WinForms PDF Library

Build a custom desktop application to view, edit, and process documents using WinForms and the GdPicture.NET library. Unlock 100+ features in your application, including a robust PDF viewer to open, display, annotate, edit, and sign documents. Add the ability to detect, identify, and extract text through a machine learning- and AI-powered OCR engine. Our library supports converting more than 100 file types to PDF or images (TIFF, JPG, PNG).

Our library is delivered as native .NET Framework, .NET Core, .NET 6, and COM/ActiveX components with full 32-bit and 64-bit support for applications written in Delphi. Get started for free and explore our guides and code samples to learn how you can quickly integrate our library into your application.

PSPDFKit SDKs are deployed in some of the world’s most popular applications, such as those made by Autodesk, Disney, DocuSign, Dropbox, IBM, and Lufthansa.

Key Capabilities

  • Viewing — Open, display, view, edit, annotate, and sign documents

  • Editing — Merge, rotate, and crop images or PDFs

  • 100+ file types — Convert PDFs, images, MS Office files, and more

  • Printing — Programmatically print 100+ file types to any printer within your applications

  • OCR — Highly accurate AI- and ML-powered OCR engine

  • Barcode — Scan, read, and generate all major barcodes (QR, PDF417, Aztec Code, and more)

  • TWAIN and WIA — Capture images from all types of scanners and digital cameras