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Download C# Library for Metadata Processing via .NET API

GroupDocs.Metadata for .NET API can be consumed as Metadata viewer for CRUD operations. It helps developers to read, write, edit and remove meta information from all popular document file formats. It gets the file as input, access the file property information and allows users to perform metadata operations for locating this specific document file easily for future reference.

Release Notes Download

Get Started

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

Install

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

PM>

     Install-Package GroupDocs.Metadata

Update

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

PM>

     Update-Package GroupDocs.Metadata

Manage Document Metadata using .NET API

Important Note: Starting from 24.4.0, the GroupDocs.Metadata package has been split into two distinct platform packages: .NET Standard and .NET Framework. The GroupDocs.Metadata package is specifically designed to support the .NET Standard platform, making it compatible with .NET Core, .NET 5, .NET 6, etc. It includes backward compatibility improvements, allowing it to function with .NET Framework versions starting from 4.7.2. In addition, we have introduced the GroupDocs.Metadata.NETFramework package, which is optimized to run seamlessly in the .NET Framework runtime because it includes all the GroupDocs product libraries in their respective .NET Framework versions. It is tailored specifically for .NET Framework users and offers better dependency resolution for those utilizing the .NET Framework. We hope these changes will enhance your experience and provide a more streamlined approach to using the GroupDocs.Metadata package. If you have any further questions or concerns, please don’t hesitate to reach out to our free support forum.

GroupDocs.Metadata for .NET is a powerful API for extracting, editing, and removing metadata from a wide variety of document formats including PDFs, Word files, images, and more. It supports common metadata standards like XMP, EXIF, and IPTC, allowing users to manage metadata for text, image, audio, and video files effortlessly. The API also provides extended capabilities such as handling password-protected documents, detecting digital signatures, and extracting hidden metadata properties. Whether you need to clean metadata for privacy or update properties for better document organization, GroupDocs.Metadata streamlines the process with a few lines of code.

Reading, Updating, and Removing Metadata

Reading Metadata
Retrieve metadata information from supported document formats.

Updating Metadata
Modify or update existing metadata properties in documents.

Removing Metadata
Remove metadata from documents to clean sensitive information.

Metadata Manipulation Using Tags

Tag-based Metadata Manipulation
Manage metadata properties using tags for easier identification and organization.

Extracting Metadata by Tag
Retrieve metadata based on specific tags assigned to the properties.

Adding Tags
Add custom tags to metadata for enhanced management.

Removing Tags
Remove specific metadata tags from the document.

Working with Password-Protected Documents

Access Password-Protected Documents
Open, modify, and extract metadata from password-protected files.

Metadata Handling in Encrypted Files
Ensure metadata manipulation while working with encrypted or secured files.

Extracting Hidden Information

Hidden Metadata Extraction
Identify and retrieve hidden metadata elements embedded within documents.

Analyzing Hidden Metadata
Analyze the metadata that is not visible in regular document properties.

Format Detection and MIME Type Identification

Format Detection
Automatically detect the format of the file for accurate metadata extraction.

MIME Type Identification
Determine the MIME type of documents for proper metadata handling.

Audio, Image, and Video Metadata Management

Audio Metadata Management
Extract and manage metadata from audio files, including properties like duration, bitrate, and codec.

Image Metadata Management
Handle metadata in image files such as resolution, EXIF data, and color profile.

Video Metadata Management
Work with metadata for video files, including frame rate, resolution, and encoding information.

Extracting Metadata by Tag, Type, and Regex

Extract Metadata by Type
Retrieve metadata based on its type (e.g., author, creation date).

Regex-based Metadata Extraction
Use regular expressions to extract metadata that matches specific patterns.

Extracting Metadata by Tag
Retrieve metadata properties tagged with specific labels.

Removing Specific Metadata

Selective Metadata Removal
Remove specific metadata properties such as author name or modification date.

Adding and Updating Metadata

Adding Metadata Properties
Add new metadata properties to documents.

Updating Metadata
Modify and update existing metadata fields within the document.

Traversing Metadata Trees

Metadata Tree Traversal
Navigate through complex metadata trees in documents to locate and modify specific properties.

Exporting Metadata to Excel

Excel Metadata Export
Export document metadata to Excel format for reporting or further analysis.

Working with Metadata Standards

Compliance with Metadata Standards
Ensure metadata manipulation follows standards like Dublin Core, XMP, and IPTC.

Extracting and Managing Audio, Video, and Image Metadata

Managing Media Metadata
Extract and manage metadata from audio, video, and image files for organization and reporting.

