How Search Crawler Works & What is SEO?

How Search Crawler Works

The term SEO has probably been used in a conversation about digital marketing strategies at some point. You might already be aware of the significance of SEO and how it relates to search engines. This blog will explain how search engine crawlers work on the web.

What is SEO?

What is SEO

“Search engine optimization” is known also as SEO. It simply refers to the process of changing your website to make it more visible. When users search for goods or services related to your business on search engines like Google, Bing, and others. The more visible your pages are in search engine results, the more likely it is that you’ll get noticed and draw both new and returning customers to your company.

How does SEO Work?

How does SEO Work

Bots and crawlers are used by search engines like Google and Bing to crawl web pages by moving between websites, gathering data about them, and indexing them. Just imagine the index as a huge library where a librarian can bring up a specific book (or web page) to help you find it at the moment.

Algorithms that examine pages in the index while accounting for hundreds of ranking factors or signals determine the order in which pages should appear in search results for a given query.

What is Search Engine Crawling?

What is Search Engine Crawling

Search engine crawling is the process of using web crawlers (bots or spiders) to visit, download, and extract links from a page in order to find other pages.

The search engine periodically crawls pages it is aware of in order to check if the content has changed since the last time. After a page crawls, if a search engine notice changes, it will update its index to reflect the changes.

How Does Search Crawling Work?

How Does Search Crawling Work

Web crawlers review and categorise the web pages after starting with a list of known URLs. The robots.txt file on each webpage, which contains the guidelines for bots that access the website, is examined by the web crawler before each page is examined. These guidelines specify the links that may be followed as well as the pages that may be crawled.

The crawler finds any links that appear and follows them to the next webpage. The crawler is more specific about what order it should follow based on defined policies that determine which hyperlinks it follows. Examples of defined policies include

  • Domain authority
  • The number of pages that link to a specific page.
  • The number of page views.

These factors suggest that a page may contain more significant data for indexing.

When a crawler is on a page, it stores the copy and the descriptive information known as meta tags and then indexes it so a search engine can look for keywords. The process then determines whether the page will appear in search results for a query and, if it will, returns a list of important indexed web pages.

Examples of Search Engine Crawlers

Most well-known search engines have their own crawlers that collect data about web pages using a particular algorithm. The following are some instances of search engine crawlers used for search engine indexing

  • The Amazon search engine crawler is called Amazonbot.
  • The Bing crawler from Microsoft is called Bingbot.
  • The search engine DuckDuckGo’s crawler is called DuckDuckBot.
  • The search engine’s crawler is called Googlebot.
  • The crawler for Yahoo’s search engine is called Yahoo Slurp.
  • The crawler for the Yandex search engine is called Yandex Bot.

Even if a website owner forgets to submit a site map, a search engine crawler can still find the website by following links from other indexed websites that link to it.

How crawlers are important in SEO?

How crawlers are important in SEO

SEO is the process of making changes to a website to improve its visibility when users search for goods or services. A website’s search engine results page (SERP) rankings will be less or it won’t appear in organic search results if it has crawl ability issues that make it difficult or impossible to crawl. This is why it’s crucial to check for broken links and other errors on web pages and to permit web crawler bots access to websites rather than preventing it.


Crawlers for search engines are responsible for searching for and indexing online content. They function by classifying and separating web pages so that search engines can understand what each page is about. One technique of technical SEO that can significantly boost your website’s performance is understanding the search engine crawlers.