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Google PageRank Algorithm In A Nutshell

Google PageRank Algorithm In A Nutshell

This chapter will help the reader understand the Google PageRank Algorithm In A Nutshell – which means in a simple and fewest possible words. The aim of this chapter is to explain the PageRank algorithm with an example as a ranking factor for websites and will not get into the detail of the computer algorithm as it is beyond the scope of this chapter.

Google PageRank Algorithm In A Nutshell


Also, it is not necessary for an SEO professional to understand the programming implementation of the algorithm. To understand the implementation of Google’s PageRank algorithm programmatically and mathematically, you must visit websites that share the research papers on this topic. This blog post gives a simple explanation of the google page rank algorithm.


Topics Covered In This Chapter 



What Led To The Birth Of PageRank Algorithm

Having said that, let us first understand how search engines ranked websites even before the PageRank algorithm was introduced into search engine algorithms.

Earlier, search engines used to rank web pages for a particular search query (or keywords) based on “Keyword Matching”. In other words, based on the matching keywords present on the webpage.

For example, if a user typed “Best Digital Marketing Training Institute in India” on the Google query box, the search engine pulled out all the web pages from its database that contained the keyword “Best Digital Marketing Training Institute in India” and returned the results on its SERPs to users.

Other than keywords, web pages were also ranked based on the domain age of the website and several other parameters.

When website owners understood this search engine trick, they started stuffing keywords on web pages in order to trick search engines to rank their websites higher on SERPs.

An example of keyword stuffing is the phrase – “Digital Marketing Training is the best Digital Marketing Training and undergoing digital marketing training is the best decision”. In this sentence, you can notice that the keyword – “Digital Marketing Training” is stuffed thrice unnaturally in the same sentence. Earlier, search engines used to rank websites with such keyword(s) stuffed content.

This became a menace to Google search engine as it could not figure out the high-quality web pages among so many sites.  Added to this, thousands and thousands of websites started making its way into the world wide web on a yearly basis. Now the count has increased drastically. This led to the birth of the PageRank Algorithm.


Google PageRank Algorithm Explained In A Nutshell

PageRank is an algorithm named after the co-founder of Google – Larry Page. This algorithm is used by Google’s search engine to rank websites in their SERPs based on the importance of website pages. PageRank algorithm is the best-known algorithm that changed the way search engines looked at web pages.

Google PageRank Algorithm Explained With Example

The importance of a particular website or webpage is determined by the number of quality links that it gets from other websites. Such links are also called as Backlinks.  More the number of quality backlinks to a website or webpage, more importance is placed on such a website or webpage by search engines. This is because, the search algorithm assumes, if a particular website is deemed important by the users, it is likely to receive more links from other websites. Everyone likes to refer to a website that is rich in information – Wikipedia for example. 

NOTE: In the above figure, the circles denoted by ‘A’, ‘B’, ‘C’, ‘D’, ‘E’ and ‘F’ are websites and the incoming arrow marks indicate the backlinks from other websites.

The importance is measured using a unit called Google PR(short for PageRank). Google Page Rank is a measure of a web page’s importance on a scale of 0 to 10, where 0 is the lowest and 10 is the highest in terms of importance.

Once a webpage or website is considered important by analyzing its incoming links, the PageRank algorithm gives a rating of its importance through Google PR. Google PR of 6 and above is considered to be a highly trusted site by Google search engine. There are various free tools available on the internet to check Google PR of a particular website.

It is to be understood very clearly that, the importance of the webpage is not considered only based on the number of links that it attracts, but, but also on the quality of the links that it attracts.

The importance of a website or webpage is considered high when it receives links from other websites or web pages with higher Google PR. Getting a single link from a website with higher Google PR is worth equal to getting 1000 links from a website with lower Google PR or Google PR of zero. Therefore the importance of a website considered depends on the quality of the links that it receives.

There is another important factor that Google PageRank algorithm considers while placing importance on a website or webpage. It is the relevancy of the external link received.

For example, assume the website ‘A’ is all about nutritional facts. The external link that points to ‘A’ will be considered as more valuable if the link is from another nutrition-related website or webpage. If website ‘A’ receives links from other sites related to some other niche other than nutrition, it is considered as less valid or invalid. 

Among hundreds of factors that Google ranking algorithm considers for ranking websites, quality backlinks are said to be the most important one. So put your effort in developing a website or webpage that is rich in information, so that, it can attract external backlinks naturally.

Congratulations! You are done with the fifth chapter on “Google PageRank Algorithm In A Nutshell”. Hope you enjoyed the reading.


All the best for your next chapter on “Black Hat SEO Techniques and Google Penalty”. The next chapter discusses the various black hat techniques used by spammers in order to illegally rank their sites higher on the SERPS and how Google penalizes such websites through penalties.

Feel free to comment below if this blog post was useful or not. If yes, please do me a favor by sharing it with others who might benefit.

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Subhash.K.U is a Professional Programmer turned Digital Marketing Enthusiast. He is the most sought marketing consultants for small and medium scale businesses. He founded Subhash Digital Academy to teach professional digital marketing skills to students, entrepreneurs, and working professionals. He holds a Bachelor’s degree in Electrical Engineering and is an Oracle Certified Programmer. He also holds certificates of Google AdWords, Facebook Blueprint and Hubspot Marketing. He is the co-author of the best selling book – Cracking The C, C++ and Java Interview published by McGraw Hill. He is now penning another book on the subject of marketing and entrepreneurship.

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