diff --git a/WinThumbsPreloader/WinThumbsPreloader/AboutForm.resx b/WinThumbsPreloader/WinThumbsPreloader/AboutForm.resx
index 0b6da0c..9af6f86 100644
--- a/WinThumbsPreloader/WinThumbsPreloader/AboutForm.resx
+++ b/WinThumbsPreloader/WinThumbsPreloader/AboutForm.resx
@@ -181,7 +181,7 @@
     <value>Bottom</value>
   </data>
   <data name="BorderBottom.Location" type="System.Drawing.Point, System.Drawing">
-    <value>0, 287</value>
+    <value>0, 315</value>
   </data>
   <data name="BorderBottom.Size" type="System.Drawing.Size, System.Drawing">
     <value>386, 1</value>
@@ -205,7 +205,7 @@
     <value>Bottom</value>
   </data>
   <data name="BottomPanel.Location" type="System.Drawing.Point, System.Drawing">
-    <value>0, 288</value>
+    <value>0, 316</value>
   </data>
   <data name="BottomPanel.Size" type="System.Drawing.Size, System.Drawing">
     <value>386, 43</value>
@@ -361,25 +361,26 @@
     <value>20, 20, 20, 20</value>
   </data>
   <data name="RichTextBox.Size" type="System.Drawing.Size, System.Drawing">
-    <value>356, 198</value>
+    <value>356, 226</value>
   </data>
   <data name="RichTextBox.TabIndex" type="System.Int32, mscorlib">
     <value>3</value>
   </data>
   <data name="RichTextBox.Text" xml:space="preserve">
-    <value>To use this app start with a right click on a folder to call the context menu and select WinThumbsPreloader &gt; Preload thumbnails in the menu.
-
-Also you can launch the app from command line:
-Usage:
-    WinThumbsPreloader.exe [-r] &lt;path&gt;
-Options:
-    -r Recursively preload thumbnails in nested folders.
-    -s Silent mode - don't show a progress dialog.
-
-
-Website: https://bruhov.com/WinThumbsPreloader
-Project page: https://github.com/bruhov/WinThumbsPreloader
-
+    <value>To use this app start with a right click on a folder to call the context menu and select WinThumbsPreloader &gt; Preload thumbnails in the menu.
+
+Also you can launch the app from command line:
+Usage:
+    WinThumbsPreloader.exe [-r] &lt;path&gt;
+Options:
+    -r Recursively preload thumbnails in nested folders.
+    -s Silent mode - don't show a progress dialog.
+    -m Multi-Threaded mode
+
+
+Website: https://bruhov.com/WinThumbsPreloader
+Project page: https://github.com/bruhov/WinThumbsPreloader
+
 Copyright (c) 2018 Dmitry Bruhov</value>
   </data>
   <data name="&gt;&gt;RichTextBox.Name" xml:space="preserve">
@@ -404,7 +405,7 @@ Copyright (c) 2018 Dmitry Bruhov</value>
     <value>15, 10, 15, 10</value>
   </data>
   <data name="ContentPanel.Size" type="System.Drawing.Size, System.Drawing">
-    <value>386, 218</value>
+    <value>386, 246</value>
   </data>
   <data name="ContentPanel.TabIndex" type="System.Int32, mscorlib">
     <value>10</value>
@@ -428,7 +429,7 @@ Copyright (c) 2018 Dmitry Bruhov</value>
     <value>6, 13</value>
   </data>
   <data name="$this.ClientSize" type="System.Drawing.Size, System.Drawing">
-    <value>386, 331</value>
+    <value>386, 359</value>
   </data>
   <data name="$this.StartPosition" type="System.Windows.Forms.FormStartPosition, System.Windows.Forms">
     <value>CenterScreen</value>
diff --git a/WinThumbsPreloader/WinThumbsPreloader/DirectoryScanner.cs b/WinThumbsPreloader/WinThumbsPreloader/DirectoryScanner.cs
index b8f62a6..df2e600 100644
--- a/WinThumbsPreloader/WinThumbsPreloader/DirectoryScanner.cs
+++ b/WinThumbsPreloader/WinThumbsPreloader/DirectoryScanner.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -28,6 +28,19 @@ public IEnumerable<string> GetItems()
             }
         }
 
+        public List<string> GetItemsBulk() {
+            List<string> items = new List<string>();
+            if (includeNestedDirectories)
+            {
+                foreach (string item in GetItemsNested()) items.Add(item);
+            }
+            else
+            {
+                foreach (string item in GetItemsOnlyFirstLevel()) items.Add(item);
+            }
+            return items;
+        }
+
         private IEnumerable<string> GetItemsOnlyFirstLevel()
         {
             string[] items = null;
diff --git a/WinThumbsPreloader/WinThumbsPreloader/Options.cs b/WinThumbsPreloader/WinThumbsPreloader/Options.cs
index cf28bde..3a5234b 100644
--- a/WinThumbsPreloader/WinThumbsPreloader/Options.cs
+++ b/WinThumbsPreloader/WinThumbsPreloader/Options.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -13,21 +13,39 @@ class Options
         public bool includeNestedDirectories;
         public bool silentMode;
         public string path;
+        public bool multithreaded;
 
         public Options(string[] arguments)
         {
-            badArguments = (arguments.Length == 0 || arguments.Length > 2);
+            //Check if we have more arguments than we support
+            badArguments = (arguments.Length == 0 || arguments.Length > 4);
             if (badArguments) return;
 
