What Is a Web Crawler and How Does It Work

A web crawler, also known as a web spider or search engine bot, is a bot that visits and indexes the content of web pages all over the Internet. In this article, we will guide you through the way showing how web crawlers work and the differences between web crawling and web scraping.

https://www.octoparse.com/blog/what-is-a-web-crawler-and-how-does-it-work-at-your-benefit/?drib=