Explore advanced techniques for debugging websites using Fiddler and Chrome Developer Tools in this comprehensive conference talk. Learn about HTTP requests and responses, JavaScript error handling, and CSS troubleshooting. Discover how to leverage Fiddler's powerful features to capture and analyze network traffic, simulate various network conditions, and test backend APIs. Dive into Chrome Developer Tools to inspect the live DOM, debug JavaScript, and optimize website performance. Master essential skills such as finding sessions, handling mixed content warnings, and using the filmstrip view for visual debugging. Gain practical insights on image optimization, saving traces, and simulating different user agents to enhance your web development workflow.