Unleashing Web Scraping with C# using OpenGraphIo Library

Blake Archer

July 31, 2023

3 min read

A display of computer code.

The OpenGraphIo Library - Transforming the C# Web Scraping Landscape

The OpenGraphIo library is a revolutionary .NET client library designed for web scraping with C#. It enables developers to seamlessly extract Open Graph tags from any URL. By providing a URL to the OpenGraphIo client, an HTTP request is dispatched to OpenGraph.io, proceeding to scrape the site for Open Graph tags. The resulting tags, rich with data, are returned to enhance your application.

This web scraping process fuels your applications with real-time data from other websites, making it a linchpin for news aggregators, price comparison tools, SEO monitoring systems, and more.

Implementing OpenGraphIo in Your C# Project: A Step-by-Step Guide

  • First, make sure you have the .NET SDK installed on your machine. If you don't have it installed, you can download it from the official Microsoft website
  • Create a new .NET Console Application. Open your command prompt or terminal and navigate to the directory where you want to create your new project. Run the following command to create a new console app:

    dotnet new console -o OpenGraphIoDemo
  • Navigate to the new project directory:

    cd OpenGraphIoDemo
  • Install the OpenGraphIo NuGet package:

    dotnet add package OpenGraphIo --version 1.0.3
  • Open the Program.cs file in your project's directory in a text editor or Integrated Development Environment (IDE).
  • Replace the existing code with the following, which is an example of how to use the OpenGraphIO library:

    using System;
    using System.Threading.Tasks;
    class Program
        static async Task Main(string[] args)
            // Replace "YOUR_APP_ID" with your actual OpenGraph.io App ID.
            var options = new OpenGraphIOOptions
                AppId = "YOUR_APP_ID",
                CacheOk = true,
                // Add other options as needed.
            var ogClient = new OpenGraphIO(options);
            var url = "https://www.example.com"; // Replace with the URL you want to retrieve Open Graph data for.
                string result = await ogClient.GetSiteInfo(url);
                Console.WriteLine(result); // Output the Open Graph data as a JSON string.
            catch (Exception ex)
                Console.WriteLine($"Error occurred: {ex.Message}");
  • Make sure to replace "YOUR_APP_ID" with your actual OpenGraph.io App ID. To get a free key, sign up at OpenGraph.io.
  • Run the application:

    dotnet run

This will fetch the Open Graph information from the specified URL and print it to the console as a JSON string. Note that you can adjust the options as needed, based on the OpenGraphIOOptions detailed in the documentation.