GroupDocs.Metadata 21.8.0

.NET Standard 2.0 .NET Framework 2.0
Install-Package GroupDocs.Metadata -Version 21.8.0
dotnet add package GroupDocs.Metadata --version 21.8.0
<PackageReference Include="GroupDocs.Metadata" Version="21.8.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add GroupDocs.Metadata --version 21.8.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: GroupDocs.Metadata, 21.8.0"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install GroupDocs.Metadata as a Cake Addin
#addin nuget:?package=GroupDocs.Metadata&version=21.8.0

// Install GroupDocs.Metadata as a Cake Tool
#tool nuget:?package=GroupDocs.Metadata&version=21.8.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

.NET API for Metadata Processing

Version 21.8 Nuget


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

This .NET API can be consumed to integrate metadata viewer, editor, reader, writer, and remover operations within your .NET apps.

Document Metadata Processing Features

  • Read, update, and remove metadata in a variety of formats.
  • Search, update, and remove particular metadata properties as per specified predicate.
  • Use tags to easily manipulate the most common metadata properties in a unified manner.
  • Work with password-protected documents.
  • Extract information about hidden document pages, digital signatures, user comments, revisions, etc.
  • Supports many popular metadata standards, such as IPTC, XMP, EXIF, Image Resources.
  • Manipulate native metadata properties in various formats.
  • Extract technical information from images, audio, and video files.
  • Calculate common document statistics (word count, character count, etc.).
  • Detect the format and MIME type of a file by its internal structure.
  • Work with various audio tags (ID3, Lyrics, APE).
  • Load file from a local disk or a stream.
  • Load a file of a specific format or load a password-protected file.
  • Traverse a whole metadata tree.
  • Work with the APEv2, ID3v1, ID3v2, Lyrics & other tags of MP3 metadata.

Read & Write Metadata Formats

Microsoft Word: DOC, DOT, DOCX, DOCM, DOTX
Microsoft Excel: XLSX, XLSM, XLTM, XLS
Microsoft PowerPoint: PPTX, PPTM, PPSX, PPSM, POTX, POTM, PPT, PPS
Microsoft Visio: VSD, VDX, VSDX, VSS, VSX
Microsoft OneNote: ONE
Microsoft Project: MPP
OpenOffice: ODS, ODT, OTF, OTC
Audio: MP3, WAV
Video: AVI, MOV / QT, ASF, FLV
Archive: ZIP
Font: TTF, TTC
Metafile: EMF, WMF
Adobe Photoshop: PSD
Portable: PDF

Platform Independence

GroupDocs.Metadata for .NET does not require any external software or third-party tool to be installed. GroupDocs.Metadata for .NET support 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.Metadata for .NET a try? Simply execute Install-Package GroupDocs.Metadata from Package Manager Console in Visual Studio to fetch & reference GroupDocs.Metadata assembly in your project. If you already have GroupDocs.Metadata for .Net and want to upgrade it, please execute Update-Package GroupDocs.Metadata to get the latest version.

Please check the GitHub Repository for other common usage scenarios.

Use C# to Remove All Metadata Properties from a File

using (Metadata metadata = new Metadata(Constants.InputPdf))
    // Remove detected metadata packages
    var affected = metadata.Sanitize();
    Console.WriteLine("Properties removed: {0}", affected);


Extract Metadata from Files via C# Code

foreach(string file in Directory.GetFiles(Constants.InputPath)) {
    using(Metadata metadata = new Metadata(file)) {
        if (metadata.FileFormat != FileFormat.Unknown && !metadata.GetDocumentInfo().IsEncrypted) {

            // fetch all metadata properties that fall into a particular category
            var properties = metadata.FindProperties(p => p.Tags.Any(t => t.Category == Tags.Content));
            Console.WriteLine("The metadata properties describing some characteristics of the file content: title, keywords, language, etc.");
            foreach(var property in properties) {
                Console.WriteLine("{0} = {1}", property.Name, property.Value);

            // fetch all properties having a specific type and value
            var year = DateTime.Today.Year;
            properties = metadata.FindProperties(p => p.Value.Type == MetadataPropertyType.DateTime &&
                p.Value.ToStruct(DateTime.MinValue).Year == year);

            Console.WriteLine("All datetime properties with the year value equal to the current year");
            foreach(var property in properties) {
                Console.WriteLine("{0} = {1}", property.Name, property.Value);

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

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows
.NET Core netcoreapp2.0 netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Standard netstandard2.0 netstandard2.1
.NET Framework net20 net35 net40 net403 net45 net451 net452 net46 net461 net462 net463 net47 net471 net472 net48
MonoAndroid monoandroid
MonoMac monomac
MonoTouch monotouch
Tizen tizen40 tizen60
Xamarin.iOS xamarinios
Xamarin.Mac xamarinmac
Xamarin.TVOS xamarintvos
Xamarin.WatchOS xamarinwatchos
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on GroupDocs.Metadata:

Package Downloads

Conholdate.Total for .NET is a complete package to work with a large number of file formats from Microsoft Word, Excel, PowerPoint, Outlook, Project, Visio, Adobe Acrobat, Illustrator, Photoshop, AutoCAD, OpenOffice and many more. Conholdate.Total for .NET allows you to use any API released under Aspose and GroupDocs for .NET in order to create, convert, read, edit, update and print popular document formats. Moreover, you may view, annotate, watermark, assemble, classify, search, redact, parse, merge and compare documents without needing to install the native applications. It helps you in file format manipulation and document automation via simple API. Conholdate.Total for .NET also includes specialized APIs to read and create barcodes, extract text from images using OCR as well as extract human marked data from questioners, surveys, quizzes, MCQ papers and feedback forms.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
21.8.0 13,827 8/9/2021
21.6.0 3,351 6/11/2021
21.5.0 1,221 5/13/2021
21.4.0 1,263 4/1/2021
21.2.0 4,349 2/4/2021
21.1.0 1,303 1/20/2021
20.11.0 2,795 11/2/2020
20.10.0 1,342 9/30/2020
20.9.0 1,545 9/4/2020
20.8.0 1,450 8/11/2020
20.7.0 3,184 7/3/2020
20.6.0 2,048 6/3/2020
20.5.0 1,982 5/6/2020
20.4.0 1,235 4/2/2020
20.3.0 1,296 3/13/2020
20.1.0 2,509 1/23/2020
19.11.0 1,613 11/29/2019
19.5.1 1,606 6/14/2019
19.5.0 513 5/29/2019
19.4.0 605 4/4/2019
19.3.0 499 3/7/2019
19.2.0 584 2/7/2019
19.1.0 639 1/10/2019
18.12.0 682 12/5/2018
18.11.0 688 11/1/2018
18.10.0 742 10/5/2018
18.9.0 748 9/4/2018
18.8.0 776 8/3/2018
18.7.0 717 7/2/2018
18.6.0 734 6/4/2018
18.5.0 880 5/10/2018
18.4.0 901 4/12/2018
18.2.0 909 2/7/2018
18.1.0 875 1/12/2018
17.12.0 903 12/12/2017
17.11.0 903 11/6/2017
17.10.2 947 10/24/2017
17.10.1 823 10/10/2017
17.10.0 877 10/3/2017