GroupDocs.Signature 22.8.0

.NET Standard 2.0 .NET Framework 4.0
There is a newer version of this package available.
See the version list below for details.
dotnet add package GroupDocs.Signature --version 22.8.0
NuGet\Install-Package GroupDocs.Signature -Version 22.8.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="GroupDocs.Signature" Version="22.8.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add GroupDocs.Signature --version 22.8.0
#r "nuget: GroupDocs.Signature, 22.8.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install GroupDocs.Signature as a Cake Addin
#addin nuget:?package=GroupDocs.Signature&version=22.8.0

// Install GroupDocs.Signature as a Cake Tool
#tool nuget:?package=GroupDocs.Signature&version=22.8.0

WebP File Format Signature Support in .NET API

Version 22.8.0 Nuget


Product Page | Docs | Demo | API Reference | Examples | Blog | Search | Free Support | Temporary License

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.

What's new in v22.8.0

WebP File Format Support

This API release introduces the support of the Google® WebP image file format for the full electronic signature life cycle processing.

Improved AES Encryption Algorithm

The new and improved implementation of AES encryption algorithm enhances its capabilities to be on par with highly secure standards.

Improved QR Code Event Object Scanner

Improved the ability of QR Code Event object scanner to support empty and missing fields.

For a complete list of features, enhancements, and bug fixes in this release please visit, GroupDocs.Signature for .NET 22.8 Release Notes.

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
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
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
Mac OS: 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.

Sign a PDF File and Save it in DOCX Format using C# Code

using (Signature signature = new Signature("sample.pdf"))
    // create QRCode option with predefined QRCode text
    QRCodeSignOptions signOptions = new QRCodeSignOptions("JohnSmith")
        EncodeType = QRCodeTypes.QR,
        Left = 100,
        Top = 100
    PdfSaveOptions pdfSaveOptions = new PdfSaveOptions()
        FileFormat = PdfSaveFileFormat.DocX,
        OverwriteExistingFiles = true
    // sign document to file
    signature.Sign("SignedPdf.docx", signOptions, pdfSaveOptions);

Use C# to Search and Delete Signatures from a DOCX File

// initialize Signature instance
using (Signature signature = new Signature("signed.docx"))
    BarcodeSearchOptions options = new BarcodeSearchOptions();
    List<BarcodeSignature> signatures = signature.Search<BarcodeSignature>(options);
    List<BaseSignature> signaturesToDelete = new List<BaseSignature>();
    // collect signatures to delete
    foreach (BarcodeSignature temp in signatures)
        if (temp.Text.Contains("John"))
    // delete signatures
    DeleteResult deleteResult = signature.Delete(signaturesToDelete);
    if (deleteResult.Succeeded.Count == signaturesToDelete.Count)
        Console.WriteLine("All signatures were successfully deleted!");
        Console.WriteLine($"Successfully deleted signatures : {deleteResult.Succeeded.Count}");
        Console.WriteLine($"Not deleted signatures : {deleteResult.Failed.Count}");
    Console.WriteLine("List of deleted signatures:");
    foreach (BaseSignature temp in deleteResult.Succeeded)
        Console.WriteLine($"Signature# Id:{temp.SignatureId}, Location: {temp.Left}x{temp.Top}. Size: {temp.Width}x{temp.Height}");

Product Page | Docs | Demo | API Reference | Examples | Blog | Search | Free Support | Temporary License

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net40 is compatible.  net403 was computed.  net45 was computed.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
23.11.0 907 11/29/2023
23.10.0 1,170 10/25/2023
23.9.0 1,103 9/27/2023
23.8.0 1,115 8/30/2023
23.7.0 989 7/28/2023
23.6.0 2,115 7/9/2023
23.5.0 3,604 5/31/2023
23.4.0 837 4/29/2023
23.3.0 1,017 3/30/2023
23.2.0 1,613 3/1/2023
23.1.0 1,552 1/31/2023
22.12.0 4,958 12/31/2022
22.11.0 2,279 12/1/2022
22.10.0 893 11/1/2022
22.9.0 971 10/2/2022
22.8.0 1,015 8/31/2022
22.7.0 1,119 7/31/2022
22.6.0 1,105 6/30/2022
22.4.0 7,028 4/6/2022
21.11.0 10,033 12/1/2021
21.9.0 10,815 9/30/2021
21.7.0 7,527 8/1/2021
21.6.0 4,345 6/29/2021
21.4.0 4,522 5/3/2021
21.3.0 4,640 3/31/2021
21.1.0 20,551 1/28/2021
20.11.0 12,839 11/30/2020
20.10.0 11,121 11/2/2020
20.9.0 9,126 9/30/2020
20.8.0 8,265 9/1/2020
20.7.0 8,016 8/2/2020
20.6.0 18,223 7/1/2020
20.5.0 12,806 5/31/2020
20.4.0 13,965 4/30/2020
20.3.0 8,403 3/31/2020
20.2.0 13,544 2/29/2020
20.1.0 8,540 2/3/2020
19.12.1 5,804 1/10/2020
19.12.0 6,347 12/30/2019
19.10.0 8,637 10/31/2019
19.9.0 721 9/30/2019
19.8.0 759 8/23/2019
19.6.0 1,111 6/27/2019
19.5.0 1,465 5/30/2019
19.4.0 744 4/30/2019
19.3.0 798 3/30/2019
18.7.1 1,144 8/1/2018
18.7.0 1,070 7/30/2018
18.6.0 1,206 6/20/2018
18.5.0 1,024 5/30/2018
18.3.0 1,216 3/21/2018
18.2.0 1,253 2/19/2018
18.1.1 1,186 1/22/2018
18.1.0 1,200 1/21/2018
17.12.0 1,183 12/7/2017
17.11.0 1,148 11/7/2017
17.10.0 1,113 10/3/2017