diff --git a/SpineViewer/Extensions/SFMLExtension.cs b/Spine/Exporters/Extension.cs
similarity index 69%
rename from SpineViewer/Extensions/SFMLExtension.cs
rename to Spine/Exporters/Extension.cs
index 6882a3a..f6295a0 100644
--- a/SpineViewer/Extensions/SFMLExtension.cs
+++ b/Spine/Exporters/Extension.cs
@@ -1,18 +1,14 @@
 using SFML.Graphics;
 using SFML.System;
-using SkiaSharp;
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
-using System.Runtime.InteropServices;
 using System.Text;
 using System.Threading.Tasks;
-using System.Windows;
 
-namespace SpineViewer.Extensions
+namespace Spine.Exporters
 {
-    public static class SFMLExtension
+    public static class Extension
     {
         /// <summary>
         /// 获取适合指定画布参数下能够覆盖包围盒的画布视区包围盒
@@ -53,31 +49,11 @@ namespace SpineViewer.Extensions
         public static FloatRect GetBounds(this View self)
         {
             return new(
-                self.Center.X - self.Size.X / 2, 
-                self.Center.Y - self.Size.Y / 2, 
-                self.Size.X, 
+                self.Center.X - self.Size.X / 2,
+                self.Center.Y - self.Size.Y / 2,
+                self.Size.X,
                 self.Size.Y
             );
         }
-
-        public static FloatRect ToFloatRect(this Rect self)
-        {
-            return new((float)self.X, (float)self.Y, (float)self.Width, (float)self.Height);
-        }
-
-        public static Vector2f ToVector2f(this Size self)
-        {
-            return new((float)self.Width, (float)self.Height);
-        }
-
-        public static Vector2u ToVector2u(this Size self)
-        {
-            return new((uint)self.Width, (uint)self.Height);
-        }
-
-        public static Vector2i ToVector2i(this Size self)
-        {
-            return new((int)self.Width, (int)self.Height);
-        }
     }
 }
diff --git a/SpineViewer/Extensions/WpfExtension.cs b/SpineViewer/Extensions/WpfExtension.cs
index d5cd487..9ce86e0 100644
--- a/SpineViewer/Extensions/WpfExtension.cs
+++ b/SpineViewer/Extensions/WpfExtension.cs
@@ -1,19 +1,41 @@
-using SkiaSharp;
+using SFML.Graphics;
+using SFML.System;
+using SkiaSharp;
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Text;
 using System.Threading.Tasks;
-using System.Windows.Media;
 using System.Windows;
+using System.Windows.Media;
 using System.Windows.Media.Imaging;
-using System.Runtime.InteropServices;
 
 namespace SpineViewer.Extensions
 {
     public static class WpfExtension
     {
+        public static FloatRect ToFloatRect(this Rect self)
+        {
+            return new((float)self.X, (float)self.Y, (float)self.Width, (float)self.Height);
+        }
+
+        public static Vector2f ToVector2f(this Size self)
+        {
+            return new((float)self.Width, (float)self.Height);
+        }
+
+        public static Vector2u ToVector2u(this Size self)
+        {
+            return new((uint)self.Width, (uint)self.Height);
+        }
+
+        public static Vector2i ToVector2i(this Size self)
+        {
+            return new((int)self.Width, (int)self.Height);
+        }
+
         /// <summary>
         /// 从本地 WebP 文件读取，并保留透明度，返回一个可以直接用于 WPF Image.Source 的 BitmapSource。
         /// </summary>