DevExpress PDF Document API

The DevExpress PDF Document API is a non-visual .NET library that allows you to generate, convert, merge, split, edit, password-protect, and digitally sign PDF files. Add markup annotations and fill interactive forms, extract text, apply digital signatures, and redact PDFs directly from .NET code.

Get Started

Install the DevExpress.Document.Processor NuGet package

dotnet add package DevExpress.Document.Processor

Code Example - Encrypt PDF with Access Permissions

using DevExpress.Pdf;

using var pdfProcessor = new PdfDocumentProcessor();
pdfProcessor.LoadDocument("pdfDocument.pdf");
PdfEncryptionOptions encryptionOptions = new PdfEncryptionOptions();
encryptionOptions.DataExtractionPermissions = PdfDocumentDataExtractionPermissions.NotAllowed;
encryptionOptions.OwnerPasswordString = "OwnerPassword";
encryptionOptions.UserPasswordString = "UserPassword";
encryptionOptions.Algorithm = PdfEncryptionAlgorithm.AES256;
MemoryStream pdfEncryptedStream = new MemoryStream();
pdfProcessor.SaveDocument(pdfEncryptedStream, new PdfSaveOptions() { EncryptionOptions = encryptionOptions })

Code Example - Merge two PDF documents into a Single File

using DevExpress.Pdf;

using var pdfProcessor = new PdfDocumentProcessor();
pdfProcessor.CreateEmptyDocument();
pdfProcessor.AppendDocument(docStream1);
pdfProcessor.AppendDocument(docStream2);
MemoryStream mergedPdfStream = new MemoryStream();
pdfProcessor.SaveDocument(mergedPdfStream);
mergedPdfStream.Position = 0;

Key Features

The DevExpress PDF Document API allows you to manage PDF documents in code:

Generate or edit document content
Merge or split files, manage pages
Annotate and comment PDF files
Create, fill, and edit interactive forms
Password-protect documents
Digitally sign PDF files
Convert to PDF/A compliant files
Attach ZUGFeRD invoices
Print and export to image formats
And much more

Word Processing

Spreadsheet Document API

PDF Document API

Presentation API