Open Source C# .NET Library for 2D Graphics

Getting Started with ImageSharp

A Stable release is available on NuGet For beta versions, make sure that the Include Prerelease switch is enabled. Development releases are available via MyGet.

Install-Package SixLabors.ImageSharp -Version number 

C# API to Resize Images

The ImageSharp library allows C# .NET programmers to resize images inside their own .NET applications. Resizing an image requires the process of generating and iterating through the pixels of a target image and sampling areas of a source image to choose what color to implement for each pixel. You can easily set the algorithm when processing images, such as Bicubic, Hermite, Box, CatmullRom, Lanczos2, and more. Apart from the basic resizing operations, ImageSharp also offers more advanced features.

// Load File 
using (Image image = Image.Load("fileformat.jpg"))
{
  // Resize file 
  image.Mutate(x => x
      .Resize(image.Width / 2, image.Height / 2)
      .greyscale());
  // Save
  image.Save("fileformat_out.jpg");
}                
                  

Draw Watermark on Image

Usually, people protect their images by putting a large watermark overlaid to prevent people from using the images without authorization. The ImageSharp library provides support for adding watermarks to images inside C++ applications. To start you need a font family and you can easily get one from the system font store. Drawn the text over the image & grey it with 50% opacity.

Draw Text Along a Path & Apply Effect to Image

The ImageSharp library allows C# .NET developers to draw some text following the contours of a path. It is recommended to create a font collection. First, let’s generate the text as a set of vectors drawn along the path. After drawing the path so we can see what the text is supposed to be following. The ImageSharp API also allows to apply various types of effects to images only inside a shape.

namespace CustomImageProcessor
{
    static class Program
    {
        static void Main(string[] args)
        {
            System.IO.Directory.CreateDirectory("output");

            using (Image image = Image.Load("fb.jpg"))
            {
                var outerRadii = Math.Min(image.Width, image.Height) / 2;
                var star = new Star(new PointF(image.Width / 2, image.Height / 2), 5, outerRadii / 2, outerRadii);

                using (var clone = image.Clone(p =>
                {
                    p.GaussianBlur(15); // apply the effect here you and inside the shape
                }))
                {
                    clone.Mutate(x => x.Crop((Rectangle)star.Bounds));
                    var brush = new ImageBrush(clone);

                    // cloned image with the effects applied
                    image.Mutate(c => c.Fill(brush, star));
                }

                image.Save("output/fb.png");
            }
        }
    }
}