OpenGraph-Net 3.2.6

.NET 5.0 This package targets .NET 5.0. The package is compatible with this framework or higher. .NET Standard 2.1 This package targets .NET Standard 2.1. The package is compatible with this framework or higher. .NET Framework 4.7.2 This package targets .NET Framework 4.7.2. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package OpenGraph-Net --version 3.2.6                

                    
                

            
NuGet\Install-Package OpenGraph-Net -Version 3.2.6
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="OpenGraph-Net" Version="3.2.6" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add OpenGraph-Net --version 3.2.6                

                    
                

            
#r "nuget: OpenGraph-Net, 3.2.6"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install OpenGraph-Net as a Cake Addin
#addin nuget:?package=OpenGraph-Net&version=3.2.6

// Install OpenGraph-Net as a Cake Tool
#tool nuget:?package=OpenGraph-Net&version=3.2.6

OpenGraphNet

AppVeyor Nuget V Nuget dl License gitter

A simple .net assembly to use to parse Open Graph information from either a URL or an HTML snippet. You can read more about the Open Graph protocol @ http://ogp.me.

Usage

These are the basic operations of the OpenGraphNet parser.

Parsing from a URL

Synchronosly parse a url:

OpenGraph graph = OpenGraph.ParseUrl("https://open.spotify.com/user/er811nzvdw2cy2qgkrlei9sqe/playlist/2lzTTRqhYS6AkHPIvdX9u3?si=KcZxfwiIR7OBPCzj20utaQ");

Use async/await to parse a url:

OpenGraph graph = await OpenGraph.ParseUrlAsync("https://open.spotify.com/user/er811nzvdw2cy2qgkrlei9sqe/playlist/2lzTTRqhYS6AkHPIvdX9u3?si=KcZxfwiIR7OBPCzj20utaQ");

Acessing Values

Accessing Metadata

Each metadata element is is stored as an array. Additionally, each element's properties are also stored as an array.

<meta property="og:image" content="http://example.com/img1.png">
<meta property="og:image:width" content="30">
<meta property="og:image" content="http://example.com/img2.png">
<meta property="og:image:width" content="60">
<meta property="og:locale" content="en">
<meta property="og:locale:alternate" content="en_US">
<meta property="og:locale:alternate" content="en_GB">

You would access the values from the sample HTML above as:

  • graph.Metadata["og:image"].First().Value // "http://example.com/img1.png".
  • graph.Metadata["og:image"].First().Properties["width"].Value() // "30".
  • graph.Metadata["og:image"][1].Value // "http://example.com/img2.png".
  • graph.Metadata["og:image"][1].Properties["width"].Value() // "30".
  • graph.Metadata["og:locale"].Value() // "en"
  • graph.Metadata["og:locale"].First().Properties["alternate"][0].Value // "en_US"
  • graph.Metadata["og:locale"].First().Properties["alternate"][1].Value // "en_GB"

Basic Metadata

The four required Open Graph properties for all pages are available as direct properties on the OpenGraph object.

  • graph.Type is a shortcut for graph.Metadata["og:type"].Value()
  • graph.Title is a shortcut for graph.Metadata["og:title"].Value()
  • graph.Image is a shortcut for graph.Metadata["og:image"].Value() Note: since there can be multiple images, this helper returns the URI of the first image. If you want to access images or child properties like og:image:width then you should instead use the graph.Metadata dictionary.
  • graph.Url is a shortcut for graph.Metadata["og:url"].Value()

Creating OpenGraph Data

To create OpenGraph data in memory use the following code:

var graph = OpenGraph.MakeGraph(
    title: "My Title", 
    type: "website", 
    image: "http://example.com/img/img1.png", 
    url: "http://example.com/home", 
    description: "My Description", 
    siteName: "Example.com");
graph.AddMetadata("og", "image", "http://example.com/img/img2.png");
graph.Metadata["og:image"][0].AddProperty("width", "30");
graph.Metadata["og:image"][1].AddProperty("width", "60");
System.Console.Write(graph.ToString());

The previous System.Console.Write(graph.ToString()); will produce the following HTML (formatting added for legibility):

<meta property="og:title" content="My Title">
<meta property="og:type" content="website">
<meta property="og:image" content="http://example.com/img/img1.png">
<meta property="og:image:width" content="30">
<meta property="og:image" content="http://example.com/img/img2.png">
<meta property="og:image:width" content="60">
<meta property="og:url" content="http://example.com/home">
<meta property="og:description" content="My Description">
<meta property="og:site_name" content="Example.com">

Writing out OpenGraph Namespaces

In the wild web sites seem to add their OpenGraph namespaces in one of 2 ways. They either write the namespaces in the html as xmlns attributes or within the head tag in the prefix attribute.

