Read PDF Metadata in C# Using .NET REST API for Better Document Insights

Extracting hidden metadata from PDF files is often a vital task in enterprise settings, particularly for data audits, content classification, and compliance purposes. With the GroupDocs.Metadata Cloud .NET SDK, developers can effortlessly retrieve PDF metadata programmatically using minimal C# code. There's no need for complicated dependencies or manual inspections — just straightforward, reliable access to document properties via a secure .NET REST API.

Whether you're developing a digital archiving solution, incorporating document processing features into your web application, or setting up a security mechanism to identify metadata leaks, this SDK facilitates PDF metadata reading in .NET with unmatched precision and efficiency. It enables the extraction of metadata information, creation/modification timestamps, author details, producer information, and more — all in a format that integrates effortlessly with your current C# or ASP.NET applications.

This capability for metadata extraction is part of a larger ecosystem powered by the GroupDocs.Metadata Cloud .NET platform. By utilizing this SDK, you gain access to a scalable, cloud-based solution designed for contemporary development environments — all without the hassle of manually handling PDF parsing logic. Explore how to incorporate advanced document insights into your .NET workflows by checking out our extensive tutorial today.

The C# code example below assists you in integrating this functionality into your desktop or web applications:

using GroupDocs.Metadata.Cloud.Sdk.Api;
using GroupDocs.Metadata.Cloud.Sdk.Client;
using GroupDocs.Metadata.Cloud.Sdk.Model;
using GroupDocs.Metadata.Cloud.Sdk.Model.Requests;

class Program
{
    static void Main(string[] args)
    {

        // Step 1: Set up API credentials and initialize configuration
        string MyAppKey = "your-app-key";
        string MyAppSecret = "your-app-secret";
        var configuration = new Configuration(MyAppKey, MyAppSecret);

        // Step 2: Initialize Metadata API for extracting metadata
        var metadataApi = new MetadataApi(configuration);

        // Step 3: Set up the file info
        var fileInfo = new GroupDocs.Metadata.Cloud.Sdk.Model.FileInfo
        {
            // Path of the source file in the cloud storage
            FilePath = "SampleFiles/source.pdf"
        };

        // Step 4: Define extraction options 
        var extractOptions = new ExtractOptions
        {
            FileInfo = fileInfo,
        };

        // Step 5: Create and execute the request to extract metadata
        var extractRequest = new ExtractRequest(extractOptions);
        var response = metadataApi.Extract(extractRequest);

        // Step 6: Print the extracted PDF metadata
        var innerPK = response.MetadataTree.InnerPackages;
        for (int i = 0; i < innerPK.Count; i++)
        {
            Console.WriteLine($"\nPackage: {innerPK[i].PackageName}");
            var packageProperties = innerPK[i].PackageProperties;
            for (int j = 0; j < packageProperties.Count; j++)
            {
                Console.WriteLine(packageProperties[j].Name + " : " 
                                        + packageProperties[j].Value);
            }
        }
    }
}