ImageSharp

ImageSharp is a new, fully featured, fully managed, cross-platform, 2D graphics API.

Without the use of System.Drawing we have been able to develop something much more flexible, easier to code against, and much, much less prone to memory leaks. Gone are system-wide process-locks; ImageSharp images are thread-safe and fully supported in web environments.

Built against .Net Standard 1.1 ImageSharp can be used in device, cloud, and embedded/IoT scenarios.

Questions?

Do you have questions? We are happy to help! Please join our gitter channel, or ask them on stackoverflow using the ImageSharp tag.

Installation

Package Name	Release (NuGet)	Nightly (MyGet)
SixLabors.ImageSharp
SixLabors.ImageSharp.Drawing

Packages

The ImageSharp library is made up of multiple packages:

• SixLabors.ImageSharp

  • Contains the generic Image<TPixel> class, PixelFormats, Primitives, Configuration, and other core functionality.
  • The IImageFormat interface, Jpeg, Png, Bmp, and Gif formats.
  • Transform methods like Resize, Crop, Skew, Rotate - Anything that alters the dimensions of the image.
  • Non-transform methods like Gaussian Blur, Pixelate, Edge Detection - Anything that maintains the original image dimensions.

• SixLabors.ImageSharp.Drawing

  • Brushes and various drawing algorithms, including drawing images.
  • Various vector drawing methods for drawing paths, polygons etc.
  • Text drawing.

Build Status

	Build Status	Code Coverage
Linux/Mac
Windows

Features

There's plenty there and more coming. Check out the current features!

API

Here's an example of the code required to resize an image using the default Bicubic resampler then turn the colors into their grayscale equivalent using the BT709 standard matrix.

On platforms supporting netstandard 1.3+

// Image.Load(string path) is a shortcut for our default type. Other pixel formats use Image.Load<TPixel>(string path))
using (Image<Rgba32> image = Image.Load("foo.jpg"))
{
    image.Mutate(x => x
         .Resize(image.Width / 2, image.Height / 2)
         .Grayscale());
    image.Save("bar.jpg"); // automatic encoder selected based on extension.
}

on netstandard 1.1 - 1.2

// Image.Load(Stream stream) is a shortcut for our default type. Other pixel formats use Image.Load<TPixel>(Stream stream))
using (FileStream stream = File.OpenRead("foo.jpg"))
using (FileStream output = File.OpenWrite("bar.jpg"))
using (Image<Rgba32> image = Image.Load<Rgba32>(stream))
{
    image.Mutate(x => x
         .Resize(image.Width / 2, image.Height / 2)
         .Grayscale());
    image.Save(output);
}

Setting individual pixel values can be perfomed as follows:

// Individual pixels
using (Image<Rgba32> image = new Image<Rgba32>(400, 400))
{
    image[200, 200] = Rgba32.White;
}

Rgba32 is our default PixelFormat, equivalent to System.Drawing Color. For advanced pixel format usage there are multiple PixelFormat implementations available allowing developers to implement their own color models in the same manner as Microsoft XNA Game Studio and MonoGame.

All in all this should allow image processing to be much more accessible to developers which has always been my goal from the start.

Check out this blog post or our Samples Repository for more examples!

Manual build

If you prefer, you can compile ImageSharp yourself (please do and help!), you'll need:

• Visual Studio 2017 (or above)
• The .NET Core SDK Installer - Non VSCode link.

Alternatively on Linux you can use:

• Visual Studio Code with C# Extension
• .Net Core

To clone it locally click the "Clone in Windows" button above or run the following git commands.

git clone https://github.com/SixLabors/ImageSharp

How can you help?

Please... Spread the word, contribute algorithms, submit performance improvements, unit tests, no input is too little.

The ImageSharp Team

Grand High Eternal Dictator

• James Jackson-South

Core Team

• Dirk Lemstra
• Anton Firsov
• Scott Williams

Backers

Support us with a monthly donation and help us continue our activities. [Become a backer]

Sponsors

Become a sponsor and get your logo on our README on Github with a link to your site. [Become a sponsor]