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Explore the technical intricacies of QR code generation and URL forwarding services through reverse engineering techniques in this 32-minute conference talk from DjangoCon US 2025. Dive deep into the underlying mechanisms that power QR code generators and URL shortening services, learning how to deconstruct and understand these commonly used web technologies. Gain insights into the architecture, algorithms, and implementation details behind these systems while discovering practical approaches to reverse engineering web services. Learn from Mariatta's expertise as she demonstrates methodologies for analyzing and understanding how these digital tools function under the hood, providing valuable knowledge for developers interested in understanding the technical foundations of ubiquitous web services.