PDF generation is one of those “looks easy, gets messy fast” features. In .NET 8, you can keep it clean by treating PDF creation like a pipeline (inputs → rendering → output) and using C# 12 primary constructors to reduce boilerplate without hiding architecture. This guide shows a practical, production-friendly approach to PDF generation with a clean architecture mindset plus where primary constructors help (and where they don’t). This guide shows a practical, production-friendly approach to PDF generation with a clean architecture mindset plus where primary constructors help (and where they don’t).