diff --git a/ShareX.HelpersLib/ExternalProgram.cs b/ShareX.HelpersLib/ExternalProgram.cs
index 239e54f05..17deb7220 100644
--- a/ShareX.HelpersLib/ExternalProgram.cs
+++ b/ShareX.HelpersLib/ExternalProgram.cs
@@ -79,8 +79,6 @@ public string Run(string filePath)
                         }
                         else
                         {
-                            string args = Args.Replace("%filepath%", '"' + filePath + '"').Replace("%input", '"' + filePath + '"');
-
                             if (!string.IsNullOrEmpty(OutputExtension))
                             {
                                 newFilePath = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(filePath), System.IO.Path.GetFileNameWithoutExtension(filePath));
@@ -91,10 +89,9 @@ public string Run(string filePath)
                                 }
 
                                 newFilePath += OutputExtension;
-                                args = args.Replace("%output", '"' + newFilePath + '"');
                             }
 
-                            psi.Arguments = args;
+                            psi.Arguments = CodeMenuEntryActions.Parse(Args, filePath, newFilePath);
                         }
 
                         if (HiddenWindow)
diff --git a/ShareX.HelpersLib/NameParser/CodeMenuEntryActions.cs b/ShareX.HelpersLib/NameParser/CodeMenuEntryActions.cs
index 7c5c94ad3..862c2100d 100644
--- a/ShareX.HelpersLib/NameParser/CodeMenuEntryActions.cs
+++ b/ShareX.HelpersLib/NameParser/CodeMenuEntryActions.cs
@@ -31,11 +31,23 @@ public class CodeMenuEntryActions : CodeMenuEntry
     {
         protected override string Prefix { get; } = "%";
 
-        public static readonly CodeMenuEntryActions FilePath = new CodeMenuEntryActions("input", Resources.ActionsCodeMenuEntry_FilePath_File_path);
-        public static readonly CodeMenuEntryActions OutputFilePath = new CodeMenuEntryActions("output", Resources.ActionsCodeMenuEntry_OutputFilePath_File_path_without_extension____Output_file_name_extension_);
+        public static readonly CodeMenuEntryActions input = new CodeMenuEntryActions("input", Resources.ActionsCodeMenuEntry_FilePath_File_path);
+        public static readonly CodeMenuEntryActions output = new CodeMenuEntryActions("output", Resources.ActionsCodeMenuEntry_OutputFilePath_File_path_without_extension____Output_file_name_extension_);
 
         public CodeMenuEntryActions(string value, string description) : base(value, description)
         {
         }
+
+        public static string Parse(string pattern, string inputPath, string outputPath)
+        {
+            string result = pattern.Replace(input.ToPrefixString(), '"' + inputPath + '"');
+
+            if (!string.IsNullOrEmpty(outputPath))
+            {
+                result.Replace(output.ToPrefixString(), '"' + outputPath + '"');
+            }
+
+            return result;
+        }
     }
 }
\ No newline at end of file