Download DLL C# Library for Digital eSign

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Download C# Library for eSigning Documents via .NET API

GroupDocs.Signature for .NET allows developers to write applications with the ability to significantly sign electronic docs of various file formats. This e-signing API permits the users to add different types of signatures like text, image or digital signatures on electronic documents. The quite captivating fact about the API is, its UI less and independent calls can be made.

Release Notes Download

Get Started

Open NuGet package manager, search for GroupDocs.Signature and install. You may also use the following command from the Package Manager Console.

Install

To install please execute Install-Package GroupDocs.Signature from Package Manager Console in Visual Studio to fetch & reference GroupDocs.Signature assembly in your project.

PM>

     Install-Package GroupDocs.Signature

Update

If you already have GroupDocs.Signature for .Net and want to upgrade it, please execute Update-Package GroupDocs.Signature to get the latest version.

PM>

     Update-Package GroupDocs.Signature

Version Nuget

Why download GroupDocs.Signature for .NET?

This on-premise .NET API lets your app end-users sign the electronic documents from a wide range of file formats. Supports several types of e-signing methods.

Document Signature Processing Features

Create and add signatures to documents of various file formats.
Specify visual attributes of signatures, such as color, font, margins, etc.
Search and fetch a list of signatures from a document.
Determine if the document contains signatures meeting specified criteria.
Extract basic information about the document.
Generate image representation of document pages for preview.
Distinguish created signatures from the actual document.
Put encrypted text into the QR-code signature or embed custom data objects.

Signature Supported Formats

The following section lists the supported file formats for the barcode, image, QR-code, stamp, and text signature types:
Microsoft Word®: DOC, DOCM, DOCX, DOT, DOTM, DOTX
Microsoft Excel®: XLSX, XLS, XLSB, XLSM, XLTX, XLTM
Microsoft PowerPoint®: PPTX, PPTM, PPT, PPSX, PPSM, PPS, POTX, POTM
OpenOffice®: ODT, OTT, ODS, OTS, ODP, OTP
Image: BMP, DJVU, GIF, JPG, JPEG, PNG, SVG, TIF, TIFF, WEBP
CorelDraw®: CDR, CMX
Photoshop®: PSD
Metafile: WMF
Portable: PDF

Digital Signature Supported Formats

Microsoft Word®: DOC, DOCM, DOCX, DOT, DOTM, DOTX
Microsoft Excel®: XLSX, XLS, XLSB, XLSM, XLTX, XLTM
OpenOffice®: ODS, OTS
Portable: PDF

FormField Signature Supported Formats

Microsoft Word®: DOC, DOCM, DOCX, DOT, DOTM, DOTX
Microsoft Excel®: XLSX, XLS, XLSB, XLSM, XLTX, XLTM
OpenOffice®: ODS, OTS, ODP
Portable: PDF

Metadata Signature Supported Formats

Microsoft Word®: DOC, DOCM, DOCX, DOT, DOTM, DOTX
Microsoft Excel®: XLSX, XLS, XLSB, XLSM, XLTX, XLTM
Microsoft PowerPoint®: PPTX, PPTM, PPT, PPSX, PPSM, PPS, POTX, POTM
OpenOffice®: ODT, OTT, ODS, OTS, ODP, OTP
Image: JPG, JPEG, PNG, SVG, TIF, TIFF
Photoshop®: PSD
Portable: PDF

Supported Signature Types

Text stamps
Text labels
Text as an image signature
Image signature
Digital signature
Barcode signature
QR-code signature
Metadata signature
Form-field signature

Platform Independence

GroupDocs.Signature for .NET does not require any external software or third-party tool to be installed. GroupDocs.Signature for .NET supports any 32-bit or 64-bit operating system where .NET or Mono framework is installed. The other details are as follows:

Microsoft Windows®: Microsoft Windows Desktop (x86, x64) (XP & up), Microsoft Windows Server (x86, x64) (2000 & up), Windows Azure
macOS®: Mac OS X
Linux: Linux (Ubuntu, OpenSUSE, CentOS and others)
Development Environments: Microsoft Visual Studio (2010 & up), Xamarin.Android, Xamarin.IOS, Xamarin.Mac, MonoDevelop 2.4 and later.
Supported Frameworks: GroupDocs.Conversion for .NET supports .NET and Mono frameworks.

Get Started

Are you ready to give GroupDocs.Signature for .NET a try? Simply execute Install-Package GroupDocs.Signature from Package Manager Console in Visual Studio to fetch & reference GroupDocs.Signature assembly in your project. If you already have GroupDocs.Signature for .Net and want to upgrade it, please execute Update-Package GroupDocs.Signature to get the latest version.

Please check the GitHub Repository for other common usage scenarios.

Direct Download

GroupDocs.Signature for .NET 26.6

This contains the MSI installer of GroupDocs.Signature for .NET

Added: 2/7/2026 Downloads: