diff --git a/QuickLook.Plugin/QuickLook.Plugin.ImageViewer/AnimatedImage/Providers/PdnProvider.cs b/QuickLook.Plugin/QuickLook.Plugin.ImageViewer/AnimatedImage/Providers/PdnProvider.cs
deleted file mode 100644
index d4f78ef..0000000
--- a/QuickLook.Plugin/QuickLook.Plugin.ImageViewer/AnimatedImage/Providers/PdnProvider.cs
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright © 2017-2025 QL-Win Contributors
-//
-// This file is part of QuickLook program.
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-using QuickLook.Common.Helpers;
-using QuickLook.Common.Plugin;
-using System;
-using System.IO;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Media.Animation;
-using System.Windows.Media.Imaging;
-using System.Xml.Linq;
-
-namespace QuickLook.Plugin.ImageViewer.AnimatedImage.Providers;
-
-internal class PdnProvider : AnimationProvider
-{
-    public PdnProvider(Uri path, MetaProvider meta, ContextObject contextObject) : base(path, meta, contextObject)
-    {
-        Animator = new Int32AnimationUsingKeyFrames();
-        Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(0,
-            KeyTime.FromTimeSpan(TimeSpan.Zero)));
-    }
-
-    public override Task<BitmapSource> GetThumbnail(Size renderSize)
-    {
-        // Skip thumbnail
-        return new Task<BitmapSource>(() => null);
-    }
-
-    public override Task<BitmapSource> GetRenderedFrame(int index)
-    {
-        return new Task<BitmapSource>(() =>
-        {
-            try
-            {
-                using TextReader reader = new StreamReader(Path.LocalPath, Encoding.UTF8);
-                string line = reader.ReadLine();
-
-                if (!line.StartsWith("PDN"))
-                    return null;
-
-                int indexOfStart = line.IndexOf("<");
-                int indexOfEnd = line.LastIndexOf(">");
-
-                if (indexOfStart < 0 || indexOfEnd < 0)
-                    return null;
-
-                string xml = line.Substring(indexOfStart, indexOfEnd - indexOfStart + 1);
-
-                // <pdnImage>
-                //   <custom>
-                //     <thumb png="..." />
-                //   </custom>
-                // </pdnImage>
-                XDocument doc = XDocument.Parse(xml);
-                var pngBase64 = doc.Root
-                    ?.Element("custom")
-                    ?.Element("thumb")
-                    ?.Attribute("png")
-                    ?.Value;
-
-                if (pngBase64 != null)
-                {
-                    byte[] imageBytes = Convert.FromBase64String(pngBase64);
-                    MemoryStream ms = new(imageBytes);
-                    BitmapImage bitmap = new();
-                    bitmap.BeginInit();
-                    bitmap.CacheOption = BitmapCacheOption.OnLoad;
-                    bitmap.StreamSource = ms;
-                    bitmap.EndInit();
-                    bitmap.Freeze();
-                    return bitmap;
-                }
-
-                return null;
-            }
-            catch (Exception e)
-            {
-                ProcessHelper.WriteLog(e.ToString());
-                return null;
-            }
-        });
-    }
-
-    public override void Dispose()
-    {
-    }
-}
diff --git a/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Handler.cs b/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Handler.cs
index 259a8d1..a5c77bf 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Handler.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Handler.cs
@@ -21,6 +21,7 @@ using PureSharpCompress.Readers;
 using QuickLook.Common.Helpers;
 using QuickLook.Common.Plugin;
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Windows;
@@ -30,8 +31,18 @@ namespace QuickLook.Plugin.ThumbnailViewer;
 
 internal static class Handler
 {
+    // List<Pair<formats, type>>
+    public static List<KeyValuePair<string[], Type>> Providers = [];
+
     public static void Prepare(string path, ContextObject context)
     {
+        // Temporary codes
+        if (path.EndsWith(".pdn", StringComparison.OrdinalIgnoreCase))
+        {
+            new PdnProvider().Prepare(path, context);
+            return;
+        }
+
         try
         {
             using Stream imageData = ViewImage(path);
@@ -47,6 +58,12 @@ internal static class Handler
 
     public static Stream ViewImage(string path)
     {
+        // Temporary codes
+        if (path.EndsWith(".pdn", StringComparison.OrdinalIgnoreCase))
+        {
+            return new PdnProvider().ViewImage(path);
+        }
+
         try
         {
             using ZipArchive archive = ZipArchive.Open(path, new());
diff --git a/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Plugin.cs b/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Plugin.cs
index 4016078..47a9c1f 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Plugin.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Plugin.cs
@@ -34,6 +34,7 @@ public class Plugin : IViewer
         ".cdr", // CorelDraw
         ".fig", // Figma
         ".kra", // Krita
+        ".pdn", // Paint.NET
         ".pip", ".pix", // Pixso
         ".sketch", // Sketch
         ".xd", // AdobeXD
@@ -46,6 +47,8 @@ public class Plugin : IViewer
 
     public void Init()
     {
+        Handler.Providers.Add(new KeyValuePair<string[], Type>(
+            [".pdn"], typeof(PdnProvider)));
     }
 
     public bool CanHandle(string path)
diff --git a/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Providors/PdnProvider.cs b/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Providors/PdnProvider.cs
new file mode 100644
index 0000000..a86d1e4
--- /dev/null
+++ b/QuickLook.Plugin/QuickLook.Plugin.ThumbnailViewer/Providors/PdnProvider.cs
@@ -0,0 +1,93 @@
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using QuickLook.Common.Helpers;
+using QuickLook.Common.Plugin;
+using QuickLook.Plugin.ImageViewer;
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+using System.Windows;
+using System.Windows.Media.Imaging;
+using System.Xml.Linq;
+
+namespace QuickLook.Plugin.ThumbnailViewer;
+
+internal class PdnProvider
+{
+    public void Prepare(string path, ContextObject context)
+    {
+        try
+        {
+            using Stream imageData = ViewImage(path);
+            BitmapImage bitmap = imageData.ReadAsBitmapImage();
+            context.SetPreferredSizeFit(new Size(bitmap.PixelWidth, bitmap.PixelHeight), 0.8d);
+        }
+        catch (Exception ex)
+        {
+            Debug.WriteLine($"Error reading thumbnail from {path}: {ex.Message}");
+            context.PreferredSize = new Size { Width = 800, Height = 600 };
+        }
+    }
+
+    public Stream ViewImage(string path)
+    {
+        try
+        {
+            using TextReader reader = new StreamReader(path, Encoding.UTF8);
+            string line = reader.ReadLine();
+
+            if (!line.StartsWith("PDN"))
+                return null;
+
+            int indexOfStart = line.IndexOf("<");
+            int indexOfEnd = line.LastIndexOf(">");
+
+            if (indexOfStart < 0 || indexOfEnd < 0)
+                return null;
+
+            string xml = line.Substring(indexOfStart, indexOfEnd - indexOfStart + 1);
+
+            // <pdnImage>
+            //   <custom>
+            //     <thumb png="..." />
+            //   </custom>
+            // </pdnImage>
+            XDocument doc = XDocument.Parse(xml);
+            var pngBase64 = doc.Root
+                ?.Element("custom")
+                ?.Element("thumb")
+                ?.Attribute("png")
+                ?.Value;
+
+            if (pngBase64 != null)
+            {
+                byte[] imageBytes = Convert.FromBase64String(pngBase64);
+                MemoryStream ms = new(imageBytes);
+                return ms;
+            }
+
+            return null;
+        }
+        catch (Exception e)
+        {
+            ProcessHelper.WriteLog(e.ToString());
+            return null;
+        }
+    }
+}