Crawling and indexing are two common SEO terms. These are two distinct actions search engines like Google can perform that helps google to understand a site’s structure and architecture. By crawling a site, it can analyze the content and judge if the site’s content is relevant or not.
When Google visits your website for tracking purposes. This process is done by Google’s Spider crawler.
After crawling has been done, the results get put into Google’s index.
Crawling and indexing issues may occur for many reasons:
If your site or page is not being indexed, the most common culprit is the meta robots tag being used on a page or the improper use of disallow in the robots.txt file.
If a page or directory on the site is disallowed, it will lead to having issues in indexing.
Sitemaps provide search engines with a listing of pages on your website. If some protocols are being tampered, then the link won’t get that much priority in response crawler will ignore that particular link.
If a particular link has canonical issue, then it will create a problem in indexing that particular link.
If a particular link has a no-index tag in it, then it will create a problem in indexing. The site has to be indexed in order to be ranked. If search engines can’t find or read your content, then they can’t evaluate and rank it. Prioritize checking your site’s indexability.