  • <html xmlns:og="http://ogp.me/ns#" xmlns:product="http://ogp.me/ns/product#">
  • <head prefix="og: http://ogp.me/ns# product: http://ogp.me/ns/product#">

xmlns: version in the html tag

To create the html version in an cshtml page after creating a new graph, use the following code:

<html @graph.HtmlXmlnsValues>

Would produce the following:

<html xmlns:og="http://ogp.me/ns#" xmlns:product="http://ogp.me/ns/product#">

prefix version in the <head> tag

To create the head version in a cshtml page, after create a new graph, use the following code:

<head prefix="@graph.HeadPrefixAttributeValue">

Would produce the following:

<head prefix="og: http://ogp.me/ns# product: http://ogp.me/ns/product#">

Writing out OpenGraph Metadata to the head tag

Below is a complete example to write out a OpenGraph metadata to a page:

@{
    var graph = OpenGraph.MakeGraph(
        title: "My Title", 
        type: "website", 
        image: "http://example.com/img/img1.png", 
        url: "http://example.com/home", 
        description: "My Description", 
        siteName: "Example.com");
}
<html>
<head prefix="@graph.HeadPrefixAttributeValue">
    @graph.ToString()
</head>
<body>
    
</body>
</html>

will produce the following HTML:

<html>
<head prefix="og: http://ogp.me/ns#">
    <meta property="og:title" content="My Title">
    <meta property="og:type" content="website">
    <meta property="og:image" content="http://example.com/img/img1.png">
    <meta property="og:url" content="http://example.com/home">
    <meta property="og:description" content="My Description">
    <meta property="og:site_name" content="Example.com">
</head>
<body>
    
</body>
</html>

It's FOSS

So please don't be afraid to fork me.

Contribution Guide

  1. Fork the OpenGraph-Net repository
  2. Create a feature branch for the item you are going to add.
  3. Add your awesome code and your unit tests to cover the new feture
  4. Run all of the tests to ensure everything is still passing.
  5. Create a pull request to our develop branch.
Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.1 is compatible. 
.NET Framework net472 is compatible.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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GitHub repositories

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Version Downloads Last updated
4.0.2-alpha.0.6 3,944 11/14/2022
4.0.1 207,502 8/12/2022
4.0.1-alpha.0.3 116 8/12/2022
4.0.1-alpha.0.2 123 8/12/2022
4.0.1-alpha.0.1 118 8/12/2022
4.0.0 4,969 8/12/2022
3.2.9-alpha.0.21 115 8/12/2022
3.2.9-alpha.0.20 118 8/12/2022
3.2.9-alpha.0.16 114 8/12/2022
3.2.9-alpha.0.15 119 8/12/2022
3.2.9-alpha.0.14 120 8/12/2022
3.2.9-alpha.0.10 112 8/12/2022
3.2.9-alpha.0.4 894 7/27/2021
3.2.9-alpha.0.3 217 7/27/2021
3.2.9-alpha.0.2 232 7/27/2021
3.2.8 165,605 7/27/2021
3.2.7 4,298 6/8/2021
3.2.7-alpha.0.40 162 6/8/2021
3.2.7-alpha.0.39 161 6/8/2021
3.2.7-alpha.0.38 168 6/8/2021
3.2.7-alpha.0.37 162 6/8/2021
3.2.7-alpha.0.35 171 6/8/2021
3.2.7-alpha.0.34 169 6/8/2021
3.2.6 32,445 1/28/2021
3.2.5 436 1/28/2021
3.2.4 69,501 3/24/2020
3.2.3 2,242 2/26/2020
3.2.2 578 2/26/2020
3.2.1 15,956 2/7/2020
3.2.0 14,655 6/15/2019
3.1.2 41,706 3/16/2019
3.1.1 880 2/28/2019
3.1.0 2,074 1/18/2019
3.0.0 13,793 12/5/2018
2.2.0 37,317 5/10/2018
2.0.0 1,320 5/2/2018
1.3.4 64,225 8/17/2016
1.3.3 1,210 8/16/2016
1.3.2 1,283 8/15/2016
1.3.1 1,268 8/15/2016
1.3.0.1 6,784 6/30/2016
1.2.0.1 8,356 4/2/2013

Added ability to parse open graph tags from body, correctly handle 301 response status code