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How Search Engine Work?

What is search engine ?

Search Engine is a Web based Tool or Software,Which helps internet users to search information on world Wide Web.

Like- Google, Yahoo, Bing, etc are the popular search engines! that finds the data and information from the keyword and phrases to search and shows on your result page.

What is Search Engine?

for example, suppose you can search on Google β€œwhat is a search engine?” so Google will match your search keyword from all the databases and websites available on the internet. And all the data related to it will show according to its search ranking on your result page.

When the user type word in search bar on google or any other search engine that is called keyword.

How Search engine works

A search engine have three primary functions to search the search by results.

And these 3 steps are as follows:

  1. Crawling
  2. Indexing
  3. Ranking and Retrieval
Search engines work by crawling hundreds of billions of pages using their own web crawlers.
Search engines work by crawling hundreds of billions of pages using their own web crawlers.


Crawling is the first step to search a web page. There are automatic spiders, bots, or crawlers for any search Engine, They can collect every pages and content where our keyword matched.

According to google their crawlers and bots are collects 100 to 1000 information pages in 1 second. when bots or crawlers get a new page they send it to the Back-end processing.


Indexing comes after the process of crawling. In this process after crawling, collects all the information of web pages and database and list it by the ranking, this process is called Indexing.

Ranking and Retrieval

Ranking and Retrieval is the last and most important step for a search engine. Database and web pages collected as indexing and they are again ranked by the basis of many of their properties like Popularity, Content age, and Content keyword.

There are many algorithms for ranking and retrieval in every search engine. Because of this, our search results are correct and accurate. And whenever we do a search, we get the best result at first of the search.

Types of search engine

There are 4 types of search engine.

  1. Crawler-Based Search Engine
  2. Web Directories
  3. Hybrid Search Engines
  4. Meta Search Engines

Example of search engine

  • Google
  • Yahoo!
  • Bing
  • DuckDuckGo
  • Yandex
  • Ask


Google, Yahoo, etc all these search engines are actually software programs, After searching whatever, the search engine gives all the information available online related to it very quickly.

All search engines work like this – Collect information, rank it by analyzing it and show results to the user.

Priya Chauhan
Priya Chauhanhttps://rkrknowledge.com/
Hi πŸ‘‹, Myself Priya Chauhan from India. Content Editor | Coder | PHP Developer | UI Designer. I try to learn something new every day and share that knowledge with my friends.


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