Handling Custom Tags and Properties

Custom Tag Management
Add, edit, and remove custom metadata tags in documents to suit specific use cases.

Exporting Metadata to Various Formats

Metadata Export
Export metadata to different formats such as XML, JSON, and CSV for easy sharing and analysis.

Supported File Formats

Format	Description	Load	Save	Remarks
ASF	Advanced Systems Format (Video)	✔️	✔️
AVI	Audio Video Interleave File	✔️	✔️
BMP	Bitmap Picture (BMP)	✔️	✔️	BMP Specification v5
CR2	Digital photography RAW format created by Canon	✔️	✔️
DAE	DAE File Format	✔️	✔️
DICOM	Digital Imaging and Communications in Medicine (DICOM)	✔️	✔️
DJVU/DJV	Deja Vu (DjVu)	✔️	✔️	Supported since version 3.0
DNG	Digital Negative Specification	✔️	✔️
DOC	Microsoft Word 97 - 2007 Document	✔️	✔️	*.doc versions starting from Microsoft Word 95
DOCM	Office Open XML WordprocessingML Macro-Enabled Document	✔️	✔️
DOCX	Office Open XML WordprocessingML Document (macro-free)	✔️	✔️
DOT	Microsoft Word 97 - 2007 Template	✔️	✔️
DOTX	Office Open XML WordprocessingML Template (macro-free)	✔️	✔️
DWG	Autodesk Design Data Formats	✔️	✔️
DXF	AutoCAD Drawing Interchange	✔️	✔️
EMF	Windows Enhanced Metafile (EMF)	✔️	✔️	Revision 11.0
EML	Email Message Format	✔️	✔️
EPUB	Saves the document in the IDPF EPUB format	✔️	✔️	Versions 2.0, 3.0.1, 3.1
FBX	FBX File Format	✔️	✔️
FLV	Flash Video File	✔️	✔️
GEOJSON	GeoJSON File Format	✔️	✔️
GIF	Graphics Interchange Format (GIF)	✔️	✔️	Supported since version 89a
GML	GML File Format	✔️	✔️
GPX	GPX File Format	✔️	✔️
HEIF/HEIC	High Efficiency Image File Format	✔️	✔️
JP2	JPEG2000 Core Image File	✔️	✔️
JPG/JPEG/JPE	Joint Photographic Experts Group (JPEG)	✔️	✔️	Supported since version 1.02
KML	KML File Format	✔️	✔️
MOV/QT	Apple QuickTime Movie	✔️	✔️
MP3	MPEG Audio Layer III	✔️	✔️
MPP	Microsoft Project Document	✔️	✔️
MSG	Outlook Email Message Format	✔️	✔️
ODS	Open Document Spreadsheet	✔️	✔️
ODT	ODF Text Document	✔️	✔️
ONE	Microsoft OneNote	✔️	✔️
OSM	OSM File Format	✔️	✔️
OTC	OpenDocument Chart Template	✔️	✔️
OTF	OpenType Font	✔️	✔️
PDF	PDF (Adobe Portable Document) format	✔️	✔️	*.pdf versions starting from PDF version 1.2
PNG	Portable Network Graphics (PNG)	✔️	✔️	Version 1.0 and later
POTM	OOXML Macro Enabled Presentation Template	✔️	✔️
POTX	OOXML Presentation Template	✔️	✔️
PPS	PowerPoint SlideShow 97-2003	✔️	✔️
PPSM	OOXML Macros Enabled Presentation	✔️	✔️
PPSX	OOXML SlideShow	✔️	✔️
PPT	PowerPoint Presentation 97-2003	✔️	✔️	*.ppt versions starting from Microsoft PowerPoint 97
PPTM	OOXML Macro Enabled Presentation	✔️	✔️
PPTX	OOXML Presentation	✔️	✔️
PSD	Adobe Photoshop Document (PSD)	✔️	✔️	Adobe Photoshop 2.0 and later
RAR	RAR Archive File Format	✔️	✔️
SEVENZIP	7z Archive File Format	✔️	✔️
SHP	SHP File Format	✔️	✔️
STL	STL File Format	✔️	✔️
TAR	TAR Archive File Format	✔️	✔️
THREEDS	3DS File Format	✔️	✔️
TIFF	Tagged Image File Format (TIFF)	✔️	✔️	Supported since version 6.0
TOPOJSON	TopoJSON File Format	✔️	✔️
TORRENT	BitTorrent File	✔️	✔️
TTC	TrueType Font Collection	✔️	✔️
TTF	TrueType Font	✔️	✔️
VCF	Electronic Business Card (vCard)	✔️	✔️
VDX	Microsoft Visio 2003-2010 XML Drawing	✔️	✔️
VSD	Microsoft Visio 2003-2010 Drawing	✔️	✔️
VSDX	Microsoft Visio Drawing	✔️	✔️
VSS	Microsoft Visio 2003-2010 Stencil	✔️	✔️
VSX	Microsoft Visio 2003-2010 XML Stencil	✔️	✔️
WAV	Waveform Audio File Format	✔️	✔️
WEBP	WebP Image	✔️	✔️
WMF	Windows Metafile (WMF)	✔️	✔️	Revision 13.0
XLS	Excel Workbook 97-2003	✔️	✔️	*.xls versions starting from Microsoft Excel 95
XLSM	OOXML Macro Enabled Workbook	✔️	✔️
XLSX	OOXML Workbook	✔️	✔️
XLTM	OOXML Macro Enabled Workbook Template	✔️	✔️
ZIP	Archive File Format	✔️	✔️	Supported since version 6.3.4