-            bool optionsProvided = (arguments.Length == 2);
-            string rawOptions = (optionsProvided ? arguments[0] : "");
-            path = arguments[optionsProvided ? 1 : 0];
+            //Set default options
+            includeNestedDirectories = false;
+            silentMode = false;
+            multithreaded = false;
+            //Set the options the user wants from the arguments
+            foreach (string argu in arguments) {
+                switch (argu) {
+                    case "-r":
+                        includeNestedDirectories = true;
+                        break;
+                    case "-s":
+                        silentMode = true;
+                        break;
+                    case "-m":
+                        multithreaded = true;
+                        break;
+                    default:
+                        path = argu;
+                        break;
+                }
+            }
 
+            //Check if the path we grabbed is real
             badArguments = !Directory.Exists(path);
             if (badArguments) return;
-
-            includeNestedDirectories = rawOptions.Contains("r");
-            silentMode = rawOptions.Contains("s");
         }
     }
 }
diff --git a/WinThumbsPreloader/WinThumbsPreloader/Program.cs b/WinThumbsPreloader/WinThumbsPreloader/Program.cs
index 3f8209a..65e65f8 100644
--- a/WinThumbsPreloader/WinThumbsPreloader/Program.cs
+++ b/WinThumbsPreloader/WinThumbsPreloader/Program.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.IO;
 using System.Windows.Forms;
 
@@ -29,7 +29,7 @@ static void Main(string[] arguments)
             }
             else
             {
-                new ThumbnailsPreloader(options.path, options.includeNestedDirectories, options.silentMode);
+                new ThumbnailsPreloader(options.path, options.includeNestedDirectories, options.silentMode, options.multithreaded);
                 Application.Run();
             }
         }
diff --git a/WinThumbsPreloader/WinThumbsPreloader/ThumbnailPreloader.cs b/WinThumbsPreloader/WinThumbsPreloader/ThumbnailPreloader.cs
index 8c2477b..11a8a05 100644
--- a/WinThumbsPreloader/WinThumbsPreloader/ThumbnailPreloader.cs
+++ b/WinThumbsPreloader/WinThumbsPreloader/ThumbnailPreloader.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Runtime.InteropServices;
 using System.Windows.Forms;
 
@@ -176,4 +176,4 @@ public enum WTS_ALPHATYPE : uint
             WTSAT_ARGB = 2
         }
     }
-}
\ No newline at end of file
+}
diff --git a/WinThumbsPreloader/WinThumbsPreloader/ThumbnailsPreloader.cs b/WinThumbsPreloader/WinThumbsPreloader/ThumbnailsPreloader.cs
index 5ff8cd4..1a235ae 100644
--- a/WinThumbsPreloader/WinThumbsPreloader/ThumbnailsPreloader.cs
+++ b/WinThumbsPreloader/WinThumbsPreloader/ThumbnailsPreloader.cs
@@ -1,8 +1,9 @@
-using System;
-using System.Threading.Tasks;
+using System;
 using System.Windows.Forms;
 using System.IO;
 using WinThumbsPreloader.Properties;
+using System.Threading.Tasks;
+using System.Collections.Generic;
 
 namespace WinThumbsPreloader
 {
@@ -22,13 +23,15 @@ class ThumbnailsPreloader
         private ProgressDialog progressDialog;
         private Timer progressDialogUpdateTimer;
 
+        protected bool _multiThreaded;
+
         public ThumbnailsPreloaderState state = ThumbnailsPreloaderState.GettingNumberOfItems;
         public ThumbnailsPreloaderState prevState = ThumbnailsPreloaderState.New;
         public int totalItemsCount = 0;
         public int processedItemsCount = 0;
         public string currentFile = "";
 
-        public ThumbnailsPreloader(string path, bool includeNestedDirectories, bool silentMode)
+        public ThumbnailsPreloader(string path, bool includeNestedDirectories, bool silentMode, bool multiThreaded)
         {
             directoryScanner = new DirectoryScanner(path, includeNestedDirectories);
             if (!silentMode)
@@ -36,6 +39,7 @@ public ThumbnailsPreloader(string path, bool includeNestedDirectories, bool sile
                 InitProgressDialog();
                 InitProgressDialogUpdateTimer();
             }
+            _multiThreaded = multiThreaded;
             Run();
         }
 
@@ -112,14 +116,32 @@ await Task.Run(() =>
                 //Start processing
                 state = ThumbnailsPreloaderState.Processing;
                 ThumbnailPreloader thumbnailPreloader = new ThumbnailPreloader();
-                foreach (string item in directoryScanner.GetItems())
+                //Get the items first before doing work
+                List<string> items = directoryScanner.GetItemsBulk();
+                if (!_multiThreaded)
                 {
-                    currentFile = item;
-                    thumbnailPreloader.PreloadThumbnail(item);
-                    processedItemsCount++;
-                    if (processedItemsCount == totalItemsCount) state = ThumbnailsPreloaderState.Done;
-                    if (state == ThumbnailsPreloaderState.Canceled) return;
+                    foreach (string item in items)
+                    {
+                        currentFile = item;
+                        thumbnailPreloader.PreloadThumbnail(item);
+                        processedItemsCount++;
+                        if (processedItemsCount == totalItemsCount) state = ThumbnailsPreloaderState.Done;
+                        if (state == ThumbnailsPreloaderState.Canceled) return;
+                    }
                 }
+                else {
+                    Parallel.ForEach(
+                        items,
+                        new ParallelOptions { MaxDegreeOfParallelism = 2048 },
+                        item =>
+                        {
+                            currentFile = item;
+                            thumbnailPreloader.PreloadThumbnail(item);
+                            processedItemsCount++;
+                            if (processedItemsCount == totalItemsCount) state = ThumbnailsPreloaderState.Done;
+                            if (state == ThumbnailsPreloaderState.Canceled) return;
+                        });
+                }       
             });
             Application.Exit();
         }