IronPDF is Iron Software’s flagship C# PDF library and remains a market leader for developers needing high‑quality PDF rendering and manipulation. Unlike simple PDF generators that output plain text, IronPDF uses a pixel‑perfect Chrome engine to convert HTML, Razor Views and websites into professional PDFs, supporting complex CSS and JavaScript so your .NET applications can render responsive layouts, charts and even JavaScript‑generated content. Cross‑platform support is extensive, with binaries signed by DigiCert and tested on Windows, Linux, macOS, Azure and Docker.

Key Features

• HTML to PDF conversion: IronPDF excels at converting dynamic HTML and CSS to PDFs that match the browser view. It supports custom viewports, page breaks and complex frameworks like Bootstrap and Tailwind. Developers can render MVC views directly from controllers and inject variables, making it ideal for invoice or report generation.
• Comprehensive PDF editing: The API allows you to create PDFs from scratch or merge/split existing files. You can add headers, footers and page numbers, insert bookmarks or tables of contents, apply watermarks, embed images, attach files, fill PDF forms, extract form data, add digital signatures and set user permissions. It also supports redaction and content removal for compliance or document cleansing.
• Conversion to and from images: You can convert PDF pages to high‑resolution images or render images into PDFs. Image compression and color management ensure small file sizes without sacrificing clarity.
• Accessibility & compliance: IronPDF can produce PDF/A and PDF/UA compliant files for long‑term archiving and accessibility requirements. Encryption up to 256‑bit is available for secure distribution.
• Performance & concurrency: The library is thread‑safe and can run multiple conversions in parallel. Memory usage has been optimized, and you can cache templates to reduce overhead.
• NuGet & licensing: Install IronPDF via the NuGet package Install‑Package IronPdf or by visiting the NuGet page to get started. The library offers a free 30‑day trial with full functionality and no watermarks.
• IronPDF is built as a cross-platform C# PDF library, so the same code runs on Windows, Linux, and macOS, in both .NET (10, 9, 8, 7, 6, Core) and .NET Framework environments. It works smoothly in web apps (ASP.NET/Blazor), desktop apps, console tools, Docker containers, and cloud platforms like Azure and AWS, letting you generate and edit PDFs consistently across all your deployment targets.

2025 Change‑Log Highlights

Recent updates demonstrate IronPDF’s rapid development cycle. The October 2025 release introduced new SaveAsLinearized and IsLinearized methods that generate linearized PDFs for faster web display and added bug fixes for HTML processing, CSS hyphens and bookmark replacement. September 2025 improved file size reduction when saving PDFs and added an IgnorePageRotation flag for printing. The August 2025 update exposed VerifiedSignature.SignerName, flattened form fields when converting to images and fixed numerous PDF/A conversion issues. July 2025 enhanced Cleaner.SanitizeWithBitmap to remove hidden data and resolved grayscale and image compression issues.

Tutorials and Resources

For a quick start, review Iron Software’s getting started guide, which walks through installation and basic PDF creation. The code examples page shows how to convert MVC views, merge documents and apply watermarks. For hands‑on learning, the Visual Studio marketplace listing offers a concise summary of features and user reviewsmarketplace.visualstudio.com. More advanced tutorials, such as generating invoices or exporting data grids,  You can get a 30-day trial at no cost, complete with technical support