System Requirements

GroupDocs.Metadata for .NET requires no external software. It supports 32-bit and 64-bit operating systems with .NET or Mono installed.

Supported Operating Systems

Windows: Server 2003/2008/2012/2016/2019, Vista, XP, 7, 8, 8.1, 10, Azure
Linux: Ubuntu, OpenSUSE, CentOS, and others
Mac: macOS

Supported Frameworks

.NET Frameworks: 2.0, 3.5, 4.0, 4.0_ClientProfile, 4.5.x, 4.6.x, 4.7, 4.7.2
.NET Standard: 2.0
.NET Core: 2.0, 2.1
Mono: 2.6.7 or later

Development Environments

Visual Studio (2010-2019)
Xamarin (Android, iOS, Mac)
MonoDevelop 2.4+

Installation

To install GroupDocs.Metadata for .NET via NuGet:

Using Package Manager GUI

Open your project in Visual Studio.
Go to Tools → NuGet Package Manager → Manage NuGet Packages.
Search “GroupDocs.Metadata” and click Install.

Using Package Manager Console

Open Package Manager Console in Visual Studio.
Run: Install-Package GroupDocs.Metadata.

GroupDocs.Metadata will be added to your project.

Extract Basic Document Metadata using GroupDocs.Metadata for .NET

Learn how to extract essential metadata like file format, number of pages, and document size using GroupDocs.Metadata for .NET. Simplify metadata extraction in your .NET applications.

// Example: Extracting basic document metadata using GroupDocs.Metadata for .NET

// Load the document from the specified path
using (Metadata metadata = new Metadata(Constants.InputXlsx))
{
    // Check if the file format is recognized
    if (metadata.FileFormat != FileFormat.Unknown)
    {
        // Get document metadata information
        IDocumentInfo info = metadata.GetDocumentInfo();
        
        // Output the extracted metadata details
        Console.WriteLine("File format: {0}", info.FileType.FileFormat);
        Console.WriteLine("File extension: {0}", info.FileType.Extension);
        Console.WriteLine("MIME Type: {0}", info.FileType.MimeType);
        Console.WriteLine("Number of pages: {0}", info.PageCount);
        Console.WriteLine("Document size: {0} bytes", info.Size);
        Console.WriteLine("Is document encrypted: {0}", info.IsEncrypted);
    }
}

Remove Specific Metadata Properties from Documents

Discover how to remove specific metadata properties such as document author or editor from your files using GroupDocs.Metadata for .NET. Enhance your file privacy by removing unwanted metadata.

// Example: Removing specific metadata properties using GroupDocs.Metadata for .NET

// Load the document from the specified path
using (Metadata metadata = new Metadata(Constants.InputDocx))
{
    // Remove metadata properties based on specified criteria (e.g., author, editor, or containing "John")
    var affected = metadata.RemoveProperties(
        p => p.Tags.Contains(Tags.Person.Creator) ||
             p.Tags.Contains(Tags.Person.Editor) ||
             (p.Value.Type == MetadataPropertyType.String && p.Value.ToString().Contains("John"))
    );
    
    // Output the number of properties removed
    Console.WriteLine("Properties removed: {0}", affected);

    // Save the changes to the document
    metadata.Save(Constants.OutputDocx);
}

Direct Download

GroupDocs.Metadata for .NET 25.8 (DLLs only)

This ZIP file contains only the GroupDocs.Metadata for .NET assemblies. The asse...

Added: 4/8/2025 Downloads: