Meziantou.Framework.SnapshotTesting.SkiaSharp 1.0.2

Prefix Reserved
.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package Meziantou.Framework.SnapshotTesting.SkiaSharp --version 1.0.2
                    


                    

                
NuGet\Install-Package Meziantou.Framework.SnapshotTesting.SkiaSharp -Version 1.0.2
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="Meziantou.Framework.SnapshotTesting.SkiaSharp" Version="1.0.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Meziantou.Framework.SnapshotTesting.SkiaSharp" Version="1.0.2" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Meziantou.Framework.SnapshotTesting.SkiaSharp" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Meziantou.Framework.SnapshotTesting.SkiaSharp --version 1.0.2
                    


                    

                
#r "nuget: Meziantou.Framework.SnapshotTesting.SkiaSharp, 1.0.2"
#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. 
#:package Meziantou.Framework.SnapshotTesting.SkiaSharp@1.0.2
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Meziantou.Framework.SnapshotTesting.SkiaSharp&version=1.0.2
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Meziantou.Framework.SnapshotTesting.SkiaSharp&version=1.0.2
                    


                            Install as a Cake Tool

Meziantou.Framework.SnapshotTesting.SkiaSharp

Meziantou.Framework.SnapshotTesting.SkiaSharp extends Meziantou.Framework.SnapshotTesting with support for SkiaSharp images, enabling snapshot validation of SKImage, SKBitmap, SKPixmap, and SKSurface objects stored as PNG, JPEG, or WebP files.

Setup

Call AddSkiaSharp() on your SnapshotSettings to register the SkiaSharp serializer and comparer:

using System.Runtime.CompilerServices;
using Meziantou.Framework.SnapshotTesting;
using Meziantou.Framework.SnapshotTesting.SkiaSharp;

internal static class SnapshotConfiguration
{
    [ModuleInitializer]
    internal static void Initialize()
    {
        SnapshotSettings.Default.AddSkiaSharp();
    }
}

Then validate images from your tests:

public sealed class SampleTests
{
    [Fact]
    public void ValidateImage()
    {
        using var bitmap = SKBitmap.Decode("sample.png");
        Snapshot.Validate(bitmap, SnapshotType.Png);
    }
}

Register once for the whole test assembly, not inside a test method. SnapshotSettings.Default is shared by every test in the process and its collections are not safe for concurrent modification, so calling AddSkiaSharp() from a test races against any other test that is serializing a snapshot at the same time. Repeated calls also append a serializer and a converter every time.

Note that SkiaSharp requires the native libraries to be available at runtime. They are included in the SkiaSharp package for Windows and macOS. On Linux, add a reference to SkiaSharp.NativeAssets.Linux.

Image comparison

By default, images are compared pixel-by-pixel (exact comparison). To allow minor rendering differences, configure a Structural Similarity Index (SSIM) threshold:

// In the module initializer shown above
SnapshotSettings.Default.AddSkiaSharp(new ImageComparisonSettings
{
    SimilarityThreshold = 0.99f, // 0.0 = completely different, 1.0 = identical
});

When SimilarityThreshold is set, the mean SSIM across the R, G, and B channels is computed and must be greater than or equal to the threshold for the images to be considered equal.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed.  net11.0 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.0.2 0 8/29/2026
1.0.1 85 8/23/2026
1.0.0 94 8/17/2026