diff --git a/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.WebSearch.UnitTests/MockSettingsInterface.cs b/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.WebSearch.UnitTests/MockSettingsInterface.cs
index a51db9165d..1e5f0533c7 100644
--- a/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.WebSearch.UnitTests/MockSettingsInterface.cs
+++ b/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.WebSearch.UnitTests/MockSettingsInterface.cs
@@ -18,6 +18,8 @@ public class MockSettingsInterface : ISettingsInterface
 
     public int HistoryItemCount { get; set; }
 
+    public string CustomSearchUri { get; }
+
     public IReadOnlyList<HistoryItem> HistoryItems => _historyItems;
 
     public MockSettingsInterface(int historyItemCount = 0, bool globalIfUri = true, List<HistoryItem> mockHistory = null)
diff --git a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Commands/SearchWebCommand.cs b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Commands/SearchWebCommand.cs
index 98921aa8ae..1f5fdb8598 100644
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Commands/SearchWebCommand.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Commands/SearchWebCommand.cs
@@ -28,12 +28,15 @@ internal sealed partial class SearchWebCommand : InvokableCommand
 
     public override CommandResult Invoke()
     {
-        if (!_browserInfoService.Open($"? {Arguments}"))
+        var uri = BuildUri();
+
+        if (!_browserInfoService.Open(uri))
         {
             // TODO GH# 138 --> actually display feedback from the extension somewhere.
             return CommandResult.KeepOpen();
         }
 
+        // remember only the query, not the full URI
         if (_settingsManager.HistoryItemCount != 0)
         {
             _settingsManager.AddHistoryItem(new HistoryItem(Arguments, DateTime.Now));
@@ -41,4 +44,28 @@ internal sealed partial class SearchWebCommand : InvokableCommand
 
         return CommandResult.Dismiss();
     }
+
+    private string BuildUri()
+    {
+        if (string.IsNullOrWhiteSpace(_settingsManager.CustomSearchUri))
+        {
+            return $"? " + Arguments;
+        }
+
+        // if the custom search URI contains query placeholder, replace it with the actual query
+        // otherwise append the query to the end of the URI
+        // support {query}, %query% or %s as placeholder
+        var placeholderVariants = new[] { "{query}", "%query%", "%s" };
+        foreach (var placeholder in placeholderVariants)
+        {
+            if (_settingsManager.CustomSearchUri.Contains(placeholder, StringComparison.OrdinalIgnoreCase))
+            {
+                return _settingsManager.CustomSearchUri.Replace(placeholder, Uri.EscapeDataString(Arguments), StringComparison.OrdinalIgnoreCase);
+            }
+        }
+
+        // is this too smart?
+        var separator = _settingsManager.CustomSearchUri.Contains('?') ? '&' : '?';
+        return $"{_settingsManager.CustomSearchUri}{separator}q={Uri.EscapeDataString(Arguments)}";
+    }
 }
diff --git a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/ISettingsInterface.cs b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/ISettingsInterface.cs
index cbbb86bbd2..cff6f8919d 100644
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/ISettingsInterface.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/ISettingsInterface.cs
@@ -18,5 +18,7 @@ public interface ISettingsInterface
 
     public IReadOnlyList<HistoryItem> HistoryItems { get; }
 
+    string CustomSearchUri { get; }
+
     public void AddHistoryItem(HistoryItem historyItem);
 }
diff --git a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/SettingsManager.cs b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/SettingsManager.cs
index 8cc7734368..0af19e14c2 100644
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/SettingsManager.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Helpers/SettingsManager.cs
@@ -41,6 +41,15 @@ public class SettingsManager : JsonSettingsManager, ISettingsInterface
         Resources.plugin_global_if_uri,
         false);
 
+    private readonly TextSetting _customSearchUri = new(
+        Namespaced(nameof(CustomSearchUri)),
+        Resources.plugin_custom_search_uri,
+        Resources.plugin_custom_search_uri,
+        string.Empty)
+    {
+        Placeholder = Resources.plugin_custom_search_uri_placeholder,
+    };
+
     private readonly ChoiceSetSetting _historyItemCount = new(
         Namespaced(HistoryItemCountLegacySettingsKey),
         Resources.plugin_history_item_count,
@@ -51,6 +60,8 @@ public class SettingsManager : JsonSettingsManager, ISettingsInterface
 
     public int HistoryItemCount => int.TryParse(_historyItemCount.Value, out var value) && value >= 0 ? value : 0;
 
+    public string CustomSearchUri => _customSearchUri.Value ?? string.Empty;
+
     public IReadOnlyList<HistoryItem> HistoryItems => _history.HistoryItems;
 
     public SettingsManager()
@@ -59,6 +70,7 @@ public class SettingsManager : JsonSettingsManager, ISettingsInterface
 
         Settings.Add(_globalIfURI);
         Settings.Add(_historyItemCount);
+        Settings.Add(_customSearchUri);
 
         LoadSettings();
 
diff --git a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.Designer.cs b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.Designer.cs
index 090b54375d..9db0a40cac 100644
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.Designer.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.Designer.cs
@@ -159,6 +159,24 @@ namespace Microsoft.CmdPal.Ext.WebSearch.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Custom search engine URL.
+        /// </summary>
+        public static string plugin_custom_search_uri {
+            get {
+                return ResourceManager.GetString("plugin_custom_search_uri", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Use {query} or %s as the search query placeholder; e.g. https://www.bing.com/search?q={query}.
+        /// </summary>
+        public static string plugin_custom_search_uri_placeholder {
+            get {
+                return ResourceManager.GetString("plugin_custom_search_uri_placeholder", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Searches the web with your default search engine.
         /// </summary>
diff --git a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.resx b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.resx
index 032f89e7a5..c7f424c6f9 100644
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.resx
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.resx
@@ -187,4 +187,10 @@
   <data name="default_browser" xml:space="preserve">
     <value>default browser</value>
   </data>
+  <data name="plugin_custom_search_uri" xml:space="preserve">
+    <value>Custom search engine URL</value>
+  </data>
+  <data name="plugin_custom_search_uri_placeholder" xml:space="preserve">
+    <value>Use {query} or %s as the search query placeholder; e.g. https://www.bing.com/search?q={query}</value>
+  </data>
 </root>
\ No newline at end of file