Selenium WebDriver is an effective tool for identifying broken images on websites, which can negatively impact user experience and SEO. Rather than manually inspecting sites or using third-party tools, leveraging Selenium WebDriver allows for automated detection of broken images by sending HTTP requests to image URLs and analyzing the response codes. The tutorial details how to implement this process using different programming languages like Java, Python, C#, and PHP, emphasizing the importance of checking the HTTP Status Code to determine image availability. It highlights the need to convert relative paths to absolute ones when necessary and provides examples of handling image paths and responses. The guide also underscores the significance of maintaining website integrity by ensuring all images are correctly linked and accessible, thus improving user retention and search engine rankings.