Web crawling is a powerful technique for automatically discovering and visiting web pages. Building a C# web crawler allows you to systematically explore websites to gather data at scale. In this tutorial, you'll learn how to build a web crawler in C# from scratch. We'll cover everything from setting up your development environment to implementing advanced features like parallel crawling, handling JavaScript-rendered pages, and more. By the end, you'll have a robust C# crawler capable of navigating websites, following links, and extracting data—all while adhering to best practices to avoid getting blocked. What Is Web Crawling? Web crawling is a technique for automatically discovering and navigating through web pages by following links. Unlike web scraping, which focuses on extracting specific data from web pages, crawling is about finding and visiting pages systematically. Think of web crawling as drawing a map of a website's structure, while web scraping is about c...