🧾 ASP.NET Core Invoice PDF Generator using QuestPDF (Source Code)

Take your ASP.NET Core applications to the next level by integrating pixel-perfect PDF invoice generation—no bloated dependencies, no licensing headaches.

This clean and modular source code provides a production-ready implementation of a dynamic invoice generator using QuestPDF, the open-source PDF engine that combines power and simplicity. Whether you're building a SaaS billing system, client invoicing tool, or freelance receipt app, this codebase gives you a solid foundation to get started instantly.

🎯 What You Get

• ✅ Full ASP.NET Core project with controller, models, and PDF rendering logic
• ✅ Clean, modern invoice layout (header, line items, totals, footer)
• ✅ Easily customizable invoice fields (logo, billing info, tax, notes, etc.)
• ✅ InvoiceModel and InvoiceItem C# classes with auto-calculation
• ✅ InvoiceDocument.cs layout using QuestPDF’s fluent API
• ✅ Sample data + endpoint to generate and preview PDFs
• ✅ No external services or paid libraries required

👨‍💻 Who It’s For

• ASP.NET Core developers building business applications
• Freelancers or consultants looking to automate invoicing
• SaaS creators wanting a branded, professional PDF output
• Students learning C#/.NET PDF document generation
• Indie makers selling digital products or services

📦 Requirements

• .NET 6 or later
• Visual Studio or any .NET-compatible IDE
• NuGet package: QuestPDF (MIT Licensed)

🛠 Tech Stack

• Backend: ASP.NET Core (MVC or API)
• PDF Library: QuestPDF (.NET C#)
• Data Models: Strongly typed InvoiceModel and InvoiceItem
• Output: Pixel-perfect, A4-format invoice in PDF

📥 Why Support This?

Your support helps keep open-source content like this accessible and evolving. By purchasing this source code, you're saving hours of development time and encouraging more ASP.NET content from SoftDevBytes.

💡 Bonus: This solution is designed with extensibility in mind. Easily add logos, QR codes, localized currency formats, or dynamic tax rules with QuestPDF’s intuitive layout system.

🚀 Instant download. No DRM. Lifetime access.

Let’s build professional-grade PDFs in .NET the right way — grab the code, customize, and deploy.