What is web crawler

What is a Web Crawler?

Table of contents:

  • Introduction
  • What is a web crawler?
  • Where are they used?
  • What is their significance in digital marketing?
  • Digital marketing course in Chandigarh
  • Conclusion
  • FAQs


The internet is a vast world that has not been seen completely yet. What we see in our limited searches and web experience, we think the internet is also limited to that. No! Think again!

The internet that we use so dearly every single day is only 5% per cent of the whole internet realm. The dark web constitutes 95% of the rest. This is the part of the web that cannot be accessed easily. You need a specific software solution to enter the deep dark world of the infamous Dark Web. Rumours are that many illegal and unbelievable things take place on the dark web.

However, not everything that we hear about the dark web is true. There are legal businesses taking place on the dark web as well. But because the press only shows the negatives of these things. They have stuck with one stereotype of the dark web. Today, with this article we are going talk about a technology that can inspect and analyse content on the whole internet. It is a time-consuming process but crawlers that do this are highly specific.

We will also learn about how these web crawlers work in real-time. Also, we will try to find the best digital marketing course in Chandigarh. So, let us start with the topic without wasting any more time.

What is a Web Crawler?

The internet is vast, and it’s impossible for all humans combined to meticulously go through every website. This indexing task is necessary to note down each website’s content. This would become a never-ending task in a short span and that’s why, search engines like Google and Bing use web crawlers for this specific purpose.

A web crawler is a program created by search engines to access the entire World Wide Web systematically. This task is enormous and requires automation for efficiency. The most important function of web crawlers is to read and catalogue the content of websites, making it possible for search engines to offer up-to-date search results. These crawlers visit web pages, identify all the links on those pages, and then crawl those links systematically. This process allows them to copy pages and store them in the search engine’s index, creating a snapshot of the website at the time of the visit.

Where Are They Used?

Web crawlers are more than just bots scrolling through the internet and its millions of web pages. They are also an important source of renewing information on the internet. As we all know, there are hundreds of updates that come out daily. They can be related to any topic of human importance but the fact is. We would never get the latest information on time if Web crawlers were not doing their job properly. Here are some other roles where web crawlers have proved to be of use:

Web Archiving:

Web archiving represents a crucial cultural and historical documentation effort, where web crawlers play a pivotal role. In this context, organizations deploy crawlers to systematically capture and preserve web content, safeguarding it against the inevitable digital decay and the transient nature of online content.This preservation serves not only as a historical record but also as a resource for future researchers seeking to understand the evolution of the internet, societal trends, and historical events as they unfolded online.

Market Research:

In the fast-paced world of commerce, market research firms leverage web crawlers to stay abreast of changes in online prices, product listings, and consumer trends. These crawlers meticulously monitor retail websites, aggregating data on pricing, availability, and new product launches. This information is invaluable for businesses looking to understand market dynamics, track competitive movements, and make informed decisions based on real-time data.

Search Engine Optimization (SEO):

Almost all SEO experts use special web crawlers to analyse different websites. They identify areas of Search Engine Optimisation and help in the rankings and reviews of the website on the SERPs. This helps improve their numbers and they might also see an increase in their product’s demand in the market. Different crawlers rank these websites based on different criteria. They can identify broken links, the user-friendliness of the website, the uniqueness of the content present on the website and many other things that can sometimes pass the general human eye. By addressing these issues, businesses can improve their site’s accessibility to both users and crawlers alike, potentially leading to higher traffic and engagement.

Academic Research:

The academic sphere has found a valuable tool in web crawlers for conducting research across a wide array of studies.

Scholars and researchers use crawlers to compile data sets from the internet, which they can then analyze to glean insights into social behavior, communication patterns, and other phenomena. This method of data collection enables the study of online cultures, trends, and the impact of digital technologies on society, contributing to our understanding of the digital age. What is Their Significance in Digital Marketing?

In the realm of digital marketing, web crawlers assume a position of paramount significance, serving as the gatekeepers that determine a website’s visibility on the vast expanse of the internet. The comprehension and strategic optimization for these crawlers wield a profound impact on a website’s SEO performance, directly influencing its standing on search engine results pages (SERPs). Adherence to SEO best practices becomes pivotal in this context, encompassing actions such as crafting comprehensive sitemap files, employing relevant keywords, and ensuring expeditious loading times. Marketers, by implementing these optimization strategies, not only render their content more accessible and appealing to crawlers but also elevate the likelihood of securing higher rankings in search results. This enhanced visibility stands as a pivotal driver for augmenting website traffic, engaging potential clientele, and ultimately, fostering increased conversions and sales.

Digital Marketing Course in Chandigarh:

With the increasing demand for digital marketing experts in the world, Chandigarh was not going to stay behind. Since its inception, the city has been destined for greatness and now it is on the right path. The government has correctly converted this city into a hub for education and this has only been possible because of certain things. Firstly, Chandigarh has the infrastructure that can support such a huge private education industry.

Secondly, the locality and the safety of this city are impeccable and this grants a sigh of relief to the parents. Many students come here from different states of India. The stress is relieved when they learn about the city’s clean image and safe streets.

To find all these services, CBitss Technologies can be your first and last option as they are the premier IT training institute in Chandigarh. Their SEO training in Chandigarh has been hailed as one of the best courses in the market. So, if you want to become a digital marketing expert, visit CBitss Technologies and talk to their counsellors.


In conclusion, web crawlers, commonly called spiders or bots on the internet, play an integral role in the efficient functioning of search engines by meticulously sweeping the vast expanse of the internet with high accuracy. Their ability to navigate through countless web pages, scrutinizing content and establishing links, forms the bedrock of timely and accurate search results. Beyond this function, these crawlers also find application in market research, where they assume the role of vigilant observers, monitoring fluctuations in online prices and changes in product listings. This real-time data becomes invaluable for businesses seeking to stay competitive and informed in the ever-evolving marketplace.

The realm of SEO is another domain where web crawlers wield profound influence. Understanding the intricacies of how these bots operate becomes a critical differentiator for digital marketers. By delving into the nuances of web crawler behaviour, marketers can optimize websites to align with the algorithms governing search engine rankings. This optimization involves a strategic interplay of elements such as creating comprehensive sitemap files, integrating relevant keywords, and ensuring swift loading times. The adept navigation of these optimization techniques becomes a decisive factor in determining a website’s visibility on search engine results pages (SERPs), distinguishing it from the vast pool of online content and potential competitors.


  1. What is the main purpose of a web crawler?
    • The main purpose of a web crawler is to browse the World Wide Web systematically to index and organize website content for search engines, making it easier for users to find relevant information.
  2. How do web crawlers work?
    • Web crawlers start with a list of URLs to visit, called seeds. As they visit these URLs, they identify all the hyperlinks on the page and add them to the list of URLs to visit next, systematically crawling through the web.
  3. Can websites block web crawlers?
    • Yes, of course, websites can block crawlers by using the robots.txt file, which specifies which parts of the site crawlers should not access.
  4. Do all search engines use their own web crawlers?
    • Yes, most major search engines like Google, Bing, and Yahoo have their own web crawlers to index websites for their search results.
  5. Can web crawlers read all types of content?
    • Primarily, web crawlers index text-based content and may encounter difficulty with content requiring user interaction or embedded in images, videos, or certain scripts.

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