Google advance search operators are useful search queries that can help you determine your competitive environment and assess the level and degree of work that an SEO campaign requires. Here are the Google search operators most commonly used by SEOs:

Site:www.website.com will show you the number of pages in your website that are indexed by Google.

If you find a large discrepancy (> 20%) between the number of web pages indexed and the number of pages you have published, you will need to identify and resolve the issues that may be blocking web crawlers.