What is web crawling?

A Web crawler is an Internet bot which helps in Web indexing.

Web crawling is the process of reading through webpage sources by search engine crawlers to provide information to search engines.

Crawling is the process where a Google bot systematically crawls the World Wide Web. It can also be called a spider or spider bot and it's usually to index or update pages.

A Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web, typically for the purpose of Web indexing

Web crawler is an Internet bot that systematically browses the World Wide Web, typically for the purpose of Web indexing