GroupDocs.Metadata 24.9.0

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

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

1. Open your project in Visual Studio.
2. Go to Tools → NuGet Package Manager → Manage NuGet Packages.
3. Search "GroupDocs.Metadata" and click Install.

Using Package Manager Console

1. Open Package Manager Console in Visual Studio.
2. 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);
}

Tags

Metadata Management API | Document Metadata | XMP Metadata | EXIF Metadata | IPTC Metadata | Document Privacy | Metadata Removal | Document Metadata Editing | PDF Metadata | Image Metadata | Audio Metadata | Video Metadata | Metadata API for .NET | GroupDocs Metadata | EXIF Data Extraction | Digital Signatures Removal