diff --git a/Wox/Extensions/VisibilityExtensions.cs b/Wox/Extensions/VisibilityExtensions.cs
new file mode 100644
index 0000000000..d489c0a0f6
--- /dev/null
+++ b/Wox/Extensions/VisibilityExtensions.cs
@@ -0,0 +1,17 @@
+using System.Windows;
+
+namespace Wox.Extensions
+{
+    public static class VisibilityExtensions
+    {
+        public static bool IsVisible(this Visibility visibility)
+        {
+            return visibility == Visibility.Visible;
+        }
+
+        public static bool IsNotVisible(this Visibility visibility)
+        {
+            return !visibility.IsVisible();
+        }
+    }
+}
diff --git a/Wox/Wox.csproj b/Wox/Wox.csproj
index 89de06548b..cce82657f9 100644
--- a/Wox/Wox.csproj
+++ b/Wox/Wox.csproj
@@ -124,6 +124,7 @@
     <Compile Include="Converters\StringEmptyConverter.cs" />
     <Compile Include="Converters\StringNullOrEmptyToVisibilityConverter.cs" />
     <Compile Include="Converters\VisibilityConverter.cs" />
+    <Compile Include="Extensions\VisibilityExtensions.cs" />
     <Compile Include="Helper\SingletonWindowOpener.cs" />
     <Compile Include="ImageLoader\ImageCacheStroage.cs" />
     <Compile Include="NotifyIconManager.cs" />