A Web Scraper is a tool or software designed to extract data from websites. It automates the process of gathering information, such as text, images, or links, from web pages. This data can be used for various purposes, including research, market analysis, or content aggregation. Web scrapers can be simple scripts or complex applications, often utilizing programming languages like Python or JavaScript. They work by sending requests to a website, retrieving the HTML content, and then parsing it to find the desired information. Proper use of web scrapers requires adherence to a website's robots.txt file and terms of service.