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Marcin Jamro, PhD, DSc
How to set JPEG quality with SkiaSharp?
C# | .NET | ASP.NET
If you want to specify the JPEG quality, just use the second parameter of the Encode
method, as shown in the following code snippet:
using SKBitmap bitmap = new(/* Width */, /* Height */); using SKCanvas canvas = new(bitmap); /* Drawing */ canvas.Flush(); using SKImage target = SKImage.FromBitmap(bitmap); using SKData data = target.Encode(SKEncodedImageFormat.Jpeg, 90); data.SaveTo(/* Stream */);
The full working example is provided below:
using SkiaSharp; const int width = 1920; const int height = 1080; using SKBitmap bitmap = new(width, height); using SKCanvas canvas = new(bitmap); using SKPaint red = new() { Color = new SKColor(255, 0, 0) }; using SKPaint white = new() { Color = new SKColor(255, 255, 255) }; int yMiddle = height / 2; canvas.DrawRect(100, 100, width - 200, yMiddle - 100, white); canvas.DrawRect(100, yMiddle, width - 200, yMiddle - 100, red); canvas.Flush(); using SKImage target = SKImage.FromBitmap(bitmap); using SKData data = target.Encode(SKEncodedImageFormat.Jpeg, 90); using FileStream stream = new("image.jpg", FileMode.Create); data.SaveTo(stream);
Of course, you should not forget to install the SkiaSharp
package from the NuGet package manager.
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Hello, I am Marcin
Reliable entrepreneur with 10+ years of companies operation, such as CEO at a few IT companies. I was an author of a few software & hardware products, still open to new ideas & cooperation.
Helpful expert with 10+ years of experience, together with PhD and DSc in Computer Science. I was an author of books and publications, as well as an expert in international projects.
Experienced developer with 10+ years of development and 100+ completed projects. I worked on various complex international projects, e.g. at Microsoft in USA and as CTO at a few companies. I have MCP, MCTS and MCPD certificates.
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