How does the Search Engine (Google) Work to Rank the Content?

How does the Search Engine (Google) Work to Rank the Content?
Search engine work
How search engine works?

Billions of queries are asked in the search engine, Google, every day about all kinds of issues, events, solutions, and list goes on and on. Since there are so many searches happing in the search engine, it’s definitely an opportunity to flourish one’s business online.

Get more customers, add value to your business, attain goals in a defined time frame, increase sales and revenue, become a thought leader of your industry, name it SEO can help you achieve it.

But wait, before jump into Google to grow your business, you would want to know, how do search engines like, Google works. As you keep on reading this article you will know the working process of the search engine to rank the content.

Let’s begin with an example,

Suppose, you want to buy a laptop and you made a search on Google. You’ll get thousands or millions of relevant results which you can rely on. But let’s go a bit deeper to understand.

From the day Google got introduce to the world, Google is tracking every happing on the internet to create Index. An index is a library where Google goes hunting for the webpages whenever there is a search.

So when you search for a laptop in Google, you’ll get a lot of search results including the brand of laptop, latest models, price, images of laptops, and many more. When you want to buy a laptop just clicking through random links won’t work. This is when Google ranking comes into play to understand the intent of the search.

Google crawls through the index, assembles possible webpages for the word “Laptop” and then displays them on the screen as a result.  But the question still remains, how does Google decide which page to display in SERPs and which pages to rank?

There are more than 200 ranking factors that Google takes into account to rank the content. Keywords, backlinks, search location being a few of the major factors to rank the content. When you make a search for a laptop from Nepal, you’ll get search results based on your location which includes, cost of a laptop in Nepalese currency and store where you can buy a laptop, with regard to all the ranking factors.

Moreover, the Google algorithm is getting better at scanning all the spam and delivers reliable search results. So when you search for a laptop in Google’s search box, you won’t get a webpage with keyword “laptop” stuff in it. Rather, you’ll get results with you can trust and take your further decision.

This is a brief scenario. Now, let’s go into detail to understand the 3-steps that search engine takes to rank content.

Search Engine: Crawl, Index, and Rank

The aim of a search engine is to present relevant and high-quality content to the searchers. From the above example, you might have got a simple idea about the working mechanism of the search engine. Now let’s talk about it more specifically.

Crawl, index and rank
Crawl, index, and rank


Crawling is how search engines like Google discover the webpage. Google bots start by surfing through the webpages then follow the links on those webpages to find other websites. By moving from one link to another link it discovers the content and adds those contents to the index called Caffeine.

Caffeine is the database where discovered URLs are stored and retrieved whenever there is a relevant search.

But, does Google crawls through every website and webpage on the internet?

Google’s budget helps Google to crawl each domain. Somehow, your page rank determines the crawl budget for your website. Google has a certain amount of resources to crawl, so Google has to be a bit selective to prioritize websites and webpage to get quality information as possible.

Is it possible to control Google crawler?

Yes. Controlling or blocking bot from crawling is possible

If you want a bot to crawl through your website you need to implement the following tips:

  • Let the crawler move through your website easily by defining the logical architect of your website that flows from domain to category to subcategory
  • Use internal links so that crawler can move between the pages
  • Create an XML sitemap (a file that lists the URLs for website) to tell the crawler which page to crawl. There are plugins and tools like Google XML sitemaps to help generate and update the sitemap when you publish new content.

Additionally, you can block bots from finding a certain portion of your website and stop them from storing it on their index. People do this to stop Google to find an old URL with thin content, a special promo code page, a test page, and so on. You can have control over what Google bots crawl and store from your website.

In order to control the crawling, you can use robot.txt to block bots from crawling through the website. You can also use rel=”nofollow” tag on individual links, it just affects that particular link, not the entire website.

Blocking the bot to a certain section of your website will not affect the ranking, it will allow you to allocate the crawl budget to an important webpage.


Once the crawler discovered your page, the next step is to index the webpage. The bot categorizes the content which includes, images, keywords, CSS, and HTML. This help search engine to understand what’s in the content and assist to make a decision about which webpage to display when there is a search.

Additionally, you need to actively monitor how your webpage is being indexed. For this, you can use Index status to check the bot indexing manner.

Index status

Google webmaster has a tool called index status that allows you to know how Google is crawling and indexing your website. Moreover, you can also know how many pages are index and the number of pages Google is choosing not to index.

index status
Index Status

Index status is a graph that shows how Google is responding to your webpage. If you are frequently adding content to your site, and if you see an increase in page indexed then this means that your pages are being crawled and indexed correctly. And if you see a drop in page indexed then this indicates that the crawler is finding difficulty in discovering the page and indexing it. The search engine is not able to correctly access your website.

Removed page from Index

Major reasons why URL might be removed from the index are

  • URL might have “not found” error (4XX) or server error (5XX). This can happen if the page was removed and 301 redirects were not set up. 404 redirects might have been used to remove the page from the index
  • The URL has a noindex meta tag. This can be done to omit the webpage from the index
  • URL has been penalized for violating the search engine’s Webmaster Guideline
  • URL has been blocked from crawling by adding a password


The final step is ranking. The ranking is the process, how Google decides which content to display in SERPs. In other words, ranking is the ordering of the search result on the base of most to least relevant to the search query.

Google finds the relevant webpage to the search query in the index and displays it in the users’ screen accordingly. The algorithm has a number of factors to determine the quality of the webpage to index and rank it.

Goolge ranking
Google ranking

Major ranking factors


Backlinks are the links that direct people to your website from other websites. This is how you can impact the flow of traffic to your website and improve the position in the search engine. The best practice for earning backlinks is by posting guest blogs.


Keywords are one of the important factors how search engine defines the relevancy of the content. It signals Google that your webpage is relevant to the search query. But ensure that you’re not stuffing keywords and try making your content reader-friendly as possible.


In 2015, Google has updated its algorithm to mobile-friendly so that the users can easily get access to the internet and prioritize the website that is optimized for mobile.


If you want your content to appear in SERPs, ensure that your content matches your audiences’ queries. This means when you publish your content ensure that your content is valued by your audience. If the content doesn’t answer the question of your audience then there is no use of publishing that content.

Domain authority

The domain authority defines how well your website will be ranked in SERPs. Domain authority has a ranging score from one to a hundred. A website that has the highest score has a higher chance to get ranked.

In order to give the best search results to users, Google has gone through many minor and major changes. The only reason for the changes is to display the accurate and relevant results to the search queries. So, make sure that your content is user-friendly as well.

Final Thought

Once you have an idea of how does search engine works, you can develop your website that can be a crawl, index, and rank. When you send the right signal to Google, it guarantees that your webpages get appear and ranked in SERPs. Make sure, your webpage serves your audience and search engine find it relevant enough to display in SERPs. If you’re able to work along with Google, your business can succeed in the online market.