PhotoSauce.NativeCodecs.Libpng 1.6.43-preview2

Prefix Reserved
This is a prerelease version of PhotoSauce.NativeCodecs.Libpng.
dotnet add package PhotoSauce.NativeCodecs.Libpng --version 1.6.43-preview2                
NuGet\Install-Package PhotoSauce.NativeCodecs.Libpng -Version 1.6.43-preview2                
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="PhotoSauce.NativeCodecs.Libpng" Version="1.6.43-preview2" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add PhotoSauce.NativeCodecs.Libpng --version 1.6.43-preview2                
#r "nuget: PhotoSauce.NativeCodecs.Libpng, 1.6.43-preview2"                
#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 PhotoSauce.NativeCodecs.Libpng as a Cake Addin
#addin nuget:?package=PhotoSauce.NativeCodecs.Libpng&version=1.6.43-preview2&prerelease

// Install PhotoSauce.NativeCodecs.Libpng as a Cake Tool
#tool nuget:?package=PhotoSauce.NativeCodecs.Libpng&version=1.6.43-preview2&prerelease                


This MagicScaler plugin wraps the libpng native PNG codec.

Windows includes a PNG codec that is auto-discoverable by the MagicScaler pipeline. This plugin adds PNG support on non-Windows platforms or may be used on Windows for improved capabilities.


A compatible native binary must be present for this plugin to function. For convenience, the NuGet package includes native binaries for Windows (x86, x64, and ARM64) and Linux (glibc x64 and ARM64).

Standard releases of libpng are not usable reliably from .NET; a custom build is required. A vcpkg port containing the customizations is located in the PhotoSauce GitHub repo if you need to build for a platform not included in this package.


Codec Registration

To register the codec, call the UseLibpng extension method from your CodecManager.Configure action at app startup. By default, the plugin will remove/replace the Windows PNG codec if it is present.

using PhotoSauce.MagicScaler;
using PhotoSauce.NativeCodecs.Libpng;

CodecManager.Configure(codecs => {

Using the Codec

Once registered, the codec will automatically detect and decode compatible images.

To encode PNG images, the encoder MIME type can be set on ProcessImageSettings:

var settings = new ProcessImageSettings();

Or the encoder can be selected by file extension on overloads accepting file paths:

MagicImageProcessor.ProcessImage(@"\img\input.jpeg", @"\img\output.png", settings);

Animated PNG Support

APNG decode is enabled by default in this codec, but encode is currently disabled due to an intermittent memory corruption bug in APNG-patched libpng.

You can enable APNG encoding for testing purposes by setting the PhotoSauce.NativeCodecs.Libpng.EnableApngEncode switch at app startup using AppContext or runtimeconfig.json.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  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 is compatible.  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 netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 is compatible.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 is compatible.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  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.

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
1.6.43-preview2 24,601 3/6/2024
1.6.43-preview1 75 3/6/2024
1.6.39-preview1 41,119 10/12/2023
1.6.37-preview1 51,720 11/8/2022

See for release-specific notes.