Semalt Islamabad Specialist: What Is A Search Spider?

Search Engine Optimization is a digital marketing technique which involves gaining the search engine visibility. To book a robust presence in the search engine networks, website developers place a robots.txt file in the root directory of your search engine website. These records help web crawlers called search engine spiders find, read and index your web pages. Website optimization involves both technical as well as design aspects of a website which helps these sites book a top position up in the SERPs.

In this SEO article prepared by the expert from Semalt, Michael Brown, describes web crawler effect and its operation.

A search engine web crawler is a simple computer program. These software's have the capability of visiting various websites and finding the information present in their database. This information may be any form of indexable web content current on your website pages. The search engine websites use this information to develop a sophisticated algorithm of ranking the links as answers to a search query. People who optimize their sites elevate their possibility of getting listed in the SERPs of particular keywords.

Search engines

Just like regular websites, search engines are hosted on a database and work using web crawlers. They have a database of search results based on several factors. For instance, websites containing keywords as well as efficient backlinking get top most priority Content relevance comes about due to a combination of keyword relevance as well as other website design aspects such as optimization. Search engines use a complex mathematical equation to come up with their ranking criterion. The value of a web page for content is called the page rank.

When a visitor places a web search query, the search algorithm has to determine which websites to place in which positions. When a site needs to get some search engine visibility, one mandatory optimization feature is booking for indexing. A website which is available for indexing should allow a search engine spider find and index all the necessary content. To index, there needs to be a robots.txt file in the root directory. Unlike typical websites, search engine websites usually require a massive storage space. They have to collect a lot of information from a lot of sites for them to be efficient in their ranking methods.


Web crawlers form crucial aspects of today's website experiences. May websites make their websites efficient by the use of web crawlers which execute their activities. This application finds its suitability in search engine networks. Many search engines have effective website crawlers for different indexing website. These web crawlers can visit all the pages of a site and bring all its contents to their database for indexing. From this source, these websites can be able to use this mathematical algorithm to rank website as results. A well-optimized site should occupy a top rank in their search engine equation. This SEO article has extensive information on what web crawler is, its operation, and contribution in a search engine website. You will be able to optimize your site for indexing and gain a robust search engine visibility.