Use Google Search Console to track your website. Google recommends logging in about once a month to see if there are any surprising errors or dips in traffic. This site also provides a variety of indexing-related tools. For example, you can confirm that Google can access your pages ("Fetch as Google"), notify Google of a domain change ("Change of Address"), and issue urgent blocks on content you need to take off your site ("Remove URLs").
If you have a lot of errors on your site for Google, Google will start crawling slowly too. To speed up the crawl process, fix those errors. Simply 301 redirect those erroring pages to proper URLs on your site. If you don’t know where to find those errors: log into Google Search Console. If you have access to your site’s access logs, you can also look at those, preferably with a tool like Screaming Frog’s Log file analyzer. To prevent your site from being crawled slowly, it’s important that you regularly look at your site’s errors and fix them. We have a more extensive article on fixing 404 errors to help with that.
Web indexing (or Internet indexing) refers to methods for indexing the contents of a website or of the Internet as a whole. Individual websites or intranets may use a back-of-the-book index, while search engines usually use keywords and metadata to provide a more useful vocabulary for Internet or onsite searching. With the increase in the number of periodicals that have articles online, web indexing is also becoming important for periodical websites.