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C# .NET PDF library

Nutrient .NET SDK has two packages: GdPicture and Nutrient.SDK.

Nutrient .NET SDK provides OCR, data extraction, PDF editing, conversion, barcode reading and writing, TWAIN scanning, and more for .NET applications. Its API integrates PDF, imaging, and data processing capabilities.

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GdPicture package changelog: Check the latest release updates for the GdPicture package.

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Two packages, one license: Start new .NET 10 projects with the Nutrient.SDK package. Use the GdPicture package for existing apps, desktop viewers, scanners, or COM. Compare the packages in the getting started overview.

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Nutrient .NET SDK has four layers, so you can build and scale document workflows without changing stacks:

  • App/UI layer — Build with WinForms, WPF, MAUI, web/WASM hosts, or backend services.
  • SDK API layer — Integrate through a consistent public API surface for document operations.
  • Document processing core — Combine capabilities such as PDF processing, imaging, OCR and data extraction, barcode reading and writing, conversion, and viewing/annotation.
  • Platform targets — Run across Windows, Linux, and macOS, with a separate WebAssembly (browser) target.

This layered approach helps teams start with standard use cases and expand into advanced processing scenarios over time.

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