Use var instead.

src/ImageSharp/Formats/Png/ImageExtensions.cs

@@ -46,7 +46,7 @@ namespace ImageSharp
         public static Image<TPixel> SaveAsPng<TPixel>(this Image<TPixel> source, Stream stream, IPngEncoderOptions options)
             where TPixel : struct, IPixel<TPixel>
         {
-            PngEncoder encoder = new PngEncoder();
+            var encoder = new PngEncoder();
             encoder.Encode(source, stream, options);
 
             return source;

src/ImageSharp/Image/Image.FromBytes.cs

@@ -126,7 +126,7 @@ namespace ImageSharp
         public static Image<TPixel> Load<TPixel>(Configuration config, byte[] data, IDecoderOptions options)
             where TPixel : struct, IPixel<TPixel>
         {
-            using (MemoryStream ms = new MemoryStream(data))
+            using (var ms = new MemoryStream(data))
             {
                 return Load<TPixel>(config, ms, options);
             }
@@ -143,7 +143,7 @@ namespace ImageSharp
         public static Image<TPixel> Load<TPixel>(byte[] data, IImageDecoder decoder, IDecoderOptions options)
             where TPixel : struct, IPixel<TPixel>
         {
-            using (MemoryStream ms = new MemoryStream(data))
+            using (var ms = new MemoryStream(data))
             {
                 return Load<TPixel>(ms, decoder, options);
             }