Crawlers also send text from every website to an index to be analyzed. Web crawlers, also known as spiders, are programs that constantly search the internet, finding new sites and identifying new links. How do search engines work?Īlthough search engines have gotten more complex over the years, they still follow a pretty basic formula: Crawl and index all the data on the web so that when you search for something, it can present you with a set of results, ranked by relevance.

They can be accessed easily from a browser, but they’re different technologies. But search engines are web services specifically built to retrieve information. Today, many people think search engines are synonymous with internet browsers-thanks in part to the Google Chrome browser building search engine functionality into the web address bar. The type of search engine most of us are familiar with is the internet search engine, which is a web service that finds information on the internet (sometimes called the “world wide web”) based on a user’s query, which is typically a set of words.

A search engine is software designed to retrieve specific information.

Search engine ranking