the effectiveness of promotion, such sites are rarely indexed. Loading speed is one of the main factors in Google ranking.