What makes Google unique and resembles other search engines and its size is its proprietary website-ranking algorithm. 
Previously, this ranking algorithm could be calculated with a single metric called Google PageRank or Google PR. Named after one of Google's founders, Larry Page, Google PR symbolized the SEO initiative. Google Page Rank is no longer valid due to the algorithm's growing sophistication and artificial intelligence refinements. However, the assumption of being able to evaluate your website objectively is still lovely for those trying to enhance rankings. We want to know how our website compares to those we're competing against at the end of the day. We also want to make sure that we do everything we can to beat Google at its own rankings game. Fortunately for us, there are several ways to do so. 
To improve rankings, you need to see how your website measures up. There are various SEO tools and aids that can help you do this...